Question 2906
{"accessible":false,"alternatives":[{"id":14166,"text":"0.11"},{"id":14167,"text":"0.9"},{"id":14168,"text":"1.1"},{"id":14169,"text":"9"}],"archived":false,"correctAlternativeId":14169,"explanation":"\u003cp\u003eThe formula for a positive likelihood ratio (LR+) is sensitivity / (1-specificity), therefore LR+ = 0.9 / (1-0.9) = 0.9 / 0.1 = 9\u003c/p\u003e","id":2906,"imageUrl":null,"imageAttribution":null,"imageAttributionCaseInfo":null,"firstQuestionPath":"/questions/2919","nextQuestionPath":"/articles/likelihood-ratios/questions/2905","relatedArticles":[],"alsoUsedIn":[{"id":1913,"kind":"Course","title":"Papa \u0026 Papa Bear's Medical Statistics Short Course - page 1913","link":"https://radiopaedia.org/courses/medical-statistics-short-course/pages/1913"}],"stem":"\u003cp\u003eA diagnostic test has a sensitivity of 90% and a specificity of 90%. What is the positive likelihood ratio?\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/2906"}],"attemptsPercentages":[{"alternativeId":"14167","percentage":25},{"alternativeId":"14169","percentage":75},{"alternativeId":"14166","percentage":0},{"alternativeId":"14168","percentage":0}],"promptToLogin":false,"questionManager":false,"articleId":"likelihood-ratios"}