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Table 3 Comparison between self-reported and objectively measured physical activity (min/week)

From: Validation of the NPAQ-short – a brief questionnaire to monitor physical activity and compliance with the WHO recommendations

  n Cohen’s kappa (к)b 95% CI
MVPA Objectively measured vs. self-report closed-ended question 92 0.17 0.07;0.30
Objectively measured vs. self-report open-ended question (categorized)a 92 0.20 0.07;0.36
VPA Objectively measured vs. self-report closed-ended question 89 0.21 0.08;0.37
Objectively measured vs. self-report open-ended question (categorized)a 89 0.20 0.06;0.34
  1. Cohen’s Kappa (к) with 95% Confidence Interval (CI). Objectively measured activity has been categorized into closed-ended categories in order to calculate agreement
  2. aOpen-ended questions categorized into closed-ended categories to enable comparison
  3. bWeighted Kappa