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. Author manuscript; available in PMC: 2010 Apr 13.
Published in final edited form as: Am J Perinatol. 2009 Oct 28;27(1):97–101. doi: 10.1055/s-0029-1241729

Table 1.

Patient Demographics and Hospitalization Statistics among 2490 Subjects

n (%)
Sex 2490 (100)
 Male 1294 (52)
 Female 1196 (48)
 Missing 0 (0)
Gestational age (wk)
 21–33 195 (13)
 34–35 412 (27)
 36–37 647 (42)
 38–46 288 (19)
 Missing 948 (38)
Birth weight (g)
 <1000 25 (1)
 1000–1499 72 (3)
 1500–2499 1186 (48)
 2500+ 1121 (45)
 Missing 86 (3)
Length of stay (d)
 1–14 118 (5)
 15–29 859 (35)
 30–59 898 (36)
 60–99 330 (13)
 100+ 273 (11)
 Missing 12 (0.5)
 Median, IQR (d) 35, 24–58
Adjusted charges ($)
 1–74,999 184 (7)
 75,000–99,999 310 (12)
 100,000–199,999 967 (39)
 200,000–499,999 743 (30)
 500,000–999,999 219 (9)
 1,000,000+ 67 (3)
 Missing 0 (0)
 Median, IQR ($) 172,002, 109,579–293,030
Days in ICU >0 2280 (92)
% of hospitalization in ICU
 0% 210 (8)
 1–25% 346 (14)
 26–50% 255 (10)
 51–75% 261 (10)
 76–99% 1418 (57)
 Missing 210 (8)
 Median, IQR (percentile) 89, 31–97
Mechanical ventilation 1813 (73)
In-hospital mortality 90 (3.6)