Table 1 Perinatal and social factors
DD Genotype (n = 49) | ID/II Genotype (n = 127) | |
|---|---|---|
No maternal antenatal corticosteroids | 44 (80%) | 112 (81%) |
No. of children from twin pregnancy* | 4 (8%) | 27 (21%) |
Male | 32 (65%) | 76 (60%) |
Gestation, weeks (± SEM) | 29.7 (± 0.3) | 30.0 (± 0.2) |
Birth weight, g (± SEM) | 1453 (± 56) | 1461 (± 34) |
Portage, parent adviser | 17 (31%), 19 (35%) | 46 (33%), 42 (30%) |
Severe intraventricular haemorrhage | 5 (11%) | 7 (6%) |
White matter injury | 7 (14%) | 14 (11%) |
Maternal age (± SEM) | 27.2 (± 0.8) | 27.4 (± 0.8) |
Manual occupation | 28 (57%) | 76 (60%) |
Maternal car use | 30 (61%) | 75 (60%) |
Mother educated beyond 16 yrs. | 17 (35%) | 48 (38%) |