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[A study on osteoporosis screening tool for Chinese women]
Juying Zhang1, Tao Wu, Dingzhuo Yang
1Department of Health Statistics, West China School of Public Health, Sichuan University, Chengdu Sichuan, 610041, P. R. China. juying109@163.com
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.
Conclusion:
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.
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