Exposure | California EPA report4 | US Surgeon General's report5 | ||
N | RR (95% CI) | N | RR (95% CI) | |
All studies | 19 | 1.25 (1.08 to 1.44) | 21 | 1.20 (1.08 to 1.35) |
Premenopausal or women <50 (California EPA)/premenopausal (Surgeon General) | 14 | 1.68 (1.31 to 2.15) | 11 | 1.64 (1.25 to 2.14) |
Premenopausal: studies with lifetime exposure assessment | 5 | 2.20 (1.69 to 2.87) | 6 | 1.85 (1.19 to 2.87) |
Postmenopausal | 9 | * | 10 | 1.00 (0.88 to 1.12) |
↵* The California EPA did not report a summary risk estimate for postmenopausal women but concluded that risk estimates from the nine studies with data on postmenopausal women ‘cluster around a null association’.