PT  - JOURNAL ARTICLE
AU  - Perla J Marang-van de Mheen
AU  - Kaveh G Shojania
TI  - Simpson's paradox: how performance measurement can fail even with perfect risk adjustment
AID  - 10.1136/bmjqs-2014-003358
DP  - 2014 Sep 01
TA  - BMJ Quality & Safety
PG  - 701--705
VI  - 23
IP  - 9
4099  - http://qualitysafety.bmj.com/content/23/9/701.short
4100  - http://qualitysafety.bmj.com/content/23/9/701.full
SO  - BMJ Qual Saf2014 Sep 01; 23