PT - JOURNAL ARTICLE AU - Lee, Jung-Yun AU - Jeon, InPyo AU - Kim, Jae Weon AU - Song, Yong-Sang AU - Yoon, Jae-Moon AU - Park, Sang Min TI - Diabetes Mellitus and Ovarian Cancer Risk: A Systematic Review and Meta-Analysis of Observational Studies AID - 10.1097/IGC.0b013e31828189b2 DP - 2013 Mar 01 TA - International Journal of Gynecologic Cancer PG - 402--412 VI - 23 IP - 3 4099 - http://ijgc.bmj.com/content/23/3/402.short 4100 - http://ijgc.bmj.com/content/23/3/402.full SO - Int J Gynecol Cancer2013 Mar 01; 23 AB - Objective The objective of this study was to evaluate the epidemiologic association between diabetes and risk of ovarian cancer.Methods We searched PubMed, EMBASE, and The Cochrane Library for observational studies on the association between diabetes and ovarian cancer. Cohort studies that reported relative risks (RRs) and case-control studies that showed odds ratios were included in the analysis. Summary RRs with 95% confidence intervals (CIs) were calculated with a random-effects model.Results A total of 19 studies from 18 articles (7 case-control studies and 11 cohort studies) met the inclusion criteria. Combining data from all studies, diabetes was associated with an increased risk of ovarian cancer, compared with no diabetes (summary RR of ovarian cancer incidence, 1.17; 95% CI, 1.02–1.33). In cohort and nested case-control studies, patients with diabetes had statistically significant increased risk of ovarian cancer (RR, 1.16; 95% CI, 1.01–1.33), without significant heterogeneity (I2 = 27; P = 0.172). Among studies that control for age, body mass index, smoking, and alcohol, a prominent association between diabetes and ovarian cancer was found (RR, 1.55; 95% CI, 1.11–2.19).Conclusions This study suggests that women with diabetes have a moderately increased risk of ovarian cancer.