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结果:6个部位所测骨矿物质含量(x±SD)分别为:腰椎0.99±0.20g/cm~2,股骨颈0.75±0.15,Ward’s三角区0.62±0.18,大转子0.62±0.15,桡骨0.56±0.11,尺骨0.53±0.12。腰椎的值最高,反映在这一部位骨的最大深度,其次为股骨颈、Ward’s三角区、大转子、桡骨和尺骨。Ward’s三角区和大转子的测定结果基本相同,桡骨和尺骨的骨矿物质含量也接近一致。上述所有测定的标准差从0.11至0.20g/cm~2,腰椎的矿化作用变化最大,而桡骨变化最小。对所有各组测定结果之间进行线性回归处理,其P值均<0.001,差异有显著意义,不同方法的测定显示了不同的相关性,范围从尺骨-腰椎和尺骨-大转子的r=0.40到股骨颈-Ward’s三角区的r=0.93。然而,根据线性回归的准确预测不仅需要二个测定的变量之间的紧密关系,而且需要观察到密
Results: The bone mineral content (x ± SD) in 6 sites were 0.99 ± 0.20 g / cm ~ 2 for lumbar spine, 0.75 ± 0.15 for femoral neck, 0.62 ± 0.18 for Ward’s trigone, 0.62 ± 0.15 for greater trochanter and 0.56 for radius ± 0.11, ulna 0.53 ± 0.12. The lumbar spine had the highest values, reflecting the maximum depth of the bones in this area, followed by the femoral neck, Ward’s trigone, the greater trochanter, the radius, and the ulna. Ward’s triangle area and the greater trochanter measurement results are basically the same, radial and ulna bone mineral content are also close. The standard deviations of all the above measurements ranged from 0.11 to 0.20 g / cm ~ 2, the lumbar spine mineralization changed the most, and the radius changed the least. Linear regression analysis of all the test results showed that the P values were all <0.001, the difference was significant, and the determination of different methods showed different correlations, ranging from ulna - lumbar and ulnar - greater trochanter r = 0.40 R = 0.93 to the femoral neck-Ward’s triangle. However, accurate prediction based on linear regression not only requires a close relationship between the two measured variables but also requires close observation of the close