Supplementary Table S1 shows characteristics among ovarian cancer cases, Supplementary Table S2 shows the association between duration of analgesic use and ovarian cancer risk, Supplementary Table S3 shows the association between frequency of analgesic use and ovarian cancer risk, Supplementary Table S4 shows the association between age at first use of analgesics and ovarian cancer risk, Supplementary Table S5 shows the associations between analgesic use and ovarian cancer risk stratified by oral contraceptive use and history of endometriosis