From: Increasing illness severity in very low birth weight infants over a 9-year period
Cohort 1 1993–1996, n = 393 | Cohort 2 1996–1999, n = 485 | Cohort 3 1999–2002, N = 536 | |
---|---|---|---|
T4 (μg/dl) | 7.6 ± 3.8 ‡ | 7.0 ± 3.4 | 6.5 ± 3.9 * † |
SNAP | NA | 11.2 ± 5.8 | 13.4 ± 7.6 † |
Death | 14% | 13% | 16% |
Day of death (median, interquartile range) | 7 (2–21) | 10.5 (2–22) | 3 (2–10) * † |
Severe IVH | 9% | 9% | 14% * † |
Death and/or Severe IVH | 18% | 19% | 26% * † |