Table 2.
Correlation coefficient of various psychological evaluation and patient-reported outcomes
| Variable | RDQ | JOABPEQ |
ZCQ |
|||||
|---|---|---|---|---|---|---|---|---|
| Pain related disorder | Lumbar dysfunction | Gait disturbance | Social life dysfunction | Physical function | Severity of symptoms | |||
| SRQ-D | 0.39 | -0.33 | -0.31 | -0.26 | -0.28 | 0.21 | -0.14 | |
| PCS | ||||||||
| Total score | 0.27 | -0.15 | -0.21 | -0.25 | -0.22 | 0.25 | -0.14 | |
| Escape/avoidance | 0.35 | -0.24 | -0.26 | -0.24 | -0.28 | 0.19 | -0.16 | |
| Fear | 0.24 | -0.13 | -0.23 | -0.18 | -0.19 | 0.22 | -0.13 | |
| HADS | ||||||||
| Anxiety | 0.26 | -0.18 | -0.31 | -0.17 | -0.21 | 0.26 | -0.18 | |
| Depression | 0.32 | -0.26 | -0.35 | -0.24 | -0.32 | 0.22 | -0.14 | |
| BS-POP | ||||||||
| Doctor | 0.13 | -0.8 | -0.14 | -0.6 | -0.11 | 0.12 | -0.18 | |
| Patient | 0.37 | -0.38 | -0.34 | -0.23 | -0.27 | 0.2 | -0.12 | |
p<0.05 and p<0.01 are statistically significant.
RDQ, Roland–Morris Disability Questionnaire; JOABPEQ, Japanese Orthopedic Association Back Pain Evaluation Questionnaire; ZCQ, Zurich Claudication Questionnaire; SRQ-D, Self-rating Questionnaire of Depression; PCS, Pain Catastrophizing Scale; HADS, Hospital Anxiety and Depression Scale; BS-POP, Brief Scale for Psychiatric Problems in Orthopedic Patients.