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Table 1 Demographic and baseline characteristics of the women with DIE vs OMA

From: Factors associated with deep infiltrating endometriosis versus ovarian endometrioma in China: a subgroup analysis from the FEELING study

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]
  1. aIncludes cancer, allergic disease and other diseases