PT - JOURNAL ARTICLE AU - Kathryn S Taylor AU - Kamal R Mahtani AU - Jeffrey K Aronson TI - Dealing with categorical risk data when extracting data for meta-analysis AID - 10.1136/bmjebm-2020-111649 DP - 2021 Apr 01 TA - BMJ Evidence-Based Medicine PG - 43--45 VI - 26 IP - 2 4099 - http://ebm.bmj.com/content/26/2/43.short 4100 - http://ebm.bmj.com/content/26/2/43.full SO - BMJ EBM2021 Apr 01; 26