Fig. 3

Limits of agreement with Bland-Altman plots for the total scores for IPAQ-SF and PASE. Legend: Each dot visualizes the difference in two measurements (test and retest; y-axis) from the same individual, and in relation to the average value of the two measurements (x-axis) for this individual. The mid horizontal line is drawn at the mean difference, which is the estimated bias. The lines above and below represent the upper and lower limits of agreement (defined as the mean difference +/− 1.96 x SD of the differences). The results for IPAQ-SF are presented as the sum of MET-minutes/week (higher values = more vigorous physical activity). The total PASE score can range from 0 to 360 (or above, higher values = more vigorous physical activity). IPAQ-SF, International Physical Activity Questionnaire, short form; LoA, limit of agreement; PASE, Physical Activity Scale for the Elderly; SD, standard deviation