Table 2.

Summary statistics for asbestos exposure and incidence or mortality from ovarian cancer

Number of studiesNumber of casesFixed-effects size (95% CI)Random-effects size (95% CI)Heterogeneity, χ2Heterogeneity, degrees of freedomHeterogeneity, P
All studies combined165,2401.75 (1.45–2.10)1.80 (1.45–2.24)17.91150.268
Cohort studies only145,1651.75 (1.45–2.12)1.83 (1.44–2.33)17.61130.173
Case–control studies only2751.69 (0.76–3.73)1.69 (0.76–3.73)0.2910.593
All studies that reviewed ovarian pathology75,1861.54 (1.22–1.95)1.54 (1.22–1.95)5.7260.455
Cohort studies that reviewed ovarian pathology55,1021.53 (1.20–1.95)1.59 (1.17–2.15)5.3840.251
Studies that examined cancer incidence45,1581.29 (0.97–1.73)1.29 (0.97–1.73)1.0830.781