Question 2918
{"accessible":false,"alternatives":[{"id":14214,"text":"risk ratio"},{"id":14215,"text":"rate ratio"},{"id":14216,"text":"odds ratio"},{"id":14217,"text":"likelihood ratio"}],"archived":false,"correctAlternativeId":14215,"explanation":"\u003cp\u003eThe rate ratio is the most appropriate measure of association for a cohort study or a clinical trial when follow up time is long because subjects will be lost to follow up. The contributions of all subjects, including those lost to follow up, are accounted for in terms of person years.\u003c/p\u003e","id":2918,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2919","nextQuestionPath":"/articles/likelihood-ratios/questions/2917","relatedArticles":[{"id":181085,"title":"Risk ratio vs rate ratio vs odds ratio","link":"/articles/risk-ratio-vs-rate-ratio-vs-odds-ratio?lang=us"},{"id":181626,"title":"Cohort studies vs case control studies","link":"/articles/cohort-studies-vs-case-control-studies?lang=us"}],"alsoUsedIn":[],"stem":"\u003cp\u003eWhat is the most appropriate measure of association for a cohort study where subjects are followed for 30 years?\u003c/p\u003e","menuLinks":[{"text":"Report problem with question","url":"https://docs.google.com/forms/d/e/1FAIpQLSfO3soWYhOjJ7yErSysyCe5V4A1CqW7WK3rDA7MtAkecMGqNw/viewform?entry.1624461248\u0026entry.553583435=https://radiopaedia.org/questions/2918"}],"attemptsPercentages":[{"alternativeId":"14217","percentage":50},{"alternativeId":"14215","percentage":50},{"alternativeId":"14214","percentage":0},{"alternativeId":"14216","percentage":0}],"promptToLogin":false,"questionManager":false,"articleId":"likelihood-ratios"}