Table 3.
Risk of LGA by IOM guidelines in each BMI class
| Birth Weight (g)a | LGA (n)/ sample (n) |
< IOM guidelines (149/466) |
> IOM guidelines (193/466) |
|||
|---|---|---|---|---|---|---|
| RR (95% CI) | aRR (95% CI) | RR (95% CI) | aRR (95% CI) | |||
| Normal | 3,328 ± 503 | 9/110 | 0.28 (0.05, 1.44) | 0.53 (0.10, 2.74) | 0.66 (0.16, 2.70) | 0.42 (0.13, 1.40) |
| Overweight | 3,490 ± 505 | 24/167 | 0.96 (0.31, 2.95) | 1.05 (0.68, 4.19) | 1.69 (0.69, 4.16) | 1.68 (0.68, 4.19) |
| Obese | 3,703 ± 545 | 49/189 | 0.58 (0.20, 1.70) | 0.62 (0.21, 1.84) | 2.44 (1.18, 5.04) | 2.62 (1.25, 5.50) |
Abbreviations: aRR, adjusted risk ratio; BMI, body mass index; IOM, Institute of Medicine; LGA, large for gestational age; RR, unadjusted risk ratio.
Notes: Reference group, IOM weight gain guidelines met (124/466).
Normal (BMI 18.5–24.9), overweight (BMI 25.0–29.9), obese (BMI > 30.0); final models adjusted for race/ethnicity, medical management of GDM, and gestational age at delivery.
a
p < 0.001 for birth weight different by BMI class.