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Table 2 Logistic regression analyses, showing adjusteda odds ratios (ORs), with the corresponding 95 % confidence intervals (CIs) in brackets

From: Endometriosis as a risk factor for ovarian or endometrial cancer — results of a hospital-based case–control study

Predictor   OR (95 % CI)
Ageb Younger vs. medium 1.36 (1.11, 1.66)
  Older vs. medium 1.24 (1.07, 1.43)
  Older vs. younger 0.91 (0.70, 1.18)
BMIc Low vs. medium 0.99 (0.83, 1.17)
  High vs. medium 1.26 (1.09, 1.46)
  High vs. low 1.28 (0.95, 1.72)
Oral contraceptive use Yes vs. no 0.43 (0.32, 0.58)
No. of pregnancies Per-pregnancy increase 0.93 (0.84, 1.02)
Self-reported endometriosis yes vs. no 2.63 (1.28, 5.41)
  1. BMI body mass index
  2. aORs were estimated using a multiple logistic regression model, with the predictors listed in the first column of the table
  3. bAge was used as a nonlinear continuous predictor. It was evaluated at the first sextile (“young” — i.e., 51 years), median (“medium” — i.e., 62 years), and fifth sextile (“older” — i.e., 70 years)
  4. cBMI was used as a nonlinear continuous predictor. It was evaluated at the first sextile (“low” — i.e., 21.7 kg/m2), median (“medium” — i.e., 25.0 kg/m2), and fifth sextile (“high” — i.e., 30.1 kg/m2)