title: [A study on osteoporosis screening tool for Chinese women].
abstract: OBJECTIVE
  To establish an osteoporosis screening tool for Chinese 40-years-old or above women.
  
  
  METHODS
  The T-score was calculated based on the mean bone mineral density (BMD) of 20-39 years women. Considering the result of dual-energy X-ray absorptiometry(DXA) as the golden criteria, the Bayes discriminant analysis was employed to explore the function.
  
  
  RESULTS
  The formula of the screening tool for Chinese 40-years-old or above women as following:osteoporosis screenig tool for Chinese (OSTC):Weight-2 x age+50. OSTC< or =0 was classified into high risk, OSTC>0 was low risk. The hit rate of OSTC was 75.78%. The sensitivity is 76.8%. The specificity is 75.1%, Kappa value was 0.51(P= 0.000). That means the consistency of diagnosis result between OSTC and DXA was relatively good.
  
  
  CONCLUSIONS
  OSTC is a simple tool. Just based on age and weight, it can evaluate the osteoporosis risk of Chinese 40-years-old or above women. But the effect of OSTC has not been proved by other dataset and should be tested further.
authors.affiliation: Department of Health Statistics, West China School of Public Health, Sichuan University, Chengdu Sichuan, 610041, P. R. China. juying109@163.com
authors.forename: Juying
authors.initials: J
authors.lastname: Zhang
authors.forename: Tao
authors.initials: T
authors.lastname: Wu
authors.forename: Dingzhuo
authors.initials: D
authors.lastname: Yang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001835:Body Weight; D015519:Bone Density; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae; D008403:Mass Screening / Q000379:methods*; D008875:Middle Aged; D010024:Osteoporosis / Q000175:diagnosis* / Q000453:epidemiology* / Q000517:prevention & control; D015663:Osteoporosis, Postmenopausal / Q000175:diagnosis / Q000453:epidemiology / Q000517:prevention & control; D012307:Risk Factors; D055815:Young Adult