Table 2.

Infant characteristics at 7 months of age.

Infant Characteristics	Underweight Mothers (n = 63)		Normal Weight Mothers (n = 43)		Overweight Mothers (n = 29)		% Difference Underweight vs. Normal Weight	% Difference Overweight vs. Normal Weight
	Mean (SD) or n (%)		Mean (SD) or n (%)		Mean (SD) or n (%)
Age, months ~	7.2	0.6	7.5	1.1	7.5	1.0	−4.0	0.7
Weight (kg)	7.1	0.9	7.4	0.9	7.4	1.0	−3.3	1.2
Weight for Age (Z-score)	−1.1	1.1	−0.9	1.1	−0.8	1.1	0.0 *	0.0 *
Length (cm)	66.7	2.5	67.1	2.3	67.6	2.6	−0.7	0.7
Length for Age (Z-score)	−0.8	1.1	−0.7	1.0	−0.6	1.0	0.0 *	0.0 *
Weight for Length (Z-score)	−0.8	1.1	−0.5	1.2	−0.6	1.2	0.0 *	0.0 *
Breast Feeding: yes	50.0	79.4	37.0	86.1	24.0	82.8	−6.7	−3.3
Glucose 0 min (mg/dL)	79.7	9.5	82.5	12.2	82.7	15.5	−3.4	0.2
Glucose 30 min (mg/dL)	105.7	22.0	114.0	21.7	109.8	22.6	−7.3	−3.7
Insulin 0 min (mIU/L)	2.6	3.5	2.2	2.4	4.5	7.9	15.4	103.6
Insulin 30 min (mIU/L)	8.9	7.1	9.7	8.1	10.2	7.3	−8.5	4.8
C-Peptide 0 min (pmol/L)	157.3	160.4	161.2	114.9	259.1	208.9	−2.4	60.7
C-Peptide 30 min (pmol/L)	395.3	231.7	443.8	280.4	471.4	251.0	−10.9	6.2
HOMA2-IR	0.34	0.36	0.35	0.25	0.56	0.45	−3.1	59.1
HOMA2-B	51.1	28.4	52.8	24.9	74.2	38.8	−3.1	40.6
Insulinogenic Index (using C-peptide, nmol/mmol)	0.17	2.39	0.14	2.20	0.18	1.31	15.0	27.1
Disposition Index (using C-peptide, L/mmol)	1.9	2.5	1.3	2.6	1.2	3.7	49.2	−6.8

Geometric means and SDs reported for disposition index. (%). ~ Month defined as 30 days. * For Z-score variables, differences in Z scores are shown.