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Table 4 Test-retest reliability based on intraclass correlation coefficients (ICC) for the WHO HBSC questionnaire and the IPAQ

From: Reliability and validity of two frequently used self-administered physical activity questionnaires in adolescents

Questionnaire All (n = 71) Girls (n = 40) Boys (n = 31) 13–15 years (n = 42) 16–18 years (n = 29)
  ICC 95% CI ICC 95% CI ICC 95% CI ICC 95% CI ICC 95% CI
WHO HBSC questionnaire           
   Frequency 0.73 0.60–0.82 0.87* 0.77–0.93 0.59 0.31–0.78 0.71 0.53–0.83 0.76 0.55–0.88
   Duration 0.71 0.57–0.81 0.76 0.58–0.86 0.66 0.40–0.83 0.62# 0.39–0.78 0.85 0.70–0.93
IPAQ           
   Vigorous activity (days/week) 0.54 0.34–0.69 0.55 0.29–0.73 0.53 0.22–0.75 0.46 0.18–0.67 0.65 0.37–0.82
   Vigorous activity (min/day) 0.30 -0.07–0.56 0.57 0.20–0.80 0.24 -0.21–0.62 0.46 0.05–0.74 0.23 -0.23–0.61
   Moderate activity (days/week) 0.55 0.36–0.70 0.58 0.33–0.75 0.53 0.21–0.75 0.57 0.32–0.74 0.53 0.20–0.75
   Moderate activity (min/day) 0.34 0.22–0.60 0.36 -0.06–0.67 0.33 -0.20–0.72 0.67 0.25–0.88 0.21 -0.21–0.57
   Walking (days/week) 0.62 0.45–0.75 0.53* 0.27–0.72 0.77 0.56–0.89 0.81# 0.67–0.90 0.37 0.01–0.65
   Walking (min/day) 0.10 -0.10–0.39 0.06 -0.33–0.44 0.11 -0.35–0.54 0.11 -0.30–0.49 0.07 -0.36–0.49
   Sitting (min/per day) 0.27 -0.50–0.54 0.18 -0.22–0.54 0.43 -0.09–0.77 0.32 -0.13–0.67 0.03 -0.41–0.46
  1. ICC = Single measure intraclass correlation coefficient
  2. * Significant difference between genders (p < 0.05)
  3. # Significant difference between age groups (p < 0.05)