Pregnancy health in a multi-state U.S. population of systemically underserved patients and their children: PROMISE cohort design and baseline characteristics

Table 4 Total and trimester-specific GWG calculated from observed weights among included pregnancies [mean (SE) unless otherwise noted]

			Maternal pre-pregnancy BMI classification
	N	Total	Underweight	Normal weight	Overweight	Obesity Class I	Obesity Class II	Obesity Class III
Total GWG (kg)^a	56,503	11.85 (6.49)	14.80 (5.25)	14.10 (5.48)	11.95 (6.04)	9.93 (6.48)	8.57 (7.03)	6.88 (7.92)
Total GWG (adherence to IOM/NAM recommendations)^a (%)
< recommendations	56,503	25.7	35.3	30.8	18.6	21.0	30.7	41.8
Within recommendations	56,503	31.7	43.2	36.4	31.2	27.4	26.0	22.0
> recommendations	56,503	42.6	21.5	32.8	50.2	51.6	43.3	36.1
First trimester (kg/week)^b	49,569	0.003 (0.45)	0.16 (0.41)	0.07 (0.41)	0.00 (0.43)	-0.05 (0.46)	-0.08 (0.49)	-0.12 (0.56)
Second trimester (kg/week)^b	67,708	0.46 (0.30)	0.57 (0.26)	0.55 (0.27)	0.48 (0.28)	0.39 (0.29)	0.33 (0.30)	0.25 (0.36)
Third trimester (kg/week)^b	67,822	0.51 (0.34)	0.54 (0.31)	0.55 (0.30)	0.51 (0.32)	0.48 (0.34)	0.46 (0.40)	0.45 (0.48)

^aAmong pregnancies with a weight measure within 2 weeks of delivery that also qualify as full-term (at least 37 weeks)
^bRequiring 2 or more valid weight measurements, at least 1 week apart

ISSN: 1471-2458