Admissions and survival in the two cohorts
| Infants <1500 g | |||
|---|---|---|---|
| Numbers and survival | 1986 cohort | 1998–1999 cohort | p Value |
| Unless otherwise stated, values are number (%). | |||
| NICU, Neonatal intensive care unit. | |||
| Live births <1500 g | 453 | 632 (year: ’99) | |
| Admissions to NICUs | |||
| <500 g | 0 (0) | 13 (1) | |
| 500–999 g | 132 (32) | 399 (37) | |
| 1000–1499 g | 281 (68) | 672 (62) | |
| <1500 g | 413 | 1084 | |
| Cohort as % of all New Zealand live births | 0.78 | 0.96 | <0.001 |
| Survival to discharge home | |||
| <500 g | 0 (0) | 5 (38) | |
| 500–999 g | 86 (65) | 324 (81) | <0.001 |
| 1000–1499 g | 252 (90) | 650 (97) | <0.001 |
| <1500 g | 338 (82) | 979 (90) | <0.001 |