Benjumea María Victoria, Estrada Alejandro, Curcio Carmen Lucía
Grupo de Investigación Nutral, Universidad CES, Medellín, Colombia.
Biomedica. 2019 Dec 1;39(4):639-646. doi: 10.7705/biomedica.4820.
Introduction: The height in the elderly does not reflect their real size as young adults due to the aging of their spine, among other aspects. Objective: To estimate the equations to predict the height in Colombian elders according to their ethnic group and sex using the knee height measurement. Materials and methods: We conducted a secondary analysis of the SABE, 2015, crosssectional study using a multistage probabilistic sampling design in people aged 60 years and over in Colombia. We randomly selected two groups from the study’s database: A development group and a validation group of the equations. Age and anthropometric characteristics were similar in both groups. We performed a multiple linear regression analysis to predict the height using knee height measurement in the different ethnic groups (Indigenous, Afro-descendant, and white-mestizo groups) by age and sex; the results were validated in each selected subgroup. Results: We designed six equations by sex (men=3,665; women=3,019) and ethnic group. The adjusted R2 of the equations in men from the three ethnic groups oscillated between 64% and 75% and the standard errors, between 3,09 and 3,93 cm while in women, the R2s of the three equations ranged between 53% and 73% and the EEs, between 2,96 and 3,90 cm. Conclusion: The equation with the best predictive capacity of the height of Colombian elders was obtained for African descendants of both sexes. The lowest coefficients of determination were obtained for the indigenous population.
由于脊柱老化等因素，老年人的身高并不能反映他们年轻时的实际身高。目的：根据哥伦比亚老年人的种族和性别，利用膝高测量值来估计预测身高的方程。材料和方法：我们对2015年哥伦比亚老年人健康与老龄化研究（SABE）进行了二次分析，该研究采用多阶段概率抽样设计，对象为60岁及以上的人群。我们从研究数据库中随机选取两组：方程的开发组和验证组。两组的年龄和人体测量特征相似。我们进行了多元线性回归分析，以根据不同种族（原住民、非裔和白种混血群体）、年龄和性别的膝高测量值来预测身高；结果在每个选定的亚组中进行了验证。结果：我们按性别（男性=3665；女性=3019）和种族设计了六个方程。三个种族男性方程的调整R²在64%至75%之间波动，标准误差在3.09至3.93厘米之间；而女性的三个方程的R²在53%至73%之间，标准误差在2.96至3.90厘米之间。结论：在哥伦比亚老年人中，两性非裔后裔的身高预测方程具有最佳预测能力。原住民群体的决定系数最低。
