From: Association between ovarian endometriosis and malignancy in the peri-menopausal period: report of two cases and review of the literature
Case control/cohort study
Size cohort
Ovarian cancer
RR
95% CI
Briton et al. [23]
20,686
1.92
1.3–2.8
Ness et al. [22]
3,678 cases/5,268 controls
1.73
1.10–2.71
Melin et al. [25]
64,492
1.43
1.19–1.71
Kobayashi et al. [24]
6,398
8.95
4.12–15.3
