Sensorineural disabilities at 2 years of age for children born in 1991-92: disability for ELBW and NBW children reclassified on mean (SD) for psychological test scores for NBW children
| Birthweight subgroup | |||
|---|---|---|---|
| ELBW (500-999 g) | NBW (> 2499 g) | ||
| Survivors assessed | 237 | 242 | |
| Disability: | |||
| Nil | 133 (56.1%) | 198 (81.8%) | |
| Mild | 59 (24.9%) | 36 (14.9%) | |
| Moderate | 29 (12.2%) | 4 (1.7%) | |
| Severe | 16 (6.8%) | 4 (1.7%) | |
Data are numbers of infants (% survivors assessed).
Mann-Whitney U test for disability in ELBW cohort vs NBW cohort; z = 6.4, P < 0.0001.
ELBW = extremely low birthweight; NBW = normal birthweight.