Table 2 Contribution of classification variables to the separation of cluster (n = 634)
From: Chronic low back pain patient groups in primary care – A cross sectional cluster analysis
Variable | Fmax-value | Variable specific eta2 |
|---|---|---|
Age | 208.40 | 0.40 |
Number of persons at household | 39.18 | 0.12 |
Employment status | ||
- Working (full or part-time) | 242.31 | 0.44 |
Reasons for not working | ||
- Keeping house | 31.37 | 0.17 |
- Unemployed | 16.61 | 0.10 |
- Retired | 81.44 | 0.35 |
- Other | 5.38 | 0.03 |
Days on sick leave | 117.13 | 0.44 |
Degree of disability | ||
- Yes | 56.83 | 0.16 |
Number of pain areas | 4.84 | 0.02 |
Index of the graded chronic pain (von Korff) | ||
- 0 | - | - |
- 1 | 4.33 | 0.02 |
- 2 | 18.85 | 0.06 |
- 3 | 0.43 | 0.00 |
- 4 | 25.73 | 0.08 |
Gut feeling: Will the pain get away? | ||
- Yes | 33.29 | 0.10 |
Number of different therapeutic strategies | 19.81 | 0.06 |
Number of consultations because of back pain/6 months | 12.14 | 0.04 |
Number of operations because of back pain | 14.33 | 0.05 |
Symptom check-list-90-R (Somatization) | 41.18 | 0.13 |
Self-administered comorbidity questionnaire (SACQ) | ||
- Psychological comorbidities* | 23.87 | 0.09 |
- Musculoskeletal comorbidities ** | 56.47 | 0.19 |
- Other comorbidities *** | 30.61 | 0.11 |
Brief resilience scale (RS-11) | 118.04 | 0.28 |
Hospital anxiety and depression (HADS) | ||
- Anxiety | 67.69 | 0.11 |
- Depression | 141.60 | 0.31 |
Coping resources of back pain (FBR) | ||
- Emotional social support | 112.55 | 0.26 |
- Practical help | 85.62 | 0.22 |
- Exercise and relaxation | 101.90 | 0.25 |
- Hobby and enjoyment | 215.64 | 0.41 |
- Cognitive strategies | 183.63 | 0.37 |
- Knowledge | 86.56 | 0.22 |
- Spirituality | 63.15 | 0.17 |