TY  - JOUR

T1  - Confounding and Simpson's paradox.

JO  - BMJ

PY  - 1994/12/03

AU  - Julious SA

AU  - Mullee MA

ED  - 

DO  - DOI: 10.1136/bmj.309.6967.1480

VL  - 309

IS  - 6967

SP  - 1480

EP  - 1481

Y2  - 2024/10/19

ER  -