运用数字X线摄影法测量跟骨推算身高

The research about stature estimation based on the calcaneus by the method of digital radiography

目的测量跟骨侧位数字X线摄影（DR）片上相关长度指标，建立跟骨推算身高的回归方程。方法应用数字X线摄影方法，在393例（男性174例，女性219例）活体（四川汉族成年人）跟骨侧位DR片上测量5项长度指标，同时测量其身高。通过各项长度测量指标与身高的线性回归分析，建立跟骨推算身高的回归方程；并对所建方程进行身高预测值与实际值的配对t检验、残差分析、等方差性检验及共线性检验。结果共建立有统计学意义的一元回归方程10个，多元回归方程3个。回归方程的复相关系数（R）在0．653～0．218范围内，身高估计值标准误（SE）在4．59～6．68cm范围。结论本研究所建立的身高推算方程，可作为四川汉族人群跟骨推算身高的依据。

Objective To establish the calcaneus in the lateral films of digital radiography regression equations for stature estimation based on the （DR） ,a study has been done. Methods First, 5 dimensions was measured in the lateral films of the calcanues including 174 male and 219 female adults of Sichuan Han population, as well as the body height of each subject was recorded. Then, linear regression analysis between the each dimensions and stature was done to establish the equations for stature estimation. In addition, to all the obtained equations, the paired t-test between the predictive value and the recorded body height, the residual analysis, the tests of equal scedasticity and colinearity had been done. Results 10 regression equations and 3 multiple regressions equations of which were statistical significance were obtained. The coefficient of multiple correlation （R） was from 0. 653 - 0. 218 and the standard error of estimate （SE） was between 4.59 - 6.68cm. Conclusion All the equations obtained in this study could be helpful for stature estimation in the Han population of Sichuan.