This Austrian study suggests that the majority of institutionalized female patients are vitamin D deficient during winter and that there was an inverse association of 25(OH)D and mortality.
961 elderly female patients over the age of 70 years were recruited from nursing homes in Austria and the serum level of 25-hydroxy vitamin D [25(OH)D] was measured in February and March.
- Key findings:
- Median 25(OH)D concentration was 17.5 nmol/L and 93% had 25(OH)D levels below 50 nmol/L (recommended level).
- 284 patients died during a mean follow-up time of 27 ± 8 months.
- When adjusted for age, those with 25(OH)D lower than 14 nmol/L had 1.49 increased risk of mortality compared to those with 25(OH)D higher than 25.5 nmol/L.
The majority of institutionalized female patients are vitamin D deficient during winter, and 25(OH)D level is inversely associated with mortality.
Pilz S, Dobnig H, Tomaschitz A, Kienreich K, Meinitzer A, Friedl C, Wagner D, Piswanger-Sölkner C, März W, Fahrleitner-Pammer A. Low 25-Hydroxyvitamin D Is Associated with Increased Mortality in Female Nursing Home Residents. J Clin Endocrinol Metab. 2012 Feb 8. [Epub ahead of print]. Link to PubMed