Prevalence of vitamin D deficiency and its determinants in Australian adults aged 25 years and older: a national, population-based study.
Clin Endocrinol (Oxf)
; 77(1): 26-35, 2012 Jul.
Article
en En
| MEDLINE
| ID: mdl-22168576
ABSTRACT
OBJECTIVE:
Vitamin D deficiency is recognized as a global public health problem, but the population-based prevalence of deficiency and its determinants in Australian adults is not known. This study evaluated the vitamin D status of Australian adults aged ≥25 years and risk factors associated with vitamin D deficiency in this population. DESIGN AND PATIENTS We studied a national sample of 11,247 Australian adults enrolled in the 1999/2000 Australian Diabetes, Obesity and Lifestyle (AusDiab) study drawn from 42 randomly selected districts throughout Australia. MEASUREMENTS Serum concentrations of 25-hydroxyvitamin D [25(OH)D] were measured by immunoassay. Vitamin D deficiency was defined as a concentration <50 nmol/l. Information on demographic and lifestyle factors was derived from interview-administered questionnaires.RESULTS:
The mean serum 25(OH)D concentration was 63 nmol/l (95% CI 59-67 nmol/l). Only 4% of the population had a level <25 nmol/l, but the prevalence of vitamin D deficiency (<50 nmol/l) was 31% (22% men; 39% women); 73% had levels <75 nmol/l. The prevalence of vitamin D deficiency increased significantly with age, was greater in women, in those of non-Europid origin, in the obese and those who were physically inactive and with a higher level of education. Deficiency was also more common during winter and in people residing in southern Australia (latitude >35°S); 42% of women and 27% of men were deficient during summer-autumn, which increased to 58% and 35%, respectively, during winter-spring.CONCLUSION:
Vitamin D deficiency is common in Australia affecting nearly one-third of adults aged ≥25 years. This indicates that strategies are needed at the population level to improve vitamin D status of Australians.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Deficiencia de Vitamina D
Tipo de estudio:
Prevalence_studies
/
Risk_factors_studies
Límite:
Adult
/
Aged
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Aged80
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Female
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Humans
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Male
/
Middle aged
País/Región como asunto:
Oceania
Idioma:
En
Revista:
Clin Endocrinol (Oxf)
Año:
2012
Tipo del documento:
Article
País de afiliación:
Australia