Reliability of self-reported sun exposure in Canadian women and estimation of lifetime exposure to vitamin D from sun and diet

Public Health Nutrition

Heather K Neilson¹  Yan Dong¹  Linda S Cook¹  Bevin L Moon¹ 

关键词: Vitamin D;    Sunlight;    Reproducibility of results;    Interview;    Telephone;    Correlation of data;   

DOI  :  10.1017/S136898001300178X

学科分类：卫生学

来源: Cambridge University Press

【 摘 要 】

AbstractObjectiveTo assess the inter-method reliability of the Ovarian Cancer in Alberta (OVAL) survey developed to estimate adult vitamin D exposure from sun and diet for every tenth year, against the longer Geraldton Skin Cancer Prevention Survey (the assumed ‘gold standard’). We also estimated total vitamin D exposure using the OVAL survey.DesignA randomized crossover design to assess the inter-method reliability of sun exposure (OVAL v. Geraldton survey), using intra-class correlation and estimated total vitamin D exposure from sun and diet. SettingCalgary, Alberta, Canada.SubjectsRandomly selected women (n 90) aged 40–79 years.ResultsThe average lifetime sun exposure of 13 913 h (average 411 h/year) from the Geraldton survey was not significantly different from the 13 034 h (average 385 h/year) from the OVAL survey for periods with sufficient UV radiation to stimulate vitamin D production. The intra-class correlation coefficient for average lifetime sun exposure was 0·77 (95 % CI 0·69, 0·86); the annual average was 0·60 (95 % CI 0·47, 0·74). Estimated vitamin D from diet and supplements increased with age.ConclusionsOur OVAL survey reliably estimated adult sun exposure relative to the Geraldton survey, suggesting that assessing sun exposure every tenth year is a reliable and efficient method for estimating sun contributions to lifetime vitamin D exposure.

【 授权许可】

Unknown