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Table 2 Validity of HAPAQ: HAPAQ-derived physical activity measurements, Spearman and intraclass correlations with objective physical activity measurements and the median biases from agreeement analysis

From: Validation of the historical adulthood physical activity questionnaire (HAPAQ) against objective measurements of physical activity

  HAPAQ-derived measurements Spearman correlation Intraclass correlation coefficientc HAPAQ biases
  Median IQR    Median IQR
Proportion time spent in VPA (%) 0.01 1.32 0.40*** 0.24** -0.26 1.59
Total reported PAEE (kJ/min)a 2.91 2.66 0.44*** 0.01 -2.80 4.24
Total reported PAEE (kJ/min)b 5.90 2.28 0.48*** 0.39*** -0.16 3.50
  1. * P < 0.05
  2. ** P < 0.01
  3. *** P < 0.0001
  4. VPA: Vigorous physical activity
  5. PAEE: Physical activity energy expenditure
  6. IQR: Interquartile range
  7. aexcluding housework from PAEE
  8. bas per a with remaining time designated as light activity (MET 1.5)
  9. cVariables were log-transformed