Shi Ge-Fei, Lie Rui-Jue, Tao Jiang, Fan Li-Hua, Zhu Guang-You
Shanghai Key Laboratory of Forensic Medicine, Institute of Forensic Science, Ministry of Justice, Shanghai 200063, PR China.
Fa Yi Xue Za Zhi. 2009 Jun;25(3):168-71.
To study the applicability of Demirjian's method for age estimation in teenagers of Shanghai Han population in China.
Paired t-test was performed between the chronological age and the age determined by Demirjian's method of 501 teenagers whose orthopantomograms were collected from the ninth hospital of Shanghai. There were 168 boys and 333 girls involved in this study with chronological age from 11 to 20 years. Uni-factor model was used to explore the relationships of the two kinds of age.
For the marked difference between the chronological age and determined age, Demirjian's method was not suitable to the Chinese Han adolescents. The results of paired t-test between chronological age and predicted age from quadratic equation showed that there was no significant difference in boys aged 12-16 years, in girls aged 12-14 years and 15-17 years repectively. The uni-factor model could make the error of determined age less than 1 year to 81.04% of the samples.
The age between 11 and 17 years can be well estimated by our method, except for the 17 years of age and above.
研究Demirjian法在中国上海汉族青少年年龄估计中的适用性。
对从上海第九人民医院收集的501名青少年的曲面体层片，采用配对t检验比较其实际年龄与用Demirjian法确定的年龄。本研究纳入168名男孩和333名女孩，实际年龄为11至20岁。采用单因素模型探讨两种年龄之间的关系。
由于实际年龄与确定年龄之间存在显著差异，Demirjian法不适用于中国汉族青少年。对实际年龄与二次方程预测年龄进行配对t检验的结果显示，12至16岁的男孩、12至14岁和15至17岁的女孩之间无显著差异。单因素模型可使81.04%的样本确定年龄误差小于1岁。
除17岁及以上年龄外，11至17岁的年龄可用我们的方法较好地估计。
