Association Between Hypovitaminosis D in Elderly Women and Long- and Short-Term Mortality-Results from the Osteoporotic Prospective Risk Assessment Cohort

作者：Buchebner David; McGuigan Fiona; Gerdhem Paul; Ridderstrale Martin; Akesson Kristina^*

来源：Journal of the American Geriatrics Society, 2016, 64(5): 990-997.

DOI：10.1111/jgs.14087

• vitamin D
• mortality
• elderly
• women

ObjectivesTo investigate the association between low vitamin D levels (<50nmol/L) and 10-year mortality in women aged 75 and older.
DesignProspective with 15years of follow-up.
SettingMalmo, Sweden.
ParticipantsPopulation-based cohort of 75-year-old women (N=1,044).
MeasurementsSerum 25-hydroxyvitamin D (25(OH)D) levels at age 75 (n=1,011), 80 (n=642), and 85 (n=348) were categorized as low (<50nmol/L), intermediate (50-75nmol/L) and high (>75nmol/L) at all ages. Hazard ratios (HRs) for all-cause mortality between ages 75 and 90 were calculated according to 25(OH)D category.
ResultsBetween ages 80 and 90, all-cause mortality (HR=1.8, 95% confidence interval (CI)=1.3-2.4, P<.001; adjusted for comorbidities (aHR)=1.9, 95% CI=1.4-2.6, P<.001) was significantly higher in women with low 25(OH)D levels than in those with high levels. Osteoporosis had the greatest effect on mortality, but even after excluding women with osteoporotic fracture during the risk of dying associated with low 25(OH)D remained greater (HR=1.8, 95% CI=1.2-2.7, P=.002; aHR=1.7, 95% CI=1.2-2.5, P=.006).
ConclusionIn this observational study of women aged 75 and older, 25(OH)D levels of less than 50nmol/L were associated with greater all-cause mortality for up to 10years. This difference was at least partially independent of comorbidities and fracture, indicating that low 25(OH)D not only is an indicator of impaired health, but also plays a role in disease outcome.

• 出版日期2016-5