Table 2—

ORs and 95% CI for GDM associated with GDM risk factors and BP during the first prenatal visit

Case subjectsControl subjectsCrude OR (95% CI)Adjusted OR* (95% CI)
n381942
Blood pressure
    Normal197 (51.7)668 (70.9)1.001.00
    Prehypertension147 (38.6)240 (25.5)2.08 (1.60–2.60)1.56 (1.16–2.10)
    Hypertension37 (9.7)34 (3.6)3.69 (2.26–6.04)2.04 (1.14–3.65)
Age ≥30 years308 (79.4)502 (51.7)3.54 (2.57–4.88)
BMI ≥25 kg/m2276 (56.4)426 (44.7)2.43 (1.82–3.25)
Nonwhite219 (56.4)458 (47.1)1.77 (1.34–2.34)
First- or second-degree relative with diabetes189 (54.7)320 (35.7)1.73 (1.32–2.28)
1+ live births238 (61.3)556 (57.2)0.77 (0.57–1.04)
  • Data are n (%) unless otherwise indicated.

  • *

    * ORs from multivariate model adjusted for age, BMI at first prenatal visit, race/ethnicity, family history of diabetes, parity, and gestational week at BP measurement.