Table 2.

Concurrent validity of the Workplace Sitting Breaks Questionnaire (SITBRQ) against accelerometer-based measures ^*

Questionnaire item	Spearman’s rho (95% CI) †
Frequency of breaks (breaks/hour)	0.24 (0.07 - 0.40)
Total duration of breaks (minutes/day)	0.05 (−0.12 - 0.22)

*Accelerometer-based measures (total time in ≥100 cpm) were categorized to reproduce response scales of questionnaire items.

^†Spearman’s rank correlation between SITBRQ and accelerometer-based measures and its 95% confidence interval.