Table 4. Multivariable-adjusted linear regression analysis showing infants’ developmental outcome scores by vitamin D deficient (<50 nmol/) and sufficient (≥50 nmol/) groups.

Developmental Tests		B ±SE (95% CI)	P value
	Subtests
Bayley	- Cognitive composite score	-0.84±1.71 (-4.21, 2.52)	0.62
	- Motor composite score	-0.65±1.97 (-4.54, 3.25)	0.74
	- Language composite score	-2.32±1.82 (-5.92, 1.27)	0.20
	- Socio-emotional composite score	-0.29±2.32(-4.88, 4.29)	0.90
Temperament	- Activity	1.64±0.78 (0.10, 3.18)	0.037
	- Positive emotion	0.51±0.58 (-0.64, 1.66)	0.38
	- Negative emotion	-0.75±0.94 (-2.61, 1.11)	0.43
	- Soothability	2.02±0.70(0. 64, 3.41)	0.004
	- Soothability (log transformed)	0.03±0.01(0. 008, 0.05)	0.007
	- Sociability	0.85±0.63 (-0.38, 2.09)	0.18
	- Attention	-0.35±0.66 (-1.65,0.96)	0.60
	- Attention (log transformed)	-0.02±0.02 (-0.06,0.02)	0.39
CDI	- Language comprehension	1.28±0.62 (0.05, 2.51)	0.042
	- Language expression	-0.02±0.17 (-0.32,0.36)	0.91
Behavior	- Approach during test	0.02±0.12 (-0.21, 0.25)	0.86
	- Activity during test	0.33±0.16 (0.02, 0.64)	0.035
	- Emotional tone during test	0.10±0.14(-0.17, 0.38)	0.45
	- Cooperativeness during test	0.06±0.12 (-0.18, 0.30)	0.63
	- Vocalization during test	0.28± 0.21 (-0.14, 0.70)	0.19

Intervention effect B is the regression coefficient and SE is the Standard Error. Ranges shown are 95% CIs. Data were assessed in 58 infants in the vitamin D deficient (<50 nmol/L = 1) group versus 147 children in the vitamin D sufficient (≥50nmol = 2) group; these results were adjusted for the age of the child during assessment, asset score, maternal education, amount of stimulation received at home, height for age Z score (measured at the time of test between 7–8 months) and head circumference at 7 months