Retest-Reliabilität von Beurer Glas-Diagnosewaagen zur Messung des Body-Mass-Index

Objective: The purpose of this study was to evaluate the test-retest reliability of beurer glass diagnostic scale for measuring body mass index (BMI). Methods: A total of 80 healthy male subjects in the age group of 19–45 years were participated in this study. The age and height of each participant was added into the beurer glass diagnostic scale prior to the measurement of the BMI. Each participant was measured twice to establish test-retest reliability. To assess test-retest reliability, Intraclass Correlation Coefficient (ICC) and the Bland-Altman method was used. The level of significance was set at 5 % (p < 0.05). Results: The ICC values were significant and showed excellent magnitude (0.98–0.99) and no significant differences were found between the means of 2 measurement (p > 0.05). A strong positive correlation between BMI of glass scale and BMI calculation method (r = 0.994) and BMI of glass scale and body weight (r = 0.943) were noted. Conclusions: The results suggest that the beurer glass diagnostic scale is a reliable instrument for assessing BMI.