Effect of weekly vitamin D supplements on mortality, morbidity, and growth of low birthweight term infants in India up to age 6 months: randomised controlled trial

Geeta Trilok Kumar, Harshpal Singh Sachdev, Harish Chellani, Andrea M Rehman, Vini Singh, Harsh Arora, Suzanne Filteau, Geeta Trilok Kumar, Harshpal Singh Sachdev, Harish Chellani, Andrea M Rehman, Vini Singh, Harsh Arora, Suzanne Filteau

Abstract

Objective: To investigate whether vitamin D supplementation can decrease the mortality and morbidity of low birthweight infants in low income countries.

Design: Randomised controlled trial.

Setting: Large government hospital in New Delhi, India.

Participants: 2079 low birthweight infants born at term (>37 weeks' gestation).

Main outcome measures: Primary outcome was admission to hospital or death during the first six months of life. Main secondary outcome was growth.

Interventions: Weekly vitamin D supplements for six months at a dose of one recommended nutrient intake per day (35 µg/week). Infants were visited weekly at home for observed supplementation and were brought to the clinic monthly for clinical examination and anthropometric measurements.

Results: Between group differences were not significant for death or hospital admissions (92 among 1039 infants in the vitamin D group v 99 among 1040 infants in the placebo group; adjusted rate ratio 0.93, 95% confidence interval 0.68 to 1.29; P = 0.68), or referral to the outpatient clinic for moderate morbidity. Vitamin D supplementation resulted in better vitamin D status as assessed by plasma calcidiol levels at six months. In adjusted analyses, vitamin D treatment significantly increased standard deviation (z) scores at six months for weight, length, and arm circumference and decreased the proportion of children with stunted growth (length for age z score ≤ 2) or with arm circumference z scores of 2 or less.

Conclusion: A weekly dose of vitamin D resulted in better vitamin D status and benefited the classic vitamin D function of bone growth but did not decrease the incidence of severe morbidity or death among young low birthweight infants. Trial registration ClinicalTrials.gov NCT00415402.

Conflict of interest statement

Competing interests: All authors have completed the Unified Competing Interest form at www.icmje.org/coi_disclosure.pdf (available on request from the corresponding author) and declare: no support from any organisation for the submitted work; no financial relationships with any organisations that might have an interest in the submitted work in the previous three years, no other relationships or activities that could appear to have influenced the submitted work.

Figures

https://www.ncbi.nlm.nih.gov/pmc/articles/instance/4788083/bin/kumg841403.f1_default.jpg
Fig 1 Flow of participants through study
https://www.ncbi.nlm.nih.gov/pmc/articles/instance/4788083/bin/kumg841403.f2_default.jpg
Fig 2 Kaplan-Meier plot of time to admission to hospital or death of infants receiving vitamin D supplementation or placebo

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Source: PubMed

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