Table 1.
The children’s characteristics.
Values are mean (SD) if not otherwise stated.
Table 2.
Reliability for single days of measurement (ICCs) and number of days needed to achieve a reliability of 0.80 (N) for the two weeks (winter and spring).
Fig 1.
Bland Altman plots of agreement for different outcome variables over two weeks of measurement performed in the winter and spring, 3 to 4 months apart.
Bland Altman plots (the mean of two weeks of measurement on the x-axis versus the difference between them on the y-axis) for (a) overall physical activity (cpm), and minutes per day spent (b) sedentary (SED), (c) in light physical activity (LPA), (d) in moderate physical activity (MPA), (e) in vigorous physical activity (VPA), and (f) in moderate-to-vigorous physical activity (MVPA). Results are based on a ≥ 8 hours & ≥ 3 days wear time criterion (n = 615). The full line is the bias between weeks, whereas the dotted lines are 95% limits of agreement corrected for wear time and season.
Table 3.
The week-by-week reproducibility for different outcome variables for two weeks of measurement.
Table 4.
The week-by-week reliability for different outcome variables for two weeks of measurement.