Table 2.
Descriptive statistics of variables measured in 92 patients with chronic low back pain
| Variable | n | Mean (SD) |
|---|---|---|
| Psychological variables | ||
| SCL-90-R | 86 | 123.3 (26.6) |
| BDI | 82 | 7.3 (5.7) |
| ALCOS-SF | 88 | 69.6 (9.1) |
| SES | 86 | 33.5 (4.2) |
| TSK | 85 | 36.4 (5.6) |
| PCL | ||
| Pain impact | 70 | 43.8 (8.0) |
| Catastrophizing | 71 | 40.2 (11.4) |
| Outcome efficacy | 71 | 20.2 (4.0) |
| Acquiescence | 69 | 8.9 (2.5) |
| Reliance on health care | 71 | 19.2 (3.4) |
| UCL | ||
| Palliative reaction | 73 | 17.0 (3.0) |
| Active coping | 71 | 18.3 (2.8) |
| Social support | 73 | 12.7 (2.9) |
| Avoidance | 73 | 15.2 (2.5) |
| Expression of emotionsa | 73 | 6 (5–6.5) |
| Passive copinga | 73 | 10 (9–11.5) |
| Coping self statements | 73 | 11.9 (2.7) |
| Disability | ||
| Lifting performance (kg) | 92 | 27.8 (14.7) |
| Men | 60 | 32.5 (15.4) |
| Women | 32 | 18.8 (7.8) |
| Carrying performance (kg) | 88 | 31.8 (16.4) |
| Men | 56 | 35.9 (17.4) |
| Women | 32 | 24.4 (11.4) |
| Forward bending performance (s)a | 91 | 156 (108–273) |
| Mena | 59 | 173 (86–273) |
| Womena | 32 | 149 (115–278) |
| RMDQ | 92 | 12.6 (4.8) |
| Men | 60 | 12.7 (5.0) |
| Women | 32 | 12.5 (4.5) |
SCL-90-R Symptom Checklist-90- Revised, BDI Beck Depression Inventory, ALCOS-SF General Self Efficacy Scale-Short Form, SES Rosenberg Self Esteem Scale, TSK Tampa Scale of Kinesiophobia, PCL-E Pain Cognition List, experimental version, UCL Utrecht’s Coping List, RMDQ Roland Morris Disability Questionnaire
aDue to a skewed distribution, median and interquartile range are presented