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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">The systematic use of bibliometric indicators in the evaluation of research has given rise to the publication of in-depth studies on the advantages and disadvantages of each of these indicators&#46; The most widely used indicator&#44; the impact factor &#40;IF&#41;&#44;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> has been frequently criticized for its many limitations&#44; such as inclusion of citations of articles that are not included in the denominator of the calculation formula &#40;editorials&#44; letters&#44; etc&#46;&#41;&#44; an analysis period of only 2 years&#44; the inclusion of self-citations and the lack of evaluation of the quality of the origin of the citation or the risk of manipulation&#44; among others&#46;<a class="elsevierStyleCrossRefs" href="#bib0010"><span class="elsevierStyleSup">2&#8211;5</span></a></p><p id="par0010" class="elsevierStylePara elsevierViewall">A recently proposed new parameter&#44; the <span class="elsevierStyleItalic">SCImago Journal Rank</span> &#40;SJR&#41; index&#44; has been readily accepted and adopted&#46; It uses for its calculations citations from the Scopus database &#40;Elsevier&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> The SJR corrects many of the factors criticized in the IF&#44;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> since it includes more journals&#44; covers a longer period for including citations &#40;3<span class="elsevierStyleHsp" style=""></span>years&#41;&#44; and limits self-citations&#46; More importantly&#44; it weighs citations according to the importance of the journal where they were published&#44; using an algorithm similar to that of <span class="elsevierStyleItalic">Google PageRank</span><span class="elsevierStyleSup">&#174;</span>&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">To compare the results of both indexes &#40;IF and SJR&#41; in specialized respiratory system journals&#44; the values for 2012 were analyzed&#46; The journals are listed under the category <span class="elsevierStyleItalic">Respiratory System</span> of the <span class="elsevierStyleItalic">Journal Citation Reports</span><span class="elsevierStyleSup">&#174;</span> for the IF calculation and under the category <span class="elsevierStyleItalic">Pulmonary and Respiratory Medicine</span> of <span class="elsevierStyleItalic">SCImago</span> for the calculation of the new index&#46; These indexes were obtained from the official websites of the <span class="elsevierStyleItalic">Web of Science</span> &#40;at <a id="intr0005" class="elsevierStyleInterRef" href="http://www.accesowok.fecyt.es/">http&#58;&#47;&#47;www&#46;accesowok&#46;fecyt&#46;es&#47;</a>&#41;&#44; which includes the <span class="elsevierStyleItalic">Journal Citation Reports</span><span class="elsevierStyleSup">&#174;</span>&#44; and the <span class="elsevierStyleItalic">SCImago Journal &#38; Country Rank</span> &#40;<a id="intr0010" class="elsevierStyleInterRef" href="http://www.scimagojr.com/">http&#58;&#47;&#47;www&#46;scimagojr&#46;com&#47;</a>&#41;&#46; The latter is available on free access&#46; The classification order of the journals for each index was reviewed and the possible correlation between both indicators was evaluated using Spearman&#39;s test&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">The <span class="elsevierStyleItalic">Journal Citation Reports</span><span class="elsevierStyleSup">&#174;</span> includes 50 specialized respiratory system journals and the <span class="elsevierStyleItalic">SCImago Journal &#38; Country Rank</span> includes 98&#46; In general&#44; it was found that the top journals occupy similar positions in both classifications&#44; as seen in <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>&#44; which lists the top 20 journals according to the SJR with their equivalent position in the IF&#46; There was a very high correlation between the indicators for journals in this category &#40;<span class="elsevierStyleItalic">r</span>&#61;0&#46;94&#59; <span class="elsevierStyleItalic">P</span>&#60;&#46;001&#41;&#46;</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia><p id="par0025" class="elsevierStylePara elsevierViewall">Our data reveal that use of the SJR index does not significantly change the classification of respiratory system journals compared to the IF&#46; Moreover&#44; its calculation methods address the main limitations attributed to IF&#44; including nuances&#44; such as citation weighting&#44; that may improve the characterization of the journals&#46; All these aspects&#44; added to the fact that <span class="elsevierStyleItalic">SCImago Journal &#38; Country Rank</span> is free access&#44; lead us to believe that SJR may be at present be considered not only as a complement but also as an alternative to the IF&#46;</p></span>"
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