Table 2.
Descriptive data and distribution of responses for each item in the NPAD–DLV (n = 112) and Spearman correlation between item scores and total score
| Item | Present study Mean (SD) | % Individuals with lowest score | % Individuals with highest score | Numbers of missing | Item–total Correlation |
|---|---|---|---|---|---|
| 1. Pain intensity | 2.6 (1.0) | 1 | 2 | 1 | 0.66 |
| 2. Average pain | 2.9 (0.9) | 0 | 1 | 1 | 0.58 |
| 3. Worst pain | 4.2 (0.7) | 0 | 13 | 1 | 0.45 |
| 4. Sleeping | 2.5 (1.5) | 9 | 3 | 1 | 0.60 |
| 5. Standing | 2.1 (1.2) | 2 | 1 | 1 | 0.66 |
| 6. Walking | 2.0 (1.1) | 5 | 1 | 1 | 0.68 |
| 7. Driving/riding | 2.6 (1.3) | 5 | 2 | 1 | 0.67 |
| 8. Social activities | 2.9 (1.2) | 3 | 4 | 1 | 0.73 |
| 9. Recreational activities | 3.0 (1.1) | 2 | 2 | 1 | 0.72 |
| 10. Working | 3.4 (1.1) | 1 | 7 | 1 | 0.57 |
| 11. Personal care | 1.7 (1.3) | 10 | 0 | 1 | 0.70 |
| 12. Personal relationships | 2.1 (1.3) | 6 | 0 | 1 | 0.70 |
| 13. Outlook on life and future | 2.2 (1.6) | 9 | 5 | 1 | 0.57 |
| 14. Emotions | 2.5 (1.4) | 4 | 1 | 1 | 0.61 |
| 15. Thinking/concentration | 2.7 (1.5) | 7 | 4 | 1 | 0.55 |
| 16. Neck stiffness | 2.5 (1.2) | 3 | 1 | 1 | 0.50 |
| 17. Turning neck | 2.4 (1.3) | 5 | 1 | 1 | 0.57 |
| 18. Looking up/down | 2.3 (1.4) | 6 | 2 | 2 | 0.52 |
| 19. Working overhead | 3.5 (1.2) | 1 | 8 | 1 | 0.50 |
| 20. Effect of pain pills | 2.7 (1.4) | 5 | 6 | 2 | 0.47 |
All correlations significant at the 0.01 level (2-tailed)