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Table 2 ORs for the prevalence of hypertension in postmenopausal women according to past use of OC

From: Association between past oral contraceptive use and the prevalence of hypertension in postmenopausal women: the fifth (2010–2012) Korea National Health and Nutrition Examination Survey (KNHANES V)

Duration of OC use
  No. (n = 2713)  < 30 months (n = 489)  ≥ 30 months (n = 184)
   OR (95%CI) P value OR (95%CI) P value
Model 1 1 (ref) 1.10 (0.86–1.40) 0.457 2.18 (1.53–3.12)  < 0.001
Model 2 1 (ref) 1.04 (0.81–1.34) 0.746 2.11 (1.31–3.42) 0.002
Model 3 1 (ref) 1.05 (0.80–1.37) 0.166 1.75 (1.12–2.74) 0.021
  1. Model 1: unadjusted; model 2: adjusted for age and BMI; model 3: adjusted for age, BMI, education level, household income, smoking status, alcohol consumption, physical activity, current medical status (DM and dyslipidemia), and reproductive factors (age at menopause and number of pregnancies)