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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4.59~6.68 cm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 measure the related length index of digital radiography (DR) on the calcaneal lateral calcaneus and establish the regression equation of calcaneal height. Methods The digital radiography was used to measure the length of 5 items in 393 cases (174 males and 219 females) of living (siblings of Sichuan Han) calcaneus lateral DR, and their height were measured. Through the linear regression analysis of each length measurement index and height, the regression equation of calcaneal height was established. The paired t-test, residual analysis, equal variance test and collinearity test. Results A total of 10 statistically significant univariate regression equations and 3 multiple regression equations were established. The regression equation has a complex correlation coefficient (R) in the range of 0.653-0.218 and a standard error in height (SE) in the range of 4.59-6.68 cm. Conclusion The height estimation equation established in this study can be used as the basis for calculating the height of calcaneus in Sichuan Han nationality.