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Figure 3 | BMC Public Health

Figure 3

From: Assessment of physical activity in older Belgian adults: validity and reliability of an adapted interview version of the long International Physical Activity Questionnaire (IPAQ-L)

Figure 3

Difference between self-reported MVPA and Copeland MVPA for each quartile of Copeland MVPA. Legend: MVPA = moderate-to-vigorous physical activity; Copeland MVPA = weekly minutes of accelerometer-derived moderate-to-vigorous physical activity ≥1041 counts.min−1; Q1 = first quartile; Q2 = second quartile; Q3 = third quartile; Q4 = fourth quartile. y-axis represent differences between self-reported MVPA and Copeland MVPA, expressed as a percentage; x-axis represent quartiles of Copeland MVPA. Full lines represent median (M) percentage of difference, dotted lines show the 90% nonparametric limits of agreement (LOA), representing 5th and 95th percentiles (P5 and P95): Q1: M = 297.1; P5 = −100.0 (95% CI for P5: −100.0 - -100.0); P95 = 2311.6 (95% CI for P95: 1490.8 – 3034.4); Q2: M = 111.6; P5 = −100.0 (95% CI for P5: −100.0 - -95.9); P95 = 646.3 (95% CI for P95: 529.2 – 882.0); Q3: M = 84.5; P5 = −78.3 (95% CI for P5: −−96.0 - -49.4); P95 = 391.5 (95% CI for P95: 317.3 – 439.2); Q4: M = 16.4; P5 = −82.5 (95% CI for P5: −92.8 - -68.9); P95 = 219.7 (95% CI for P95: 159.3 – 249.0).

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