TABLE 2.

Predicted total, trimester, and weekly weight change (kg) to 38 wk for each gestational weight change latent class by prepregnancy obesity grade (n = 22,355)

	Week	Obesity grade 1			Obesity grade 2			Obesity grade 3
		Total	Trimester rate	Weekly rate	Total	Trimester rate	Weekly rate	Total	Trimester rate	Weekly rate
Class 1	14	3.61		0.26	2.80		0.20	2.45		0.17
	28	7.59	3.99	0.28	5.78	2.97	0.21	4.42	1.98	0.14
	38	10.51	2.92	0.29	8.29	2.52	0.25	6.44	2.02	0.20
Class 2	14	1.56		0.11	0.89		0.06	0.14		0.01
	28	6.81	5.26	0.38	4.85	3.96	0.28	2.54	2.40	0.17
	38	11.28	4.46	0.45	9.20	4.35	0.44	7.31	4.78	0.48
Class 3	14	−0.59		−0.04	−1.16		−0.08	−1.65		−0.12
	28	5.01	5.60	0.40	3.98	5.14	0.37	3.48	5.12	0.37
	38	12.01	7.00	0.70	11.02	7.04	0.70	10.56	7.09	0.71
Class 4	14	0.23		0.02	0.38		0.03	0.56		0.04
	28	8.42	8.20	0.59	8.37	7.99	0.57	6.80	6.24	0.45
	38	13.92	5.50	0.55	13.81	5.44	0.54	10.63	3.83	0.38
Class 5	14	−2.65		−0.19	−3.24		−0.23	−3.20		−0.23
	28	6.85	9.51	0.68	5.59	8.83	0.63	5.23	8.43	0.60
	38	15.48	8.63	0.86	14.25	8.66	0.87	15.75	10.52	1.05

Values are estimates from latent class mixed model analysis. Class 1 serves as the reference group for each prepregnancy obesity grade.