Infants <1500 g | |||
---|---|---|---|
Characteristics | 1986 cohort | 1998–1999 cohort | p Value |
Values are number (%). | |||
*Excludes data for two NICUs for which data were unavailable. | |||
NICU, Neonatal intensive care unit. | |||
Born in a hospital with a level III NICU | 297 (72) | 943 (87) | <0.001 |
Born in a hospital with a level II NICU | 96 (23) | 109 (10) | <0.001 |
Male | 213 (52) | 542 (50) | 0.60 |
Infants from a multiple birth | 94 (23) | 318 (29) | 0.011 |
5 minute Apgar score less than 7 | 77 (19) | 149 (14) | 0.025 |
Major congenital malformation | 25 (6) | 47 (4) | 0.17 |
Antenatal corticosteroids | 214 (58) | 678 (80)* | <0.001 |