| Objective To probe into the ways to improve serum 25-hydroxyvitamin D(25OHD) by means of screening independent factors associated with serum 25OHD in elder women. Methods A cross-sectional survey was conducted in a cohort comprising 280 women. All subjects underwent a survey on underlying chronic diseases and lifestyle factors. The serum levels of bone metabolism markers, biomedical index, anemia-related, index as well as sex steroids were detected. Univariate analysis and multivariate regression analysis were performed to discover independent factors associated with 25OHD. Results It was showed that serum parathyroid hormone (β=-0.097, P<0.01), potassium (β=-18.144, P<0.01), calcium (β=19.912, P<0.01), calcium compound supplement (β=5.362, P<0.01), and sun exposure (β=0.974, P<0.05) were independent 25OHD-associated factors. Conclusion Sun exposure and vitamin D and calcium supplement may help increase serum 25OHD in elder women. |