{"id":130,"date":"2019-07-10T09:41:00","date_gmt":"2019-07-10T07:41:00","guid":{"rendered":"https:\/\/lpinstitute.dev.onpressidium.com\/news\/5d9b2486f8c90ab146afbd8a\/"},"modified":"2025-11-06T22:44:21","modified_gmt":"2025-11-06T21:44:21","slug":"nouvelle-publication-fragilite-des-meta-analyses","status":"publish","type":"post","link":"https:\/\/www.learningplanetinstitute.org\/fr\/news\/nouvelle-publication-fragilite-des-meta-analyses\/","title":{"rendered":"Nouvelle publication &#8211; Fragilit\u00e9 des m\u00e9ta-analyses"},"content":{"rendered":"<p>Une nouvelle \u00e9tude r\u00e9alis\u00e9e par Ignacio Atal, chercheur \u00e0 long terme au CRI Research, et des collaborateurs de l&#8217;H\u00f4pital H\u00f4tel-Dieu, vient de para\u00eetre dans le Journal of Clinical Epidemiology. Elle montre comment la signification statistique des m\u00e9ta-analyses peut \u00eatre fragile si l&#8217;on modifie des \u00e9v\u00e9nements uniques dans les \u00e9tudes incluses dans la m\u00e9ta-analyse.<\/p>\n<figure class=\"kg-card kg-image-card\"><img alt=\"\" decoding=\"async\" src=\"http:\/\/www.learningplanetinstitute.org\/wp-content\/uploads\/2025\/10\/0c96d621-e5e6-4636-b9d5-9e4e18c03339.png\" class=\"aligncenter full-size wp-image-1334\" alt loading=\"lazy\"><\/figure>\n<p>Le texte complet de l&#8217;\u00e9tude est disponible <a href=\"https:\/\/www.jclinepi.com\/article\/S0895-4356(18)30818-7\/fulltext\" rel=\"noopener nofollow\"><u>ici<\/u><\/a><\/p>\n<p>Les m\u00e9ta-analyses informent la pratique clinique en r\u00e9sumant l&#8217;effet d&#8217;un traitement \u00e0 partir des r\u00e9sultats de plusieurs essais. Cependant, la signification statistique d&#8217;une telle m\u00e9ta-analyse peut reposer sur les r\u00e9sultats de quelques patients seulement des essais sp\u00e9cifiques inclus. L&#8217;\u00e9tude \u00e9value cet effet en d\u00e9finissant l&#8217;indice de fragilit\u00e9 des m\u00e9ta-analyses, simplement un nombre minimal de changements dans le r\u00e9sultat du patient (par exemple, gu\u00e9ri ou non gu\u00e9ri) qui modifierait les conclusions de l&#8217;\u00e9tude. Parmi les 906 m\u00e9ta-analyses examin\u00e9es, l&#8217;indice de fragilit\u00e9 m\u00e9dian \u00e9tait de 12, mais pour environ 30 % des \u00e9tudes, il \u00e9tait de 5 ou moins. Cela indique une fragilit\u00e9 globale des r\u00e9sultats de la m\u00e9ta-analyse face \u00e0 de petits changements dans les \u00e9tudes sp\u00e9cifiques consid\u00e9r\u00e9es.<\/p>\n<p>Les auteurs ont \u00e9galement cr\u00e9\u00e9 un <a href=\"http:\/\/clinicalepidemio.fr\/fragility_ma\/\" rel=\"noopener nofollow\"><u>site web<\/u><\/a> qui permet \u00e0 d&#8217;autres scientifiques d&#8217;\u00e9valuer la fragilit\u00e9 de leurs m\u00e9ta-analyses.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A new study by Ignacio Atal, a Long-term Fellow at CRI Research.<\/p>\n","protected":false},"author":5,"featured_media":133,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[20],"tags":[21],"class_list":["post-130","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rd","tag-publication"],"acf":[],"meta_box":[],"_links":{"self":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/posts\/130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/comments?post=130"}],"version-history":[{"count":0,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/posts\/130\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/media\/133"}],"wp:attachment":[{"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/media?parent=130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/categories?post=130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learningplanetinstitute.org\/fr\/wp-json\/wp\/v2\/tags?post=130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}