. Author manuscript; available in PMC: 2013 May 1.

Published in final edited form as: Early Hum Dev. 2012 May;88(Suppl 2):S92–S97. doi: 10.1016/S0378-3782(12)70025-7

Table 1.

Demographics

	Positive blood culture	Negative blood culture	No blood culture
	N=656 (%)	N=2403 (%)	N=8579 (%)
Birth weight (g)
<750	25	11	1
750–1499	43	36	12
1500–2499	16	25	33
2500–3499	12	21	37
≥3500	4	7	16
Gestational age (weeks)
<26	23	9	1
26–28	30	19	4
29–33	21	30	20
34–36	11	15	27
≥37	15	27	48
Female	49	49	48
Race/ethnicity
White	49	50	59
Black	19	15	12
Hispanic	24	30	23
Asian	7	5	6
5-minute Apgar score
0–3	6	3	1
4–6	15	14	7
7–10	79	83	92
Received antenatal steroids	55	43	21
Vaginal delivery	31	38	45
Respiratory support^a
Room air	10	14	35
Nasal cannula or hood O₂	9	16	28
CPAP	7	12	12
Ventilator	54	46	22
HFV	21	12	3
Died	11	6	3

CPAP, continuous positive airway; HFV, high-frequency ventilation.

Respiratory support on the first day of life.