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Table 1 Perinatal and social factors

From: Does angiotensin-1 converting enzyme genotype influence motor or cognitive development after pre-term birth?

  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%)
  1. *p = 0.047 (Fisher's Exact Probability Test)
  2. Continuous data is shown as mean (± standard error of mean).