Table 4.

Spearman coefficients and partial correlation coefficients between the IBR factor components and Bayley’s MDI and PDI at 24 months of age

Factors	MDI				PDI
	r	P	r*	P a	r	P	r*	P a
Activity	0.354	<0.001	0.371	<0.001	0.054	0.170	0.034	0.397
Social adaptability	0.175	<0.001	0.153	<0.001	0.012	0.756	0.002	0.963
Reactivity	0.103	0.008	0.044	0.274	0.139	<0.001	0.107	0.008
Endurance	0.115	0.003	0.101	0.012	0.074	0.058	0.067	0.100
Concentration	0.134	0.001	0.203	<0.001	−0.145	<0.001	−0.120	0.003
Motor coordination	−0.030	0.446	0.018	0.660	0.063	0.110	0.065	0.110

IBR, infant behavior record; MDI, mental development index; PDI, psychomotor development index; r, correlation coefficient. *r and ^aP values were adjusted according to maternal micronutrient supplementation (treatment), number of supplement tablets consumed, age of children at assessment, gestational week at delivery, infants’ birth weight, mother’s age at delivery, MUAC at delivery, maternal education level and occupation, paternal education level and occupation, household wealth, and primary caregivers of infant.