Criterion validity of The International Physical Activity Questionnaire-Short Form (IPAQ-SF) for use in clinical practice in patients with osteoarthritis

Table 2 Physical activity values assessed by IPAQ-SF and accelerometer, including p-values for differences (n = 93)

	IPAQ-SF	Accelerometer	Mean difference (95% CI)	Difference p-value
PA guidelines^*, n (%)
Proportion fulfilling PA guidelines	53 (57.0)	29 (31.2)		0.043^c
PA levels, median (IQR)
Total PA MET-minutes, per week	1985 (898, 4217) ^a	4059 (2712, 5467)	− 1616 (− 2096, − 1137)	< 0.001 ^d
MVPA MET-minutes, per week	780 (120,1680)	238 (45, 648)	775 (445, 1104)	< 0.001 ^d
MVPA-minutes, per week	180 (30, 300)	60 (11, 162)	118 (53, 183)	< 0.001 ^d
Vigorous PA, minutes per week	15 (0, 120)	0 (0, 0)	70 (45, 96)	- ^e
Moderate PA, minutes per week	90 (0, 210)	60 (11, 162)	53 (−1, 107)	0.272 ^d
Walking/light PA, minutes per week	245 (105, 630) ^a	1101 (711, 1475)	− 729 (− 865, − 593)	< 0.001 ^d
Sitting/sedentary time, hours per weekday	6.0 (4.0, 10.0) ^b	8.9 (7.8, 10.0)	−1.8 (−2.5, − 1.1)	< 0.001 ^d

95% CI, 95% confidence interval; IPAQ-SF The International Physical Activity Questionnaire-Short Form; MVPA moderate to vigorous intensity physical activity; MET Metabolic Equivalent of Task.
Data given in frequency (percent) for ‘Proportion fulfilling PA guidelines’ and median (interquartile range, IQR) for ‘PA levels’.
*Fulfilling PA guidelines, ≥150 min of MVPA or ≥ 75 min of vigorous PA per week

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