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Table 3 Spearman correlations of IPAQ-C and ActiGraph-measured physical activity by subgroup using ActiGraph time and count data

From: Performance of the international physical activity questionnaire (short form) in subgroups of the Hong Kong chinese population

   ActiGraph activity levels and measurements
   ActiGraph-min (moderate min) ActiGraph-min (vigorous min) ActiGraph-min ActiGraph-count
Respondent characteristics\IPAQ activity level Moderate Vigorous Total MET Total MET
Sex      
  Male 0.10* 0.23*** 0.14*** 0.18***
  Female 0.09* 0.09* 0.09* 0.15***
Age, years      
  ≤29 0.05 0.21*** 0.06 0.04
  30-49 0.09* 0.12** 0.12** 0.19***
  ≥ 50 0.12* 0.14** 0.15** 0.25***
Full-time worker      
  Yes - high PD 0.19* 0.25** 0.18* 0.16
  Yes - low PD 0.10* 0.10** 0.12** 0.20***
  Not full-time 0.06 0.21*** 0.07 0.08
Tertiary education      
  Yes 0.03 0.17** 0.09 0.08
  No 0.11*** 0.17*** 0.12*** 0.18***
BMI      
  Overweight (≥ 25) 0.10 0.22*** 0.14** 0.21***
  Normal (< 25) 0.09** 0.14*** 0.10** 0.14***
VFL, %      
  Overweight (≥ 10) 0.18*** 0.23*** 0.24*** 0.31***
  Normal (< 10) 0.08* 0.10** 0.09* 0.14***
  1. ActiGraph-min: time spent in moderate-to-vigorous physical activity (2 × minutes spent in vigorous activity + minutes spent in moderate-intensity activity, ActiGraph-count: raw counts in hours with any movement recorded, MET: metabolic equivalent task per week (8*vigorous min + 4*moderate min + 3.3*walking min), PD: physical demand
  2. * P < 0.05.
  3. ** P < 0.01.
  4. *** P < 0.001.