{"id":7450,"date":"2025-05-07T18:49:38","date_gmt":"2025-05-07T16:49:38","guid":{"rendered":"https:\/\/family-medicine.org\/nnt\/"},"modified":"2025-05-13T16:22:20","modified_gmt":"2025-05-13T14:22:20","slug":"nnt","status":"publish","type":"post","link":"https:\/\/family-medicine.org\/de\/nnt\/","title":{"rendered":"Was bedeutet &#8222;NNT&#8220; und warum ist das relevant?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"7450\" class=\"elementor elementor-7450 elementor-7435\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f405a0d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f405a0d\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a57b5b0\" data-id=\"a57b5b0\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ef1c869 elementor-widget elementor-widget-text-editor\" data-id=\"ef1c869\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Wie vielleicht schon aufgefallen ist, verwende ich h\u00e4ufig die \u201eNumber Needed to Treat\u201c (NNT), um Studienergebnisse zu kommunizieren. Ich versuche zwar evidenzbasierte und leicht verst\u00e4ndliche Artikel zu schreiben, glaube aber, dass NNT ein Konzept ist, das jeder Hausarzt kennen sollte.<\/p><ul><li><strong><em>Was ist die NNT?<\/em><\/strong> Es ist die Anzahl an Patienten, die man behandeln muss, um ein schlechtes Ergebnis zu verhindern.<\/li><li><strong><em>Wie berechnet man sie?<\/em><\/strong> 1 geteilt durch die \u201eabsolute Risikoreduktion\u201c (= das Risiko in der Kontrollgruppe minus das Risiko in der Interventionsgruppe).<\/li><\/ul><p>F\u00fcr weitere Erkl\u00e4rungen siehe <a href=\"https:\/\/www.cebm.ox.ac.uk\/resources\/ebm-tools\/number-needed-to-treat-nnt\">University of Oxford<\/a> oder einfach <a href=\"https:\/\/de.wikipedia.org\/wiki\/Anzahl_der_notwendigen_Behandlungen\">Wikipedia<\/a>. Alternativ kannst du dir dieses richtig gute und leicht verst\u00e4ndliche <strong><a href=\"https:\/\/www.youtube.com\/watch?v=HbaIEXZoz9E\">9-min-Video<\/a><\/strong> von Dr. Roger Seheult von <a href=\"https:\/\/www.youtube.com\/@Medcram\">MedCram<\/a> ansehen.<\/p><p>Ein bisschen Kontext: Die NNT wurde erstmals <a href=\"https:\/\/www.nejm.org\/doi\/10.1056\/NEJM198806303182605\"><strong>1988<\/strong><\/a><strong> im NEJM<\/strong> als n\u00fctzliches Ma\u00df zur Kommunikation und Priorisierung medizinischer Behandlungen eingef\u00fchrt. Eine Analyse von <a href=\"https:\/\/jamanetwork.com\/journals\/jamainternalmedicine\/fullarticle\/2772935\">2020<\/a> \u00fcber 875 klinische Studien zeigte jedoch, dass <strong>nur 9%<\/strong> eine NNT berichteten.<\/p><h3>Wichtige Punkte zur NNT<\/h3><ul><li><strong>Zeitliche Variation:<\/strong> Die NNT kann erheblich variieren, wenn sie sich auf verschiedene Zeitr\u00e4ume bezieht (z.B. auf 1 Jahr vs. 10 Jahre). Ein k\u00fcrzerer Zeitraum f\u00fchrt meist zu einer h\u00f6heren NNT und umgekehrt.<\/li><li><strong>Basisrisiko:<\/strong> Die NNT h\u00e4ngt vom durchschnittlichen Grundrisiko der Studienteilnehmer ab, das sich bei realen Patienten stark unterscheiden kann. Ein niedrigeres Grundrisiko f\u00fchrt meist zu einer h\u00f6heren NNT und umgekehrt.<\/li><li><strong>Vergleichsgruppe:<\/strong> Die NNT wird von der verwendeten Vergleichsgruppe beeinflusst, wie einem Placebo oder einem anderen Medikament, was ihre Gr\u00f6\u00dfe stark beeinflussen kann.<\/li><li><strong>Konfidenzintervall:<\/strong> Die NNT hat auch ein Konfidenzintervall (z.B. NNT=10, 95% CI 5 bis 15), das jedoch oft nicht berichtet wird.<\/li><li><strong>Verwandte Konzepte:<\/strong> Number Needed to Harm (NNH) und Number Needed to Screen (NNS) sind \u00e4hnliche Konzepte f\u00fcr Nebenwirkungen und Screenings.<\/li><\/ul><h3>Meine Gedanken<\/h3><p>Die NNT ist ein wertvolles Werkzeug zur realistischen Bewertung von Behandlungseffekten, hat aber auch ihre Limitierungen.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Ein kurzer Artikel um die Number Needed to Treat (NNT) besser zu verstehen. Wie wird sie berechnet, warum ist sie f\u00fcr klinische Entscheidungen wichtig und welche Faktoren beeinflussen ihre Interpretation.<\/p>\n","protected":false},"author":93452803,"featured_media":7439,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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