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Objects.:Here is a retrospective research in risk factors,such as ages,genders,Body Mass Index(BMI,kg/m2),fracture history and smoking history,how to affect the diagnosis of osteoporosis.Methods:Since 2002,Beijing Aviation Industry central hospital have investigated 7481 cases adults patients with above risk factors.These data were calculated with independent sample t test,ratio risk analysis and Logistic regression analysis.Results:In all the patients,the average age was 57.85±14.14yrs (20-96yrs).The female menarche average age was 14.86±1.98yrs (11-22yrs) and the average menopause age was 49.21±3.95yrs (38-60yrs).