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Table 3 Weighted Kappa coefficients for baseline quintiles and follow-up quintiles of physical activity levels. Pooled analysis

From: Tracking of accelerometry-measured physical activity during childhood: ICAD pooled analysis

  MVPA VPA
Boys Girl Boys Girl
  Weighted kappa (95% confidence interval)
Weekday/weekend combined 0.28 (0.25, 0.30) 0.25 (0.22, 0.28) 0.27 (0.25, 0.30) 0.23 (0.21, 0.26)
Weekday 0.24 (0.21, 0.27) 0.24 (0.21, 0.26) 0.24 (0.21, 0.27) 0.22 (0.19, 0.24)
Weekend 0.22 (0.19, 0.25) 0.16 (0.13, 0.19) 0.18 (0.15, 0.21) 0.15 (0.12, 0.18)
  1. MVPA, moderate- to vigorous-intensity physical activity; VPA, vigorous-intensity physical activity.
  2. All analyses were weighted based on the sample size of each cohort.
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