Table 4 Mean bias of the APCAPS-PAQ for physical activity measured in the APCAPS-PAQ and by the Actiheart in free-living adults

 Questionnaire^a

65.8 (25.8)

70.6 (26.2)

60.0 (24.1)

 Mean bias^b

10.6 (1.7)

9.9 (2.6)

11.4 (2.1)

 p

<0.001

0.002

<0.001

Sedentary

 Questionnaire^a

847 (206)

791 (188)

916 (207

 Mean bias^b

−48 (14.6)

−68 (20.4)

−23 (20.5)

 p

0.001

0.001

0.26

Light

 Questionnaire^a

395 (162)

418 (165)

366 (154)

 Mean bias^b

−63 (12.4)

−60 (17.7)

−66 (17.2)

 p

<0.001

<0.001

<0.001

MVPA

 Questionnaire^a

139 (151)

179 (145)

101 (152)

 Mean bias^b

105 (8.9)

118 (12.3)

89 (12.8)

 p

<0.001

<0.001

<0.001