Table 1.

Characteristics of mothers whose breast milk samples were analyzed in the group supplemented in DHA (S-DHA) and in the placebo group.

Characteristic	Mean ± SDa		P-valueb
	S-DHA (n = 196)	Placebo (n = 193)
Pre-pregnancy
Weight, kgc	70.9 ± 16.1	73.0 ± 19.8	0.59
Body mass index, kg/m2c	26.5 ± 5.9	27.4 ± 7.3	0.66
At delivery
Age, year	30.9 ± 5.3	31.1 ± 5.3	0.71
Gestational age, week	26.7 ± 1.4	26.5 ± 1.6	0.15
Parityc	1.70 ± 0.91	1.85 ± 1.13	0.22
Maternal dietary DHA intake, mg/dayc,d	191 ± 261	189 ± 237	0.60
After delivery
Ratio of capsules taken over expected from randomization until day 14 ± 2 after deliveryc	0.82 ± 0.24	0.78 ± 0.27	0.11

DHA docosahexaenoic acid.

^aUnless otherwise indicated.

^bP-values were estimated by the Mann–Whitney–Wilcoxon test.

^cThere was missing data (< 10%).

^dMean in the last month before randomization.