Comparison of measured and estimated height in the elderly with different functional classifications

DOI: 10.15343/0104-7809.202044445453

Authors

  • Ann Kristine Jansen Universidade Federal de Minas Gerais – UFMG. Belo Horizonte/MG, Brasil.
  • Denise Angela Gonçalves dos Santos Universidade Federal de Minas Gerais – UFMG. Belo Horizonte/MG, Brasil.
  • Déborah de Oliveira Ramiro Hospital Risoleta Tolentino Neves. Belo Horizonte/MG, Brasil.
  • Rodrigo Ribeiro dos Santos Universidade Federal de Minas Gerais – UFMG. Belo Horizonte/MG, Brasil.

Keywords:

Height; Elderly; Fragility; Healthy aging.

Abstract

One of the effects of aging on the body is the reduction of height, which may overestimate the body mass index (BMI). It is
hypothesized that frail elderly people are more affected by this decline in height, however this is not clear in the literature.
The aim of this study was to compare the measured and estimated height and the BMI derived from measured and
estimated measurements, in the elderly according to the functional classification. A cross-sectional study with secondary
data was carried out with elderly people in outpatient care, classified as robust, at risk of fragility, and fragile. Estimated
height was calculated from knee height and estimated BMI with the estimated height. In the statistical analysis, ANOVA
test and the Hochberg's GT2 test were applied, when comparing the 3 categories of functionality. The sample consisted of
116 elderly people with a mean age of 83.6 (8.5), mostly women 73.0 (62.9%), and classified as robust 54.0 (46.6%). The
difference found for height was 4.2 (5.2), 4.6 (4.9), 7.1 (5.3) cm respectively for the robust, at risk of fragility, and fragile.
The difference between the robust and the fragile was significant (p=0.033). A similar result was obtained by assessing
the difference between BMIs (p=0.019). The study showed that frail elderly people have greater differences between
measured and estimated height, in comparison with robust people, suggesting that frail elderly people have more height
impairment, which can directly impact nutritional diagnosis. Caution is suggested in the use of measured height in the
elderly, particularly in the frail.

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Published

2020-07-01

How to Cite

Kristine Jansen, A. ., Denise Angela Gonçalves dos Santos, de Oliveira Ramiro, D. ., & Ribeiro dos Santos, R. . (2020). Comparison of measured and estimated height in the elderly with different functional classifications: DOI: 10.15343/0104-7809.202044445453. O Mundo Da Saúde, 44, 445–453. Retrieved from https://revistamundodasaude.emnuvens.com.br/mundodasaude/article/view/971