Validity of height and weight self-report in Mexican adults: results from the national health and aging study.
J Nutr Health Aging
; 8(5): 355-61, 2004.
Article
em En
| MEDLINE
| ID: mdl-15359352
BACKGROUND: An adequate nutritional status is essential for maintaining the independence in the elderly. The height and weight self-report is considered a useful alternative for the estimation of body mass index (BMI). The validity of the self-report is an issue that has not been dealt with in developing countries. AIM: To assess the validity of the height and weight self-report in adults Mexican citizens. DESIGN: Transversal study. STUDY POPULATION: 1707 persons (836 males, 871 females) were asked for their height and weight and were measured. RESULTS: Mean (+/- standard deviation) age was 59.09 +/- 9.86 SD; mean years of education was 5.51 +/-4.67 years. We found a high correlation between self-reported and measured weight (R2= 0.837); the difference between both values rose along with the age (from 0.4 kg to 1.74 kg). A systematic difference between self-reported and measured height was found. Self-reported height was over-estimated, and the bias increased along with the age of the subjects (from 1.57 cm to 2.57 cm); further, over-estimation was larger in female individuals (+2.22 cm in female vs. +1.21 cm in male subjects). We calculated a linear model that predicts real height from self-reported height with moderate, although statistically significant results (R2= 0.39 y 0.50, for female and male, respectively, p < 0.0001). Knee height was also used to estimate "adulthood height" and thus, BMI. This method showed age-related dissimilarities, and the linear regression model yielded an unacceptably low correlation (R2= <0.10). The best method to estimate real BMI was to consider self-reported parameters. DISCUSSION: Height and weight estimation using self-reported parameters is an acceptable method. Its precision is not so high in subjects > 75 years. Height over-estimation is an expected finding congruent with age-related corporal changes. The estimation of height using knee height is not a useful method. CONCLUSION: Height and weight self-report is a valid method that may be used to accurately estimate height and weight in Mexican people.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Estatura
/
Peso Corporal
/
Autorrevelação
/
Envelhecimento
Tipo de estudo:
Observational_studies
/
Prevalence_studies
/
Prognostic_studies
Aspecto:
Patient_preference
Limite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
País/Região como assunto:
Mexico
Idioma:
En
Revista:
J Nutr Health Aging
Assunto da revista:
CIENCIAS DA NUTRICAO
/
GERIATRIA
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
França