ArticleInternational journal of environmental research and public health2019
Prevalence of Vitamin D Deficiency and Its Associated Work-Related Factors among Indoor Workers in a Multi-Ethnic Southeast Asian Country.
Article in International journal of environmental research and public health, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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Who cites it
22 citing papers in PubMed, 34 citations in OpenAlex.
- Impact of Maternal Vitamin D Levels on Offspring Bone Development: Systematic Review.Journal of bone metabolism · 2026Article
- Comparison of serum vitamin D level and vitamin D receptor gene FokI polymorphism in leprosy patients with and without trophic ulcers: A case-control study.PLoS neglected tropical diseases · 2026Article
- Predictors of vitamin D deficiency and quality of life in obese patients with obstructive sleep apnea.Scientific reports · 2026Article
- Occurrence and Correlates of Vitamin D and Iron Deficiency in Children with Autism Spectrum Disorder.Nutrients · 2025Observational
- Vitamin D Knowledge, Attitudes, Practices and Serum Concentration Among Pregnant Women Attending a Malaysian Tertiary Hospital.Food science & nutrition · 2025Article
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- Sex and race disparities in the association between work characteristics and vitamin D deficiency: findings from the National Health and Nutrition Examination Survey, 2005-2010.Occupational and environmental medicine · 2024Article
- Association between sleep quality and quality of life in Singapore.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2024Article
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- Hypovitaminosis D in university workers in Southern Ecuador: interactions between gender and lifestyle.Frontiers in nutrition · 2024Article
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- The Effect of Vitamin D Deficiency Treatment on Lipid Profile and C-reactive Protein in Patients with Ischemic Heart Disease: Double-blind Randomized Clinical Trial.Advanced biomedical research · 2024Article
- Prevalence and risk factors of vitamin D deficiency among patients with chronic myofascial pain syndrome: a cross-sectional study.BMC nutrition · 2023Article
- Vitamin-D Status and Clinical Outcomes in Critically Ill Children.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2023Article
- Development of Innovative Vitamin D Enrichment Designs for Two Typical Italian Fresh Cheeses: Burrata and Giuncata.Molecules (Basel, Switzerland) · 2023Article
- Lower Serum Calcium Levels Associated with Disrupted Sleep and Rest-Activity Rhythm in Shift Workers.Nutrients · 2022Article
- Vitamin D status in the active duty Navy military personnel: protocol for a systematic review.BMJ open · 2022Article
- A survey-based evaluation of ambulance staff awareness of vitamin D and risk of deficiency in a UK ambulance service.British paramedic journal · 2021Article
- Lack of Seasonal Variations in Vitamin D Concentrations among Hospitalized Elderly Patients.International journal of environmental research and public health · 2021Article
Corrections and comments
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Authors and funding
10 authors at 1 institution in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Little is known about the effect of working conditions on vitamin D status in Southeast Asia, where vitamin D deficiency is common despite the presence of sunlight all year round in most places. We examined the prevalence of vitamin D deficiency and its associated work-related factors among indoor workers using the data of 213 participants (aged ≥21 years) from a workplace cohort study in Singapore. Vitamin D deficiency was defined as serum 25-hydroxyvitamin D (25(OH)D) concentration <50 nmol/L. Data on work-related factors, socio-demographic characteristics, and lifestyle habits were collected using standardized questionnaires. Clinical and biochemical measurements were performed using standard tools and protocols. Multivariate Poisson regression was used to examine the independent association of work-related factors with vitamin D deficiency. Mean serum 25(OH)D concentration was 59.6 nmol/L. The prevalence of vitamin D deficiency was 32.9% (95% confidence interval (CI): 26.6-39.6%). In the multivariate analysis, office workers (prevalence ratio (PR): 2.16, 95% CI: 1.12-4.16 versus control room workers), workshop workers (PR: 2.25, 95% CI: 1.05-4.81 versus control room workers), and night shift workers (PR: 1.31, 95% CI: 1.03-1.67) were at a greater risk for vitamin D deficiency. Workplace policies and wellness programs should encourage workers to take regular breaks to go outdoors for sunlight exposure and to consume adequate amounts of vitamin D-rich foods to maintain optimal vitamin D levels.
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