PT - JOURNAL ARTICLE AU - Thomas R Fanshawe AU - Seena Fazel TI - The ‘double whammy’ of low prevalence in clinical risk prediction AID - 10.1136/bmjebm-2021-111683 DP - 2021 Aug 13 TA - BMJ Evidence-Based Medicine PG - bmjebm-2021-111683 4099 - http://ebm.bmj.com/content/early/2021/08/12/bmjebm-2021-111683.short 4100 - http://ebm.bmj.com/content/early/2021/08/12/bmjebm-2021-111683.full