Table 7.

Logistic regression of maternal complications, stratified by prepregnancy BMI, compared to IOM recommended GWG

	Underweight/Normal
	Weight Gain Below IOM Guidelines N = 593	IOM Guidelines for Weight Gain N = 671	Weight gain above IOM Guidelines N = 233
Preeclampsia	0.6 (0.4-1.0)	1.0	2.4 (1.5-3.8)
Gestational hypertension	0.5 (0.2-1.0)	1.0	1.7 (0.9-3.3)
Gestational diabetes	0.8 (0.4-1.8)	1.0	0.5 (0.1-1.8)

	Overweight
	Weight Gain Below IOM Guidelines N = 222	IOM Guidelines for Weight Gain N = 247	Weight gain above IOM Guidelines N= 137
Preeclampsia	0.5 (0.2-1.0)	1.0	1.6 (0.8-3.0)
Gestational hypertension	0.8 (0.2-2.7)	1.0	2.0 (0.7-6.1)
Gestational diabetes	1.1 (0.5-2.4)	1.0	0.2 (0.1-0.9)

	Obese
	Weight Gain Below IOM Guidelines N = 225	IOM Guidelines for Weight Gain N = 179	Weight gain above IOM Guidelines N = 147
Preeclampsia	0.2 (0.1-0.4)	1.0	1.1 (0.6-2.1)
Gestational hypertension	1.3 (0.5-3.1)	1.0	3.3 (1.4-7.7)
Gestational diabetes	1.4 (0.6-3.1)	1.0	1.0 (0.4-2.4)

Adjusted for maternal age, parity, race, prepregnancy BMI and chronic hypertension