The D-VinCHI study: secondary analysis of vitamin D dietary intakes pre-2020 and post-2021
Abstract
Vitamin D is best known for its role in the prevention of rickets and osteomalacia and may have a protective role in non-communicable diseases (1) . In the UK, low dietary intakes of vitamin D are evident in all age groups. Currently, 29 – 40% of children do not meet the reference nutrient intake of 10 μ g/day vitamin D from all dietary sources including from supplementation (2) . The COVID-19 pandemic highlighted the association between vitamin D and immune health in the popular media, this may have led to increased dietary intakes of vitamin D including from supplementation within the UK population. This study aimed to explore the vitamin D dietary intakes in children before and after the COVID-19 lockdown. A secondary analysis of the D-VinCHI study (3) was undertaken to compare healthy children aged 4 – 11 years old who completed the study before the initial COVID-19 lockdown (pre-March 2020) and post-COVID-19 lockdown (post- July 2021). Daily vitamin D dietary intakes were assessed using a retrospective vitamin D food frequency questionnaire (4) . Contribution of different food groups to vitamin D intakes were also quanti fi ed. A total of 77 children were enrolled within the study between November 2019 and February 2022. The mean (± SD) age of participants was 8.12 (± 2.09) years and 45.5% were female. The mean (± SD) height and weight of participants were 133.36 (± 13.91) cm and 32.36 (± 11.79) kg respectively. The mean (± SD) body mass index (BMI) was 17.60 (± 3.19)…
How strong is the evidence?
Evidence Hub reads this as a secondary / pooled analysis, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 77 participants or records.
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