Variable Category Case, Control, COR (95% CI) AOR (95% CI) Age ≤30 61 (65.6%) 109 (58%) 1.38 (0.824, 2.316) 0.85 (0.332, 2.188) >30 32 (34.4%) 79 (42%) 1 1 Family history of infertility Yes 26 (28%) 20 (10.6%) 3.26 (1.705, 6.232) 1.88 (0.577, 6.134) No 67 (72%) 168 (89.4%) 1 1 Type of pregnancy Wanted 20 (58.8%) 131 (69.7%) 1 1 Unwanted 14 (41.2%) 57 (30.3%) 1.61 (0.760, 3.407) 0.72 (0.235, 2.195) Outcome of pregnancy Normal 11 (32.4%) 122 (64.9%) 1 1 Abortion 16 (47.1%) 45 (23.9%) 3.94 (1.702, 9.138) 2.22 (0.814, 6.066) Stillbirth 7 (20.6%) 21 (11.2%) 3.7 (1.288, 10.615) 2.89 (0.747, 11.14) Age of first pregnancy <21 26 (76.5%) 93 (49.5%) 3.32 (1.430, 7.709) 2.89 (1.105, 7.564) ≥21 8 (23.5%) 95 (50.5%) 1 1 Dysmenorrhea Yes 48 (51.6%) 75 (39.9%) 1.61 (0.974, 2.651) 0.52 (0.200, 1.368) No 45 (48.4%) 113 (60.1%) 1 1 Menstruation flow in days ≤3 13 (14%) 54 (28.7%) 1 1 >3 80 (86%) 134 (71.3%) 2.48 (1.274, 4.826) 4.17 (1.077, 16.178) Age at the first menstruation <14 30 (32.3%) 113 (60.1%) 1 1 ≥14 63 (67.7%) 75 (39.9%) 3.16 (1.874, 5.342) 3.19 (1.278, 7.975) Uterine abnormality Yes 40 (43%) 63 (33.5%) 1.5 (0.899, 2.494) 0.98 (0.363, 2.624) No 53 (57%) 125 (66.5%) 1 1 BMI <25 64 (68.8%) 108 (57.4%) 1 1 ≥25 29 (31.2%) 80 (42.6%) 0.61 (0.362, 1.035) 0.66 (0.246, 1.746) Multiple sexual partners Yes 37 (39.8%) 35 (18.6%) 2.89 (1.659, 5.028) 5.34 (2.124, 13.397) No 56 (60.2%) 153 (81.4%) 1 1 History of STI Yes 28 (75.7%) 30 (85.7%) 4.53 (2.576, 7.964) 2.79 (1.088, 7.159) No 43 (46.2%) 30 (16%) 1 1
