Validity of self-reported weight and height: a cross-sectional study among Malaysian adolescents
| Autor: | M. G. Sumarni, C. H. Teh, Y. Ahmad Faudzi, Y. Y. Chan, E. O. Tee, M. I. Nuur Hafizah, M. Amal Nasir, Yong Kang Cheah, Chee Cheong Kee, Kuang Hock Lim |
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| Rok vydání: | 2017 |
| Předmět: |
Male
Rural Population 0301 basic medicine Adolescent Urban Population Epidemiology Intraclass correlation Cross-sectional study Health Informatics Self reported weight Adolescents Body Mass Index Validity 03 medical and health sciences 0302 clinical medicine Cohen's kappa Statistics Humans Medicine 030212 general & internal medicine lcsh:R5-920 030109 nutrition & dietetics Risk behaviour Height business.industry Data Collection Body Weight Limits of agreement Malaysia Reproducibility of Results Weight Body Height Confidence interval Cross-Sectional Studies Female Self Report lcsh:Medicine (General) business Self-report Body mass index Research Article |
| Zdroj: | BMC Medical Research Methodology BMC Medical Research Methodology, Vol 17, Iss 1, Pp 1-8 (2017) |
| ISSN: | 1471-2288 |
| Popis: | Background Self-reported weight and height are commonly used in lieu of direct measurements of weight and height in large epidemiological surveys due to inevitable constraints such as budget and human resource. However, the validity of self-reported weight and height, particularly among adolescents, needs to be verified as misreporting could lead to misclassification of body mass index and therefore overestimation or underestimation of the burden of BMI-related diseases. The objective of this study was to determine the validity of self-reported weight and height among Malaysian secondary school children. Methods Both self-reported and directly measured weight and height of a subgroup of 663 apparently healthy schoolchildren from the Malaysian Adolescent Health Risk Behaviour (MyAHRB) survey 2013/2014 were analysed. Respondents were required to report their current body weight and height via a self-administrative questionnaire before they were measured by investigators. The validity of self-reported against directly measured weight and height was examined using intraclass correlation coefficient (ICC), the Bland-Altman plot and weighted Kappa statistics. Results There was very good intraclass correlation between self-reported and directly measured weight [r = 0.96, 95% confidence interval (CI): 0.93, 0.97] and height (r = 0.94, 95% CI: 0.90, 0.96). In addition the Bland-Altman plots indicated that the mean difference between self-reported and direct measurement was relatively small. The mean difference (self-reported minus direct measurements) was, for boys: weight, −2.1 kg; height, −1.6 cm; BMI, −0.44 kg/m2 and girls: weight, −1.2 kg; height, −0.9 cm; BMI, −0.3 kg/m2. However, 95% limits of agreement were wide which indicated substantial discrepancies between self-reported and direct measurements method at the individual level. Nonetheless, the weighted Kappa statistics demonstrated a substantial agreement between BMI status categorised based on self-reported weight and height and the direct measurements (kappa = 0.76, 95% CI: 0.67, 0.84). Conclusion Our results show that the self-reported weight and height were consistent with direct measurements and therefore can be used in assessing the nutritional status of Malaysian school children from the age of 13 to 17 years old in epidemiological studies and for surveillance purposes when direct measurements are not feasible, but not for assessing nutritional status at the individual level. |
| Databáze: | OpenAIRE |
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