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Table 2 Descriptive statistics for reliability of self-reported measures of physical activity across specified time periods

From: A systematic literature review of reviews on techniques for physical activity measurement in adults: a DEDIPAC study

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
  1. ICC Intraclass Correlation Coefficient, NA No data Available