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Table 3 Odds ratio of history of pelvic inflammatory disease on ovarian cancer

From: Risk of uterine, ovarian and breast cancer following pelvic inflammatory disease: a nationwide population-based retrospective cohort study

  Ovarian cancer group
(N = 55)
Control group
(N = 220)
OR = 1.40
(95 % CI 0.72–2.70)
P = 0.32
PID (%) 16 (29.09) 50 (22.73)
  1. OR odds ratio, CI confidence interval, PID pelvic inflammatory disease