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External longitudinal construct validity of the German BQN compared with the NPAD (Neck Pain and Disability Scale) and NDI (Neck Disability Index).
| BQ Neck Scale | NPAD Pearson r (significance) | NDI Pearson r (significance) |
|---|---|---|
| Pain | .59 (.001) | .56 (.001) |
| Physical Function | .36 (.001) | .37 (.001) |
| Social Function | .50 (.001) | .44 (.001) |
| Anxiety | .45 (.001) | .53 (.001) |
| Depression | .43 (.001) | |
| Work-related fear avoidance | .48 (.001) | |
| Pain Control | .30 (.011) | |
