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Table 4 Average time (in minutes per day) spent on physical activity measured by the IPAQ-C and ActiGraph, and differences between the two measurements, by level of activity and respondent characteristics

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

   Moderate intensity activity per day Vigorous intensity activity per day Metabolic equivalent task per week✩
   IPAQ-C# ActiGraph# Difference† IPAQ-C# ActiGraph# Difference† IPAQ-C# ActiGraph# Difference†
Sex           
  Male 137.7 (147.5) 45.2 (23.9) 92.4*** (6.1) 17.4 (51.5) 1.3 (3.4) 16.1*** (2.1) 4290.5 (5124.8) 1339.6 (736.7) 2950.9*** (209.9)
  Female 153.4 (178.0) 42.1 (23.9) 111.3*** (6.7) 9.6 (40.7) 1.0 (2.8) 8.5*** (1.6) 4216.6 (4996.1) 1237.1 (717.8) 2979.5*** (188.2)
Age, years          
  ≤29 150.0 (157.0) 39.1 (20.8) 110.9*** (10.3) 17.7 (39.9) 1.4 (3.2) 16.3*** (2.6) 4556.9 (4674.1) 1171.2 (635.7) 3385.8*** (305.8)
  30-49 143.6 (173.5) 43.8 (22.3) 99.8*** (6.9) 11.8 (45.0) 1.00 (2.7) 10.8*** (1.8) 4118.9 (5139.1) 1282.2 (679.5) 2836.7*** (203.0)
  ≥ 50 147.9 (155.4) 45.7 (27.4) 102.2*** (7.5) 12.8 (50.9) 1.3 (3.6) 11.5*** (2.5) 4279.5 (5132.5) 1351.8 (835.2) 2927.7*** (248.6)
Full-time worker          
  Yes - high PD 253.9 (233.2) 57.7 (33.2) 196.2*** (22.1) 57.7 (33.2) 1.0 (2.6) 56.3*** (10.6) 9384.4 (8721.6) 1671.8 (966.3) 7712.6*** (835.3)
  Yes - low PD 142.5 (174.2) 44.3 (21.7) 98.2*** (6.9) 8.7 (32.9) 1.0 (2.8) 7.7*** (1.3) 3904.9 (4834.3) 1297.4 (664.7) 2607.6*** (191.1)
  Not full-time 130.2 (125.6) 40.1 (23.2) 90.1*** (5.6) 10.0 (32.9) 1.3 (3.5) 8.6*** (1.4) 3679.3 (3580.6) 1196.2 (723.3) 2483.2*** (158.6)
Tertiary education          
  Yes 107.0 (126.0) 42.7 (20.0) 64.2*** (7.4) 9.0 (22.6) 1.1 (2.9) 7.9*** (1.3) 3062.4 (3595.4) 1258.6 (599.1) 1803.9*** (208.4)
  No 157.8 (173.8) 43.7 (25.1) 114.1*** (5.6) 14.4 (51.5) 1.2 (3.2) 13.2*** (1.7) 4601.9 (5386.8) 1290.3 (766.8) 3311.7*** (174.0)
BMI           
  Overweight (≥ 25) 152.9 (174.1) 44.5 (24.6) 108.4*** (8.6) 13.0 (42.2) 1.2 (3.4) 11.8*** (2.1) 4411.7 (5339.2) 1315.0 (771.6) 3096.7*** (263.5)
  Normal (< 25) 143.4 (160.5) 43.1 (23.6) 100.3*** (5.4) 13.3 (47.9) 1.1 (2.9) 12.2*** (1.6) 4187.3 (4923.9) 1270.5 (706.4) 2916.8*** (165.4)
VFL, %           
  Overweight (≥ 10) 134.9 (150.4) 47.9 (25.9) 87.1*** (7.9) 14.6 (51.2) 1.4 (3.7) 13.2*** (2.8) 4063.8 (5231.5) 1416.8 (811.1) 2647.0*** (274.5)
  Normal (< 10) 150.2 (170.2) 42.6 (23.2) 107.6*** (5.8) 11.8 (44.7) 1.0 (2.7) 10.8*** (1.6) 4271.6 (5044.0) 1251.4 (693.5) 3020.2*** (172.9)
  1. PD: physical demand
  2. ✩ 8*vigorous min + 4*moderate min, IPAQ: 8*vigorous min + 4*moderate min + 3.3*walking min
  3. # Data are presented as mean (standard deviation).
  4. † Data are presented as mean (standard error).
  5. * P < 0.05.
  6. ** P < 0.01.
  7. *** P < 0.001.