TABLE 2

Relationship between maternal glucose and sum of skin folds >90th percentile*

n>90th percentileModel IModel II
FPG (mmol/l)
    <4.23,340177 (5.3)1.001.00
    4.2–4.46,270480 (7.7)1.48 (1.24–1.77)1.39 (1.16–1.66)
    4.5–4.75,186504 (9.7)1.92 (1.61–2.30)1.66 (1.38–1.99)
    4.8–4.92,287278 (12.2)2.47 (2.03–3.01)2.00 (1.64–2.45)
    5.0–5.21,556259 (16.6)3.57 (2.92–4.37)2.72 (2.20–3.36)
    5.3–5.5576119 (20.7)4.65 (3.62–5.99)3.37 (2.59–4.38)
    ≥5.617446 (26.4)6.42 (4.44–9.29)4.71 (3.22–6.89)
    Continuous19,3891,863 (9.6)1.52 (1.45–1.59)1.39 (1.33–1.47)
1-h Plasma glucose (mmol/l)
    ≤5.83,482212 (6.1)1.001.00
    5.9–7.36,258483 (7.7)1.29 (1.09–1.52)1.22 (1.03–1.45)
    7.4–8.65,007468 (9.3)1.59 (1.34–1.88)1.50 (1.26–1.78)
    8.7–9.52,324310 (13.3)2.37 (1.98–2.85)2.22 (1.84–2.69)
    9.6–10.71,570245 (15.6)2.85 (2.35–3.46)2.63 (2.14–3.22)
    10.8–11.7536103 (19.2)3.67 (2.84–4.74)3.38 (2.59–4.41)
    ≥11.821242 (19.8)3.81 (2.64–5.49)3.57 (2.46–5.20)
    Continuous19,3891,863 (9.6)1.44 (1.37–1.51)1.42 (1.35–1.49)
2-h Plasma glucose (mmol/l)
    ≤5.03,537209 (5.9)1.001.00
    5.1–6.06,135496 (8.1)1.40 (1.18–1.66)1.32 (1.11–1.56)
    6.1–6.94,948481 (9.7)1.71 (1.45–2.03)1.60 (1.35–1.90)
    7.0–7.72,556352 (13.8)2.54 (2.13–3.04)2.38 (1.98–2.86)
    7.8–8.71,444198 (13.7)2.53 (2.06–3.11)2.39 (1.93–2.95)
    8.8–9.857690 (15.6)2.95 (2.26–3.84)2.80 (2.13–3.69)
    ≥9.919337 (19.2)3.78 (2.57–5.55)3.59 (2.42–5.33)
    Continuous19,3891,863 (9.6)1.37 (1.31–1.44)1.36 (1.30–1.43)
  • Data are n (%) or OR (95% CI). n = total number in the glucose category (excluding births with gestational age <30 weeks and fetal deaths). Model I, adjusted for the variables used in estimating 90th percentiles; model II, adjusted for age, BMI, BMI2, height, mean arterial blood pressure, gestational age at the OGTT, smoking, alcohol use, hospitalization prior to delivery, and any family history of diabetes.

  • *

    * Defined based on sex, ethnicity, field center, gestational age (36–44 weeks), and parity.

  • Number in the glucose category with the sum of skin folds >90th percentile (% proportion in the glucose category with sum of skin folds >90th percentile).

  • Glucose higher by 1 SD (0.4 mmol/l for FPG, 1.7 mmol/l for 1-h plasma glucose, 1.3 mmol/l for 2-h plasma glucose).