Zhang Kui, Dong Xiao-Ai, Fan Fei, Deng Zhen-Hua
Department of Forensic Pathology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, 610041, People's Republic of China.
Int J Legal Med. 2016 Jul;130(4):1143-1148. doi: 10.1007/s00414-016-1383-7. Epub 2016 May 12.
To establish regression models for age estimation from the combination of the ossification of iliac crest and ischial tuberosity. One thousand three hundred and seventy-nine conventional pelvic radiographs at the West China Hospital of Sichuan University between January 2010 and June 2012 were evaluated retrospectively. The receiver operating characteristic analysis was performed to measure the value of estimation of 18 years of age with the classification scheme for the iliac crest and ischial tuberosity. Regression analysis was performed, and formulas for calculating approximate chronological age according to the combination developmental status of the ossification for the iliac crest and ischial tuberosity were developed. The areas under the receiver operating characteristic (ROC) curves were above 0.9 (p < 0.001), indicating a good prediction of the grading systems, and the cubic regression model was found to have the highest R-square value (R (2) = 0.744 for female and R (2) = 0.753 for male). The present classification scheme for apophyseal iliac crest ossification and the ischial tuberosity may be used for age estimation. And the present established cubic regression model according to the combination developmental status of the ossification for the iliac crest and ischial tuberosity can be used for age estimation.
通过结合髂嵴和坐骨结节的骨化情况建立年龄估计的回归模型。回顾性评估了2010年1月至2012年6月期间四川大学华西医院的1379例常规骨盆X线片。采用受试者工作特征分析来评估根据髂嵴和坐骨结节分类方案估计18岁年龄的价值。进行了回归分析，并根据髂嵴和坐骨结节骨化的联合发育状态制定了计算近似实足年龄的公式。受试者工作特征（ROC）曲线下面积均大于0.9（p<0.001），表明分级系统预测良好，且发现三次回归模型的决定系数R²值最高（女性R² = 0.744，男性R² = 0.753）。目前的髂嵴骨骺和坐骨结节骨化分类方案可用于年龄估计。并且根据髂嵴和坐骨结节骨化联合发育状态建立的三次回归模型可用于年龄估计。
