Research Article
Pain Behaviour Scale (PaBS): An Exploratory Study of Reliability and Construct Validity in a Chronic Low Back Pain Population
Table 1
Components of physical performance tests and PaBS descriptive data as rated by raters R1 and R2.
| | | First session | Second session | Mean difference (95% CI) | t | value | | Mean (SD) | Mean (SD) |
| | Trunk flexion (s) | 23.5 (9.5) | 26.6 (18.5) | −3 (−8.0 to 1.8) | −1.31 | 0.20 | | Sit to stand (s) | 13.7 (3.5) | 14.0 (4.6) | −0.2 (−1.8 to 1.7) | −0.32 | 0.76 | | Timed up and go (s) | 9.0 (2.4) | 9.1 (2.2) | −0.08 (−0.7 to 0.5) | −0.27 | 0.79 | | Loaded reach (cm) | 23.2 (7.3) | 23.0 (7.4) | 0.09 (−1.8 to 1.9) | 0.09 | 0.92 | | 50-foot walk (s) | 13.0 (4.2) | 13.0 (3.8) | 0.01 (−0.5 to 0.5) | 0.02 | 0.98 | | Trunk flexion | | | | | | | R1 | 1.0 (1.0) | 1.0 (1.0) | | | | | R2 | 1.0 (0.8) | NA | −0.1 (−0.3 to 0.07) | −1.4 | 0.19 | | Sit to stand | | | | | | | R1 | 0.5 (0.7) | 0.5 (0.9) | | | | | R2 | 0.5 (0.7) | NA | 0 (−0.2 to 0.2) | 0.00 | 1.00 | | Timed up and go | | | | | | | R1 | 0.3 (0.6) | 0.5 (0.9) | | | | | R2 | 0.4 (0.7) | NA | −0.1 (−0.3 to .0) | −1.8 | 0.08 | | Loaded reach | | | | | | | R1 | 1.2 (0.5) | 1.1 (0.5) | | | | | R2 | 1.2 (0.5) | NA | 0.1 (−0.1 to 0.3) | 0.81 | 0.43 | | 50-foot walk | | | | | | | R1 | 0.5 (0.8) | 0.4 (0.8) | | | | | R2 | 0.5 (0.8) | NA | 0.1 (−0.1 to 0.3) | 1.4 | 0.19 | | Pain behaviour | | | | | | | Total PaBS1 | 3.5 (2.8) | 3.6 (3.4) | −0.05 (−0.6 to 0.6) | −0.16 | 0.88 |
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s, second; R1, rater 1; R2, rater 2; PaBS1, Pain Behaviour Scale scores as rated by R1 in the first and second sessions; NA, not applicable.
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