Pain Behaviour Scale (PaBS): An Exploratory Study of Reliability and Construct Validity in a Chronic Low Back Pain Population

Table 3

Results of interrater and intrarater reliability for the severity of pain behaviour and test-retest reliability of component physical performance tests.

Test	Interrater reliability for PaBS	Intrarater reliability for PaBS	Test-retest of component physical performance tests
	ICC (95% CI)	ICC (95% CI)	ICC (95% CI)
Total score	1.0 (0.9 to 1.0)	0.9 (0.8 to 1.0)	NA
Trunk flexion (s)	0.9 (0.8 to 1.0)	0.9 (0.7 to 0.9)	0.7 (0.4 to 0.9)
Sit to stand (s)	1.0 (0.9 to 1.0)	0.8 (0.5 to 0.9)	0.6 (0.3 to 0.8)
Timed up and go (s)	0.9 (0.9 to 1.0)	0.9 (0.8 to 1.0)	0.8 (0.6 to 0.9)
Loaded reach (cm)	0.8 (0.5 to 0.9)	0.4 (0.3 to 0.7)	0.8 (0.6 to 0.9)
50-foot walk (s)	0.9 (0.8 to 1.0)	0.8 (0.6 to 0.9)	1.0 (0.9 to 1.0)

All ICC values were significant at .