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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