Maternal and infant characteristics classified by intervention group¹.

1 Values are mean ± SD or % as shown for infants eligible for follow-up and their mothers. 2 Pre-pregnancy weight was by self-report. 3 Maternal IQ was assessed using the Test of Non-Verbal Intelligence-3 (TONI-3) (37). 4 There were more boys in the placebo than the DHA group, P = 0.03, with a trend to less first-born infants in the placebo than DHA group, P = 0.06, by Chi-square. 5 Birth weight was not available from hospital charts for 2 infants in the DHA group (n = 102).