Table 2.

Effect of infant nutritional supplementation on neurodevelopment outcomes at 12 months of age

							Mean difference (95 % CI)
	Modest-protein group (n 388)		High-protein group (n 372)		No-supplement group (n 374)		Modest-protein group v. no-supplement group (Ref)		High-protein group v. no-supplement group (Ref)		High-protein group v. modest-protein group (Ref)
	Mean	SD	Mean	SD	Mean	SD	Mean difference	95 % CI	Mean difference	95 % CI	Mean difference	95 % CI
BSID composite scores
Cognitive	105·3	10·0	105·1	10·0	104·2	11·3	1·09	–0·44, 2·61	0·91	–0·63, 2·45	–0·18	–1·60, 1·25
Motor	95·7	8·4	94·9	9·1	94·2	8·9	1·52	0·28, 2·75*	0·77	–0·53, 2·06	–0·75	–1·99, 0·49
Language	95·6	8·4	94·8	8·6	94·6	8·9	1·02	–0·22, 2·26	0·22	–1·04, 1·49	–0·80	–2·01, 0·42
Socio-emotional	98	7·5	96·6	7·0	97·1	7·9	0·88	–0·22, 1·97	–0·53	–1·60, 0·55	–1·40	–2·43, −0·37†
Infant temperament
Total infant temperament scores	109·2	9·7	111·2	10·4	111·9	10·9	–2·76	–4·23, −1·29†	–0·71	–2·24, 0·82	2·05	0·62, 3·48†

BSID, Bayley Scales of Infant and Toddler Development; CI, confidence interval.

^*Statistically significant at P < 0·05.

^†Statistically significant at P < 0·01.