Table 2.

The percent of children who were in the BMI category listed at the top of the column who also had the characteristic listed on the left. These are column percents. This table is restricted to infants whose delivery was for spontaneous indications (including preterm labor, preterm premature rupture of membranes, abruption or cervical insufficiency).

Characteristics of the mother and infant		Child's BMI centile at 24 months			Row N
		< 85	85-94	≥ 95
Public insurance	Yes	40	29	39	281
Black race	Yes	28	22	39	201
Hispanic	Yes	11	10	6	80
Pre-pregnancy	< 18.5	9	9	0	62
BMI	> 30	18	19	35	134
Pregnancy weight gain quartile	Highest	23	19	16	158
	Lowest	23	28	42	171
Gestational diabetes	Yes	6	2	6	39
Histologic chorioamnionitis*	Yes	39	43	47	289
	missing	10	7	9	72
Indication for delivery	PTL	55	45	50	396
	pPROM	27	27	21	193
	Abruption	13	20	18	101
	Cerv insuf	5	8	12	44
Cesarean delivery	Yes	62	50	56	443
Sex	Male	55	67	38	407
# of fetuses	2+	38	30	12	265
Gestational age (weeks)	23-24	24	23	18	174
	25-26	46	47	47	339
Birth weight (grams)	≤ 750	33	30	15	236
	750-1000	48	45	50	348
BW Z-score**	< -2	2	2	0	14
	≥ -2, < -1	8	3	6	58
% Weight gain, week 1	Highest Q	20	17	9	138
Growth velocity† quartile	Lowest	26	18	12	182
	Highest	22	32	35	171
Bacteria in blood	Week 1	6	7	0	44
	Week 2+	25	30	24	188
Necrotizing enterocolitis††	Yes	8	5	9	58
Chronic lung disease§	Yes	50	62	47	373
Maximum number of infants		640	60	34	734

^*Grades 3 and 4

^**Yudkin standard

^†1000 × [(weight day 28 - weight day 7) / weight day 7] / 21

^††Stage IIIa, IIIb, or perforation

^§Receiving oxygen at 36 weeks postconceptional age