Vitamin D Insufficiency in Australia
Author Information
Author(s): van der Mei Ingrid A.F., Ponsonby Anne-Louise, Engelsen Ola, Pasco Julie A., McGrath John J., Eyles Daryl W., Blizzard Leigh, Dwyer Terence, Lucas Robyn, Jones Graeme
Primary Institution: Menzies Research Institute, University of Tasmania
Hypothesis
What factors contribute to vitamin D insufficiency in different regions of Australia?
Conclusion
Vitamin D insufficiency is common across Australia, particularly in winter and spring, and is influenced more by season than latitude.
Supporting Evidence
- The prevalence of vitamin D insufficiency was 40.5% in southeast Queensland during winter/spring.
- Latitude explained only 3.9% of the variation in vitamin D levels.
- Behavioral factors significantly influenced vitamin D status.
Takeaway
Many people in Australia don't get enough vitamin D, especially in winter and spring, even if they live in sunny places.
Methodology
The study compared vitamin D status in individuals under 60 years old across three regions in Australia using cross-sectional data.
Potential Biases
Potential selection bias due to varying recruitment methods across regions.
Limitations
The study populations were recruited with different eligibility criteria, which could introduce selection bias.
Participant Demographics
Participants were primarily Caucasian women under 60 years of age.
Statistical Information
P-Value
p<0.01
Confidence Interval
95% CI, 0.7–1.3 nmol/L
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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