Bland Altman plots of measurement variability for different outcome variables.

<p>Bland Altman plots (the difference between two weeks of measurement on the y-axis versus the mean of the two weeks on the x-axis) for wear time (a); average counts per minute (CPM) from the vertical axis (b) and the vector magnitude (VM CPM) (c); absolute time spent sedentary (SED) (d), light physical activity (LPA) (e) and moderate-to-vigorous physical activity (MVPA) (f); percentage time in SED (g), LPA (h) and MVPA (i). Results are based on a ≥10 hours & ≥4 days wear time criteria. Filled dots are week 1–week 2 (n = 59); open squares are week 1–week 3 (n = 53)95% limits of agreement are indicated as dotted lines.