ResultsĮighty (40 in each group) infants with mean (SD) age 47.8 (4.5) days were enrolled. Secondary - proportion of infants developing vitamin D deficiency (<12ng/mL) and rickets in both the groups at 6 months of age. Primary - proportion of infants having vitamin D sufficiency (>20 ng/mL). Randomized to receive sunlight exposure (40% body surface area for a minimum of 30 minutes/week) or oral vitamin D3 supplementation (400 IU/day) till 6 months of age. Participantīreastfed infants at 6–8 weeks of age. Public hospital in Northern India (28.7°N). To compare the efficacy of sunlight exposure and oral vitamin D3 supplementation to achieve vitamin D sufficiency in infants at 6 months of age.
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