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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Fertil Steril. 2012 Dec 1;99(3):790–795. doi: 10.1016/j.fertnstert.2012.11.013

Table 2.

In utero exposures and the odds of an endometriosis diagnosis by cohort, The ENDO Study.

Operative Cohort (n=473) Population Cohort (n=127)
In Utero Exposures Unadjusted OR (95% CI) Adjusted OR1 (95% CI) Unadjusted OR (95% CI) Adjusted OR1 (95% CI)
Maternal Behavior
 Vitamins 1.29 (0.87, 1.91) 1.27 (0.85, 1.91) 0.62 (0.18, 2.10) 0.60 (0.16, 2.15)
 Caffeine 0.82 (0.54, 1.25) 0.99 (0.64, 1.54) 0.86 (0.22, 3.32) 0.76 (0.19, 3.03)
 Cigarettes 1.15 (0.61, 2.16) 1.16 (0.61, 2.24) -- --
 Alcohol 0.76 (0.33, 1.75) 0.82 (0.35, 1.94) -- --
Paternal Behavior
 Cigarettes 0.72 (0.44, 1.18) 0.72 (0.43, 1.19) 3.41 (0.82, 14.3) 3.43 (0.75, 15.7)
Index Woman Unadjusted OR (95% CI) Adjusted OR (95% CI) Unadjusted OR (95% CI) Adjusted OR (95% CI)
 Preterm 1.00 (0.50, 1.99) 0.98 (0.47, 2.03) -- --
 Low Birth Weight2 1.09 (0.92, 1.30) 1.10 (0.92, 1.32) 0.80 (0.50, 1.28) 0.81 (0.50, 1.32)

NOTE: In utero exposures were simultaneously included in model.

1

Model adjusted for clinical site (California/Utah), currently smoking (yes/no), age at menarche (years) and BMI (weight in kg/height in m2).

2

As lower birth is associated with increased risk of endometriosis in previous studies, birth weight entered the model so that the estimated OR/AOR confers the effect of every pound less in weight.