[Study on morbidity and relative factors of postmenopausal osteoporosis in 340 women in Chengdu].

In this cross-sectional study, the radius bone mineral content (BMC) of 340 postmenopausal women (mean age: 53; mean years since menopause: 5.56) were assessed by single photon absorptiometry (SPA) for determining prevalence rate of postmenopausal osteoporosis in Chengdu, and some factors relative to BMC were investigated. Eighty-five of 340 postmenopausal women were diagnosed osteoporosis by SPA. The prevalence rate, which increases with year since menopause and age, is 25%. There is significant increase in prevalence after the age of 60 years or 5 years since menopause. Sixteen factors were analysed by STEPWISE REGRESSION. The variables selected were serum calcium(SCa), serum alkaline phosphatase (SAkP), urine calcium (UCa), urine hydroxypoline (UH), age, and Para. Fisher DISCRIMINANT ANALYSIS was used for diagnosis with these variables, the accuracy of diagnosis being 75.2%. Our study showed that postmenopausal osteoporosis is a common disease in Chengdu. High SCa, UH, age and low SAkP level may be risk factors of osteoporosis.