Table 2.

HAZ scores in children of 6–9 years old according to intervention groups

(Coefficient values and 95 % confidence intervals; mean values and standard deviations)

		HAZ score		Unadjusted		Adjusted
Intervention group	n	Mean	sd	Coefficient	95 % CI*	Coefficient	95 % CI†
Three groups against the placebo
Placebo	202	–1·05	1·1		Reference		Reference
Vitamin B12	201	–1·02	0·93	0·03	–0·16, 0·22	0·05	–0·12, 0·23
Folic acid	204	–1·08	0·97	–0·03	–0·22, 0·16	–0·08	–0·26, 0·09
Vitamin B12 and folic acid	184	–0·92	0·95	0·13	–0·07, 0·32	0·10	–0·08, 0·28
2 × 2 groups
Placebo vitamin B12	403	–1·07	1·1		Reference		Reference
Vitamin B12	385	–0·97	0·94	0·09	–0·04, 0·22	0·12	–0·01, 0·25
Placebo folic acid	406	–1·03	1		Reference		Reference
Folic acid	388	–1·01	0·96	0·03	–0·10, 0·16	–0·03	–0·15, 0·10

HAZ, height-for-age z-scores.

^*Generalised linear model with the Gaussian family and identity link.

^†Adjusted for wealth quintiles.