TABLE 4-4Gestational Weight Gain (pounds) by Prepregnancy BMI Among Mothers Delivering Full-term, Singleton Births, PRAMS, 2004–2005

BMI Group≤ 14 (n = 8,442)a15–24 (n = 10,583)a25–34 (n = 15,477)a35–44 (n = 10,942)a≥ 45 (n = 7,544)a
Underweight (BMI, < 18.5 kg/m2)10.50.917.
Normal (BMI, 18.5–24.9 kg/m2)10.40.316.10.331.80.424.70.417.10.3
Overweight (BMI, 25.0–29.9 kg/m2)15.70.520.30.527.50.620.50.516.10.5
Obese (BMI, ≥ 30.0 kg/m2)29.80.724.40.622.10.613.10.510.70.5

NOTE: χ2 test for the difference in gestational weight gain by body mass index (BMI) group was statistically significant (p < .001).


Based on unweighted data.


Based on weighted data; percentages were age adjusted.

SOURCE: Reprinted from Chu S. Y., W. M. Callaghan, C. L. Bish and D. D’Angelo. Gestational weight gain by body mass index among U.S. women delivering live births, 2004–2005: fueling future obesity. American Journal of Obstetrics and Gynecology. Copyright (2009), with permission from Elsevier.

From: 4, Determinants of Gestational Weight Gain

Cover of Weight Gain During Pregnancy
Weight Gain During Pregnancy: Reexamining the Guidelines.
Institute of Medicine (US) and National Research Council (US) Committee to Reexamine IOM Pregnancy Weight Guidelines; Rasmussen KM, Yaktine AL, editors.
Washington (DC): National Academies Press (US); 2009.
Copyright © 2009, National Academy of Sciences.

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