Fogal Aline Siqueira, Franceschini Sylvia do Carmo Castro, Priore Silvia Eloiza, Cotta Rosângela Minardi M, Ribeiro Andréia Queiroz
Departamento de Nutrição e Saúde, Universidade Federal de Viçosa, UFV. Centro Viçosa-MG. Brazil..
Nutr Hosp. 2014 Oct 16;31(2):829-34. doi: 10.3305/nh.2015.31.2.7618.
Stature is an important variable in several indices of nutritional status that are applicable to elderly persons. However, stature is difficult or impossible to measure in elderly because they are often unable to maintain the standing position. A alternative is the use of estimated height from measurements of knee height measure.
This study aimed to evaluate the accuracy of the formula proposed by Chumlea et al. (1985) based on the knee of a Caucasian population to estimate the height and its application in calculation of body mass index in community- dwelling older people residents in Viçosa, Minas Gerais, Brazil.
The sample included 621 elderly aged 60 years old and older, living in the community. Measures of weight, height and knee height (KH) were taken and Body Mass Index (BMI) was calculated with the measured weight and estimated. The Student`s t-test was used for comparison of measurements of height between the genders. For the comparison of estimated and measured values it was used paired t-test and also the methodology proposed by Bland and Altman to compare the difference between measurements. To evaluate the agreement between the classifications for BMI was used Cohen's Kappa.
The average values obtained from KH were higher than those measured in the whole sample and women. There underestimation of BMI in females and also in the whole.
The present results suggest that the equation Chumlea was not adequate to estimate the height of the sample in question, especially for women.
身高是适用于老年人的几个营养状况指标中的一个重要变量。然而，由于老年人往往无法保持站立姿势，所以测量身高很困难甚至无法测量。一种替代方法是通过测量膝高来估算身高。
本研究旨在评估Chumlea等人（1985年）提出的基于白种人膝盖的公式在估算巴西米纳斯吉拉斯州维索萨市社区居住的老年人身高方面的准确性及其在计算体重指数中的应用。
样本包括621名60岁及以上居住在社区的老年人。测量体重、身高和膝高（KH），并根据测量的体重和估算的身高计算体重指数（BMI）。使用学生t检验比较不同性别的身高测量值。对于估算值和测量值的比较，使用配对t检验以及Bland和Altman提出的方法来比较测量值之间的差异。为了评估BMI分类之间的一致性，使用了Cohen's Kappa。
从膝高获得的平均值高于整个样本和女性的测量值。女性以及总体的BMI均被低估。
目前的结果表明，Chumlea方程不足以估算所研究样本的身高，尤其是对于女性。
