Psychometric properties of the 10-item Back Pain Attitudes Questionnaire
| Component | Items | Eigenvalue | Explained variance (%) | α (95% CI) | Inter-item correlation | n |
|---|---|---|---|---|---|---|
| 1. Psychological influences on recovery | 30, 31 | 1.673 | 16.7 | 0.78 (0.74 to 0.82) | 0.641 | 594 |
| 2. Prognosis of back pain | 32, 33 | 1.489 | 14.9 | 0.64 (0.57 to 0.69) | 0.473 | 595 |
| 3. Relationship between back pain and injury | 13, 14 | 1.487 | 14.9 | 0.60 (0.54 to 0.66) | 0.444 | 597 |
| 4. Activity participation during back pain | 25, 27 | 1.420 | 14.2 | 0.58 (0.50 to 0.64) | 0.423 | 593 |
| 5. Vulnerability of the back | 6, 11 | 1.372 | 13.7 | 0.50 (0.42 to 0.58) | 0.350 | 588 |
| Total score | 74.4 | 0.61 (0.56 to 0.66) | 0.138 | 576 |