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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">With this special paper we put an end to the series on methodology in Intensive Care Medicine that we initiated back in April 2018<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">1</span></a> and that included 8 papers that we hope stimulated your interest on statistical analysis when preparing articles to be published in our scientific journal&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">The series included 4 papers on general issues&#46; The first one was about the importance of methodology in the clinical research of the critically ill patient&#44;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">2</span></a> including a description of the difficulties that are inherent to this type of patients when it comes to clinical research&#44; and the disappointments that follow therapeutic failures &#8211; sometimes triggered by implementing wrong designs&#46; Another paper exposed some of the key elements when it comes to interpreting statistical results&#44;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">3</span></a> such as facilitating the understanding of common concepts in methodology that are not always fully understood by healthcare providers or researchers&#46; The third review discussed ethics in clinical research&#44;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">4</span></a> and clarified fundamental aspects of bioethical issues that need to be taken into account when conducting studies&#44; which&#44; by the way&#44; today is a prerequisite of any clinical research&#46; The fourth paper discussed common errors in the use of statistics<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">5</span></a> warning readers on the slips or even frauds that are sometimes found in researches published and that may affect the way these clinical researches are implemented in the routine clinical practice&#46; All papers discussed all these issues from the perspective of critically ill patients&#44; their peculiarities and determinant factors&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">On the other hand&#44; we also discussed new statistical methodology tools&#46; A review of new techniques in the management of causality in observational studies<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">6</span></a> presented us with different ways of analysis beyond conventional multivariate logistic regression analyses&#46; Another review on alternative statistical methods<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">7</span></a> showed us options different from the usual techniques to be able to explore the truth behind the data&#46; We also presented an introduction to this study by using big data&#44;<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">8</span></a> the tool that will probably change our way to analyze health biological reality forever and&#44; particularly&#44; the way we analyze the critically ill patients&#8217; biological reality&#44; in whom the abundance and complexity of data open a huge field for the implementation of these techniques&#46; Lastly&#44; we included a great article on meta-analysis&#44;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">9</span></a> one of the main sources of evidence-based knowledge not only for our clinical practice but also for the detection of uncertainty to guide future researches&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">In the article that introduced the entire series&#44; we analyzed the density of using statistical tools in the original articles we publish regularly on <span class="elsevierStyleItalic">Medicina Intensiva</span>&#44; and compared it to that of the other two major journals in intensive care&#44; <span class="elsevierStyleItalic">Intensive Care Medicine</span> and <span class="elsevierStyleItalic">Critical Care Medicine&#46;</span><a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">1</span></a> We saw significant differences in the presence of multicenter studies&#44; in the amount of tests used by the original paper and&#44; especially&#44; in the use of analysis of greater statistical complexity&#46; Probably&#44; higher quality during the research process facilitates the incorporation of more complex tests and even a larger amount tests which&#44; in turn&#44; facilitates publishing in higher impact journals&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">In order to improve all these indicators&#44; the editorial committee intends to follow two parallel lines&#46;<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">10</span></a> On the one hand&#44; the intend to increase our impact factor by encouraging citing our journal by improving its accessibility and circulation &#40;changes in the web&#44; app&#41;&#44; by having excellent researchers publishing with us&#44; by facilitating publication in English&#44; and by promoting the responsibility of Spanish-speaking intensivists in the publication of our journal&#46; On the other hand&#44; we understand that the editorial process needs to be demanding and constructive in order to improve the scientific quality of studies&#46; The role of the reviewing team is essential here&#44; will bring quality and complexity to the statistical analyses during the entire peer-review process&#44; and give more consistency and credibility to the studies that we publish&#46; We strongly believe this will bring more chances of external citations to our journal&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">In the follow-up we conducted on the methodological quality of the original papers published in our journal we can see a certain evolution during the last few years&#46; <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a> shows a new analysis that draws a comparison between the originals published in 2016 and 2017 and the originals published back in 2018 plus those published online &#40;as of November 2018&#41;&#46; We have to say that we basically publish observational studies&#44; and have a low rate of multicenter studies&#44; and a scarce estimate of sample sizes &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46; We should also mention here that in this short period of time we saw a clear increase in the amount of unusual tests that were incorporated into our papers to the point that they appeared in almost 20&#37; of all original papers&#46; Also&#44; during the last few years we have seen a significant increase in the percentage of studies that incorporate more than 3 statistical analyses &#40;chi-square test for linear trend&#59; <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>&#46;042&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46; On the other hand&#44; the number of systematic reviews and meta-analyses has gone up from 0 to 5 during the second period examined&#44; and we have published two original papers based on big data&#46; All this suggests a greater and better methodological elaboration in the original papers published&#46; We understand that a greater statistical complexity does not guarantee the interest of readers on clinical research&#44; but it is a prerequisite for its development as other scientific journals have proven in the past&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">11</span></a></p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">In sum&#44; we hope that this series on methodology has pleased all our readers&#46; We hope it was useful to understand the different aspects of statistical design and interpretation and to present complex issues that may be difficult but essential for the future development of clinical research&#46; And if we did not deliver&#44; at least we take pride in the fact that it stimulated researchers to incorporate new tools to the arsenal of petitions to statisticians&#46; If this helps increase the quality and the possibility of citations of the studies already published&#44; then we can happily say mission accomplished&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conflicts of interest</span><p id="par0040" class="elsevierStylePara elsevierViewall">The author declares no conflicts of interest whatsoever&#46;</p></span></span>"
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          "titulo" => "Keywords"
          "identificador" => "xpalclavsec1087401"
          "palabras" => array:5 [
            0 => "Critically ill patient"
            1 => "Methodology"
            2 => "Statistical analysis"
            3 => "Statistical interpretation"
            4 => "Methodological errors"
          ]
        ]
      ]
      "es" => array:1 [
        0 => array:4 [
          "clase" => "keyword"
          "titulo" => "Palabras clave"
          "identificador" => "xpalclavsec1087402"
          "palabras" => array:5 [
            0 => "Paciente cr&#237;tico"
            1 => "Metodolog&#237;a"
            2 => "An&#225;lisis estad&#237;sticos"
            3 => "Interpretaci&#243;n estad&#237;stica"
            4 => "Errores metodol&#243;gicos"
          ]
        ]
      ]
    ]
    "tieneResumen" => true
    "resumen" => array:2 [
      "en" => array:2 [
        "titulo" => "Abstract"
        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">The series of updates on methodology for research in critically ill patients has addressed the difficulties caused by the characteristics of patients of this kind&#44; bioethics&#44; the interpretation of results&#44; and methodological error&#46; New statistical methods for causality research&#44; meta-analysis and big data analysis have also been described&#46; The last update refers to the horizon for new research in the field of critical care&#46; We close the series with the hope of having provided a global vision of the statistical methods oriented toward the future&#44; with the aim of promoting statistical culture&#46; In parallel&#44; we have analyzed the evolution in complexity of the methodological analysis in the journal&#46;</p></span>"
      ]
      "es" => array:2 [
        "titulo" => "Resumen"
        "resumen" => "<span id="abst0010" class="elsevierStyleSection elsevierViewall"><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">La serie de actualizaci&#243;n en metodolog&#237;a para la investigaci&#243;n en el enfermo cr&#237;tico ha tratado las dificultades inherentes a las caracter&#237;sticas de este tipo de enfermo&#44; la bio&#233;tica&#44; la interpretaci&#243;n de resultados y los errores metodol&#243;gicos&#46; Adem&#225;s&#44; se han mostrado nuevas t&#233;cnicas estad&#237;sticas para la investigaci&#243;n de la causalidad&#44; se ha tratado el metaan&#225;lisis y se ha profundizado en el an&#225;lisis de <span class="elsevierStyleItalic">big data</span>&#46; Este &#250;ltimo abordaje es hacia donde van las nuevas investigaciones en el campo del enfermo cr&#237;tico&#46; La serie que cerramos ha pretendido dar una visi&#243;n de conjunto de los m&#233;todos estad&#237;sticos orientada hacia el futuro&#44; con el fin de mejorar la cultura estad&#237;stica&#46; De manera paralela&#44; hemos valorado la evoluci&#243;n de la complejidad de los an&#225;lisis metodol&#243;gicos en la revista&#46;</p></span>"
      ]
    ]
    "NotaPie" => array:1 [
      0 => array:2 [
        "etiqueta" => "&#9734;"
        "nota" => "<p class="elsevierStyleNotepara" id="npar0015">Please cite this article as&#58; Garc&#237;a Garmendia JL&#46; Evaluaci&#243;n y cierre de la serie sobre metodolog&#237;a en Medicina Intensiva&#46; Med Intensiva&#46; 2019&#59;43&#58;121&#8211;123&#46;</p>"
      ]
    ]
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      0 => array:7 [
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        "etiqueta" => "Figure 1"
        "tipo" => "MULTIMEDIAFIGURA"
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        "mostrarDisplay" => false
        "figura" => array:1 [
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        "descripcion" => array:1 [
          "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Evolution of the percentage of original articles published in <span class="elsevierStyleItalic">Medicina Intensiva</span> including more than 3 statistical tests in their methodology since 2016&#46;</p> <p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Chi-square test for linear trend&#44; <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>&#46;042&#46;</p>"
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                  <table border="0" frame="\n
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                  \t\t\t\t</th><th class="td" title="table-head  " align="left" valign="top" scope="col">2016&#8211;2017&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</th></tr><tr title="table-row"><th class="td" title="table-head  " align="" valign="top" scope="col" style="border-bottom: 2px solid black">&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">17 &#40;30&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleItalic">Spanish authors&#44; n &#40;&#37;&#41;</span>&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">46 &#40;81&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleItalic">Analysis of mortality rate&#44; n &#40;&#37;&#41;</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">27 &#40;41&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">23 &#40;40&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleItalic">Estimated sample size&#44; n &#40;&#37;&#41;</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">4 &#40;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleItalic">Type of study&#58; observational&#44; n &#40;&#37;&#41;</span>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">46 &#40;71&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">51 &#40;88&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td" title="table-entry  " colspan="3" align="left" valign="top"><span class="elsevierStyleItalic">Statistical analyses&#44; n &#40;&#37;&#41;</span></td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Comparison of percentages&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">52 &#40;80&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">43 &#40;75&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Comparison of quantitative variables&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">55 &#40;85&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">44 &#40;77&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Comparison of repeated measurements&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">7 &#40;11&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">7 &#40;12&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Kaplan&#8211;Meier&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">11 &#40;17&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;11&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Simple regression model&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">4 &#40;7&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Multiple linear regression model&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">3 &#40;5&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Logistics regression model&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">26 &#40;40&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">21 &#40;37&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Cox regression model&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">7 &#40;11&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">6 &#40;11&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Propensity score&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>ROC curves&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">12 &#40;19&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">15 &#40;26&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Correlation analysis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">10 &#40;18&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Concordance analysis&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;8&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">8 &#40;14&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Other tests<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">1 &#40;2&#41;&nbsp;\t\t\t\t\t\t\n
                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">11 &#40;19&#41;<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">&#42;</span></a>&nbsp;\t\t\t\t\t\t\n
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              "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Chaid test&#44; binomial analysis&#44; Least Absolute Shrinkage and Selection Operator&#44; Stochastic Gradient Boosting&#44; matrix analysis&#44; time series&#44; mixed linear models&#46;</p>"
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              "etiqueta" => "&#42;"
              "nota" => "<p class="elsevierStyleNotepara" id="npar0010"><span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>&#46;001&#46;</p>"
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        ]
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          "en" => "<p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Comparative analysis of the statistical methodology applied to original papers published in <span class="elsevierStyleItalic">Medicina Intensiva</span> in two consecutive periods of time&#46;</p>"
        ]
      ]
    ]
    "bibliografia" => array:2 [
      "titulo" => "References"
      "seccion" => array:1 [
        0 => array:2 [
          "identificador" => "bibs0015"
          "bibliografiaReferencia" => array:11 [
            0 => array:3 [
              "identificador" => "bib0060"
              "etiqueta" => "1"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Actualizaci&#243;n en metodolog&#237;a en Medicina Intensiva"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:1 [
                            0 => "J&#46;L&#46; Garc&#237;a Garmendia"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.medin.2017.12.007"
                      "Revista" => array:6 [
                        "tituloSerie" => "Med Intensiva"
                        "fecha" => "2018"
                        "volumen" => "42"
                        "paginaInicial" => "180"
                        "paginaFinal" => "183"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/29426703"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            1 => array:3 [
              "identificador" => "bib0065"
              "etiqueta" => "2"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Investigaci&#243;n en el enfermo cr&#237;tico&#46; Dificultades y perspectivas"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:1 [
                            0 => "J&#46; Latour-P&#233;rez"
                          ]
                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.medin.2017.07.008"
                      "Revista" => array:6 [
                        "tituloSerie" => "Med Intensiva"
                        "fecha" => "2018"
                        "volumen" => "42"
                        "paginaInicial" => "184"
                        "paginaFinal" => "195"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/28943024"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            2 => array:3 [
              "identificador" => "bib0070"
              "etiqueta" => "3"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "Interpretaci&#243;n de resultados estad&#237;sticos"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:2 [
                            0 => "J&#46;L&#46; Garc&#237;a Garmendia"
                            1 => "F&#46; Maroto Monserrat"
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                        ]
                      ]
                    ]
                  ]
                  "host" => array:1 [
                    0 => array:2 [
                      "doi" => "10.1016/j.medin.2017.12.013"
                      "Revista" => array:6 [
                        "tituloSerie" => "Med Intensiva"
                        "fecha" => "2018"
                        "volumen" => "42"
                        "paginaInicial" => "370"
                        "paginaFinal" => "379"
                        "link" => array:1 [
                          0 => array:2 [
                            "url" => "https://www.ncbi.nlm.nih.gov/pubmed/29477785"
                            "web" => "Medline"
                          ]
                        ]
                      ]
                    ]
                  ]
                ]
              ]
            ]
            3 => array:3 [
              "identificador" => "bib0075"
              "etiqueta" => "4"
              "referencia" => array:1 [
                0 => array:2 [
                  "contribucion" => array:1 [
                    0 => array:2 [
                      "titulo" => "&#201;tica de la investigaci&#243;n en el paciente cr&#237;tico"
                      "autores" => array:1 [
                        0 => array:2 [
                          "etal" => false
                          "autores" => array:1 [
                            0 => "A&#46; Estella"
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Special article
Evaluation and closure of the series on methodology in Intensive Care Medicine
Evaluación y cierre de la serie sobre metodología en Medicina Intensiva
J.L. García Garmendia
Unidad de Cuidados Intensivos, Servicio de Cuidados Críticos y Urgencias, Hospital San Juan de Dios del Aljarafe, Bormujos, Sevilla, Spain
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    "titulo" => "Evaluation and closure of the series on methodology in Intensive Care Medicine"
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          "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Evolution of the percentage of original articles published in <span class="elsevierStyleItalic">Medicina Intensiva</span> including more than 3 statistical tests in their methodology since 2016&#46;</p> <p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">Chi-square test for linear trend&#44; <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>&#46;042&#46;</p>"
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">With this special paper we put an end to the series on methodology in Intensive Care Medicine that we initiated back in April 2018<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">1</span></a> and that included 8 papers that we hope stimulated your interest on statistical analysis when preparing articles to be published in our scientific journal&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">The series included 4 papers on general issues&#46; The first one was about the importance of methodology in the clinical research of the critically ill patient&#44;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">2</span></a> including a description of the difficulties that are inherent to this type of patients when it comes to clinical research&#44; and the disappointments that follow therapeutic failures &#8211; sometimes triggered by implementing wrong designs&#46; Another paper exposed some of the key elements when it comes to interpreting statistical results&#44;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">3</span></a> such as facilitating the understanding of common concepts in methodology that are not always fully understood by healthcare providers or researchers&#46; The third review discussed ethics in clinical research&#44;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">4</span></a> and clarified fundamental aspects of bioethical issues that need to be taken into account when conducting studies&#44; which&#44; by the way&#44; today is a prerequisite of any clinical research&#46; The fourth paper discussed common errors in the use of statistics<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">5</span></a> warning readers on the slips or even frauds that are sometimes found in researches published and that may affect the way these clinical researches are implemented in the routine clinical practice&#46; All papers discussed all these issues from the perspective of critically ill patients&#44; their peculiarities and determinant factors&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">On the other hand&#44; we also discussed new statistical methodology tools&#46; A review of new techniques in the management of causality in observational studies<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">6</span></a> presented us with different ways of analysis beyond conventional multivariate logistic regression analyses&#46; Another review on alternative statistical methods<a class="elsevierStyleCrossRef" href="#bib0090"><span class="elsevierStyleSup">7</span></a> showed us options different from the usual techniques to be able to explore the truth behind the data&#46; We also presented an introduction to this study by using big data&#44;<a class="elsevierStyleCrossRef" href="#bib0095"><span class="elsevierStyleSup">8</span></a> the tool that will probably change our way to analyze health biological reality forever and&#44; particularly&#44; the way we analyze the critically ill patients&#8217; biological reality&#44; in whom the abundance and complexity of data open a huge field for the implementation of these techniques&#46; Lastly&#44; we included a great article on meta-analysis&#44;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">9</span></a> one of the main sources of evidence-based knowledge not only for our clinical practice but also for the detection of uncertainty to guide future researches&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">In the article that introduced the entire series&#44; we analyzed the density of using statistical tools in the original articles we publish regularly on <span class="elsevierStyleItalic">Medicina Intensiva</span>&#44; and compared it to that of the other two major journals in intensive care&#44; <span class="elsevierStyleItalic">Intensive Care Medicine</span> and <span class="elsevierStyleItalic">Critical Care Medicine&#46;</span><a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">1</span></a> We saw significant differences in the presence of multicenter studies&#44; in the amount of tests used by the original paper and&#44; especially&#44; in the use of analysis of greater statistical complexity&#46; Probably&#44; higher quality during the research process facilitates the incorporation of more complex tests and even a larger amount tests which&#44; in turn&#44; facilitates publishing in higher impact journals&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">In order to improve all these indicators&#44; the editorial committee intends to follow two parallel lines&#46;<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">10</span></a> On the one hand&#44; the intend to increase our impact factor by encouraging citing our journal by improving its accessibility and circulation &#40;changes in the web&#44; app&#41;&#44; by having excellent researchers publishing with us&#44; by facilitating publication in English&#44; and by promoting the responsibility of Spanish-speaking intensivists in the publication of our journal&#46; On the other hand&#44; we understand that the editorial process needs to be demanding and constructive in order to improve the scientific quality of studies&#46; The role of the reviewing team is essential here&#44; will bring quality and complexity to the statistical analyses during the entire peer-review process&#44; and give more consistency and credibility to the studies that we publish&#46; We strongly believe this will bring more chances of external citations to our journal&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">In the follow-up we conducted on the methodological quality of the original papers published in our journal we can see a certain evolution during the last few years&#46; <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a> shows a new analysis that draws a comparison between the originals published in 2016 and 2017 and the originals published back in 2018 plus those published online &#40;as of November 2018&#41;&#46; We have to say that we basically publish observational studies&#44; and have a low rate of multicenter studies&#44; and a scarce estimate of sample sizes &#40;<a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#41;&#46; We should also mention here that in this short period of time we saw a clear increase in the amount of unusual tests that were incorporated into our papers to the point that they appeared in almost 20&#37; of all original papers&#46; Also&#44; during the last few years we have seen a significant increase in the percentage of studies that incorporate more than 3 statistical analyses &#40;chi-square test for linear trend&#59; <span class="elsevierStyleItalic">P</span><span class="elsevierStyleHsp" style=""></span>&#61;<span class="elsevierStyleHsp" style=""></span>&#46;042&#41; &#40;<a class="elsevierStyleCrossRef" href="#fig0005">Fig&#46; 1</a>&#41;&#46; On the other hand&#44; the number of systematic reviews and meta-analyses has gone up from 0 to 5 during the second period examined&#44; and we have published two original papers based on big data&#46; All this suggests a greater and better methodological elaboration in the original papers published&#46; We understand that a greater statistical complexity does not guarantee the interest of readers on clinical research&#44; but it is a prerequisite for its development as other scientific journals have proven in the past&#46;<a class="elsevierStyleCrossRef" href="#bib0110"><span class="elsevierStyleSup">11</span></a></p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><elsevierMultimedia ident="fig0005"></elsevierMultimedia><p id="par0035" class="elsevierStylePara elsevierViewall">In sum&#44; we hope that this series on methodology has pleased all our readers&#46; We hope it was useful to understand the different aspects of statistical design and interpretation and to present complex issues that may be difficult but essential for the future development of clinical research&#46; And if we did not deliver&#44; at least we take pride in the fact that it stimulated researchers to incorporate new tools to the arsenal of petitions to statisticians&#46; If this helps increase the quality and the possibility of citations of the studies already published&#44; then we can happily say mission accomplished&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Conflicts of interest</span><p id="par0040" class="elsevierStylePara elsevierViewall">The author declares no conflicts of interest whatsoever&#46;</p></span></span>"
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        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">The series of updates on methodology for research in critically ill patients has addressed the difficulties caused by the characteristics of patients of this kind&#44; bioethics&#44; the interpretation of results&#44; and methodological error&#46; New statistical methods for causality research&#44; meta-analysis and big data analysis have also been described&#46; The last update refers to the horizon for new research in the field of critical care&#46; We close the series with the hope of having provided a global vision of the statistical methods oriented toward the future&#44; with the aim of promoting statistical culture&#46; In parallel&#44; we have analyzed the evolution in complexity of the methodological analysis in the journal&#46;</p></span>"
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        "resumen" => "<span id="abst0010" class="elsevierStyleSection elsevierViewall"><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">La serie de actualizaci&#243;n en metodolog&#237;a para la investigaci&#243;n en el enfermo cr&#237;tico ha tratado las dificultades inherentes a las caracter&#237;sticas de este tipo de enfermo&#44; la bio&#233;tica&#44; la interpretaci&#243;n de resultados y los errores metodol&#243;gicos&#46; Adem&#225;s&#44; se han mostrado nuevas t&#233;cnicas estad&#237;sticas para la investigaci&#243;n de la causalidad&#44; se ha tratado el metaan&#225;lisis y se ha profundizado en el an&#225;lisis de <span class="elsevierStyleItalic">big data</span>&#46; Este &#250;ltimo abordaje es hacia donde van las nuevas investigaciones en el campo del enfermo cr&#237;tico&#46; La serie que cerramos ha pretendido dar una visi&#243;n de conjunto de los m&#233;todos estad&#237;sticos orientada hacia el futuro&#44; con el fin de mejorar la cultura estad&#237;stica&#46; De manera paralela&#44; hemos valorado la evoluci&#243;n de la complejidad de los an&#225;lisis metodol&#243;gicos en la revista&#46;</p></span>"
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        "nota" => "<p class="elsevierStyleNotepara" id="npar0015">Please cite this article as&#58; Garc&#237;a Garmendia JL&#46; Evaluaci&#243;n y cierre de la serie sobre metodolog&#237;a en Medicina Intensiva&#46; Med Intensiva&#46; 2019&#59;43&#58;121&#8211;123&#46;</p>"
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                  \t\t\t\t</td><td class="td" title="table-entry  " align="char" valign="top">5 &#40;8&#41;&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="table-entry ; entry_with_role_rowhead " align="left" valign="top"><span class="elsevierStyleHsp" style=""></span>Other tests<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a>&nbsp;\t\t\t\t\t\t\n
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                  \t\t\t\t</td></tr></tbody></table>
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Article information
ISSN: 21735727
Original language: English
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2020 December 33 15 48
2020 November 30 19 49
2020 October 29 23 52
2020 September 39 17 56
2020 August 12 16 28
2020 July 30 15 45
2020 June 40 12 52
2020 May 29 16 45
2020 April 23 17 40
2020 March 15 14 29
2020 February 32 26 58
2020 January 33 20 53
2019 December 28 22 50
2019 November 24 25 49
2019 October 29 17 46
2019 September 28 27 55
2019 August 48 18 66
2019 July 31 24 55
2019 June 28 11 39
2019 May 0 3 3
2019 April 0 6 6
2019 March 1 8 9
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¿Es usted profesional sanitario apto para prescribir o dispensar medicamentos?

Are you a health professional able to prescribe or dispense drugs?