Table 3—

ORs and 95% CI for GDM associated with BP before pregnancy

Case subjectsControl subjectsCrude OR (95% CI)Adjusted OR* (95% CI)
n381289
Blood pressure
    Normal152 (39.9)329 (54.7)1.001.00
    Prehypertension181 (47.5)230 (38.3)1.66 (1.20–2.30)1.44 (0.95–2.19)
    Hypertension48 (12.6)42 (7.0)2.18 (1.26–3.79)2.01 (1.01–3.99)
  • Data are n (%) unless otherwise indicated. Data are from the subset of women who were members of KPNC 5 years before pregnancy.

  • *

    * Adjusted for age, race/ethnicity, prepregnancy BMI, parity, smoking status, family history of diabetes, and time between BP measurement and pregnancy.