Table 2 Descriptive statistics for reliability of self-reported measures of physical activity across specified time periods
Duration of recall | Correlation Coefficient | Kappa | ICC |
|---|---|---|---|
≤ 1 week | 0.25 – 0.99 | 0.32 – 0.87 | 0.30 – 0.99 |
1 – 4 weeks | 0.13 – 0.96 | 0.40 – 1.00 | 0.27 – 0.99 |
5 – 8 weeks | 0.41 – 0.99 | NA – 0.69 | NA |
≤ 1 year | 0.25 – 0.95 | 0.54 – 0.82 | 0.62 – 0.92 |
> 1 year | 0.17 – 0.41 | 0.20 – 0.85 | 0.14 – 0.93 |