Chávez-Martínez Perla, Ortega-Palma Albertina, Castrejón-Caballero José Luis, Arteaga-Martínez Manuel
National School of Antropologia and History, Zapote s/n, Isidro Fabela, Tlalpan, Mexico, D.F., Mexico.
Physical Anthropology Department. National School of Antropologia and History, Zapote s/n, Isidro Fabela, Tlalpan, Mexico, D.F., Mexico.
Forensic Sci Int. 2016 Sep;266:587.e1-587.e10. doi: 10.1016/j.forsciint.2016.04.011. Epub 2016 May 6.
Metric standards are presented for the estimation of fetal age at the time of death in the Mexican population. To obtain these standards, both metric and radiological studies were conducted on 97 fetuses and complete stillborn infants of both sexes, phenotypically normal between 10 and 38 weeks of morphological age. All the fetuses used were the product of spontaneous abortions in Mexico City between 1990 and 2000. Equations were obtained by calibrating quadratic linear regression models adjusted for the diaphyseal length of the humerus, radius, ulna, femur, tibia and fibula, characterized as the most adequate indicators to represent the growth of long bones in this age group, and verified by the evaluation of the model assumptions and the coefficient of determination (R(2)). To conclude, these models facilitate a more precise prediction in fetuses of the Mexican population, constituting the first metric standards of their type at a national level.
本文提出了用于估算墨西哥人群死亡时胎儿年龄的度量标准。为了获得这些标准，对97例胎儿及完整的死产婴儿进行了度量和放射学研究，这些胎儿及婴儿均为两性，形态学年龄在10至38周之间，表型正常。所有使用的胎儿均为1990年至2000年间墨西哥城自然流产的产物。通过校准二次线性回归模型获得方程，该模型针对肱骨、桡骨、尺骨、股骨、胫骨和腓骨的骨干长度进行了调整，这些骨干长度被认为是代表该年龄组长骨生长的最适当指标，并通过对模型假设和决定系数（R²）的评估进行了验证。总之，这些模型有助于对墨西哥人群的胎儿进行更精确的预测，构成了该国首个此类度量标准。
