Factors | OMA (n = 156) | DIE (n = 78) | OR (95% CI) | P |
---|---|---|---|---|
Mean age (years) | 31.17 ± 4.97 | 34.47 ± 4.54 | 4.32 [2.29;8.17] | < 0.001 |
BMI (kg/m2) | 0.354 | |||
  > = 18.5 to < 22 | 81 (51.9%) | 33 (42.3%) | ref | |
  < 18.5 | 28 (17.9%) | 13 (16.7%) | 1.14 [0.53;2.47] | |
  > =22 to < 25 | 34 (21.8%) | 21 (26.9%) | 1.52 [0.77;2.99] | |
  > =25 | 13 (8.3%) | 11 (14.1%) | 2.08 [0.85;5.10] | |
Educational level | 0.205 | |||
 University or business school | 100 (64.1%) | 45 (57.7%) | ref | |
 Primary school + High school | 24 (15.4%) | 21 (26.9%) | 1.94 [0.98;3.85] | |
 Vocational or professional school | 18 (11.5%) | 7 (9.0%) | 0.86 [0.34;2.22] | |
 Polytechnic or equivalent | 14 (9.0%) | 5 (6.4%) | 0.79 [0.27;2.34] | |
Blood type | 0.483 | |||
 A | 57 (36.8%) | 28 (37.3%) | ref | |
 B + AB | 50 (32.3%) | 29 (38.7%) | 1.18 [0.62;2.25] | |
 O | 48 (31.0%) | 18 (24.0%) | 0.76 [0.38;1.55] | |
Rhesus | 0.988 | |||
 + | 153 (98.7%) | 75 (100.0%) | ref | |
 - | 2 (1.3%) | 0 (0.0%) | < 0.01 [NE] | |
Marital status | 0.042 | |||
 Married | 122 (78.2%) | 74 (94.9%) | ref | |
 Single | 27 (17.3%) | 3 (3.8%) | 0.18 [0.05;0.62] | |
 Free union | 5 (3.2%) | 1 (1.3%) | 0.33 [0.04;2.88] | |
 Divorced/separated/Widowed | 2 (1.3%) | 0 (0.0%) | < 0.01 [NE] | |
Co-morbidities a | 0.532 | |||
 No | 149 (95.5%) | 73 (93.6%) | ref | |
 Yes | 7 (4.5%) | 5 (6.4%) | 1.46 [0.45;4.75] | |
Prior pregnancy | 0.028 | |||
 No | 63 (40.4%) | 20 (25.6%) | ref | |
 Yes | 93 (59.6%) | 58 (74.4%) | 1.96 [1.08;3.58] | |
Having been Breastfed | 0.086 | |||
 No | 142 (91.0%) | 76 (97.4%) | ref | |
 Yes | 14 (9.0%) | 2 (2.6%) | 0.27 [0.06;1.21] | |
Having any siblings | 0.003 | |||
 No | 54 (34.6%) | 12 (15.4%) | ref | |
 Yes | 102 (65.4%) | 66 (84.6%) | 2.91 [1.45;5.85] | |
Family history of endometriosis | 0.477 | |||
 No | 149 (95.5%) | 76 (97.4%) | ref | |
 Yes | 7 (4.5%) | 2 (2.6%) | 0.56 [0.11;2.76] |