Table 3.

Characteristics of Infants 501 to 1500 Grams Born in 1994 and Treated at the NICUs in the NIC/Q Project Subgroups and the Comparison Group

Infection
Subgroup
Chronic Lung
Disease Subgroup
Comparison
Group
Number of NICUs6466
Number of infants7453725119
Mean birth weight (g)105610451083
Mean gestational age (wk)292829
Infants 1000 g or less (%)454739
Inborn (%)748286
Multiple births (%)282424
Small for gestational age (%)232221
Assisted ventilation (%)797876