![]() Vitamin D assessment in population-based studies: a review of the issues. Randomized controlled trials are suggested to explore the effectiveness of this simple intervention to prevent or treat vitamin D deficiency in children. ![]() ![]() There is a significant positive correlation between afternoon sunlight exposure and infant’s vitamin D levels, independent of maternal vitamin D status. Of 100 mother-infant pairs completing the study, 90 mothers had vitamin D deficiency (serum 25(OH)D 20 ng/mL) by 6 months of age. Sun index for exposure in morning (before 10 am) and afternoon (10 am-3 pm) were also correlated to vitamin D status. Main outcome measuresĬumulative Sun Index was calculated as a composite measure of overall duration/time/body surface area exposed to sunlight and correlated with the infant serum 25(OH)D after adjusting for baseline maternal serum 25(OH)D levels, season of exposure, and skin color of the infant. Infant’s serum 25(OH)D was measured at 6 months of age. The mothers were asked to maintain a daily record of duration of sunlight exposure, timing of exposure, and body surface area exposed, for the infant, on a pre-designed proforma, till the child was 6 months of age. Methodsīaseline maternal vitamin D (serum 25(OH)D) levels were obtained at enrolment. Of these, 100 infants were available for final evaluation at 6 months of age (mean (SD) follow-up: 126 (17) days). Participantsġ32 healthy infants, delivered at term, and predominantly breastfed were enrolled at 6-8 weeks of age. Tertiary-care hospital predominantly catering to urban poor population in Delhi. To correlate the sunlight exposure in first 6 months to vitamin D status at 6 months of age in predominantly breastfed infants and to quantify the sunlight exposure required to achieve serum 25(OH)D level >20 ng/mL, by 6 months of age Design
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |