Table 1. Neonatal and socio-demographic data of the study groups.
| Variable+ | PVH+VD (n = 12) | UPVH (n = 17) | Normal VPT (n = 12) | Controls (n = 17) |
| Neonatal/socio-demographic characteristics | ||||
| Birth-weight (g) | 1122.33 (395.60) | 1274.47 (396.70) | 1388.92 (372.58) | n/a ++ |
| Gestation at birth (weeks) | 28.42 (2.64) | 28.76 (2.14) | 29.5 (2.43) | n/a |
| Males/Females (number) | 7/5 | 8/9 | 6/6 | 8/9 |
| Age (yrs) at assessment * | 24.58 (2.48) | 22.65 (2.57) | 20.69 (1.92) | 20.75 (1.37) |
| Socio-economic status at assessment (number) a | ||||
| I – II | 6 | 10 | 6 | 7 |
| III | 6 | 5 | 5 | 5 |
| IV – V | 0 | 2 | 1 | 4 |
| Educational level b | ||||
| O-level only | 3 | 2 | 0 | 1 |
| A-level or exultant | 2 | 6 | 7 | 5 |
| 3rd level education | 7 | 9 | 5 | 9 |
+
Mean and standard deviation (SD) are presented, unless otherwise stated.
++
n/a = non-applicable *p<0.001, a For controls n = 1 missing data.
b
For controls n = 2 missing data.