Table 2.
Correlation coefficients between measures
| SF-12 total | SF-12 physical | SF-12 mental | NDI | VAS | STAI | BECK | |
|---|---|---|---|---|---|---|---|
| Chronic neck pain | |||||||
| SF-12 total | 1 | 0.896** | 0.861** | −0.682** | −0.137 | −0.191 | −0.556** |
| SF-12 physical | 1 | 0.546** | −0.728** | −0.056 | −0.141 | −0.493** | |
| SF-12 mental | 1 | −0.453** | −0.201 | −0.199 | −0.486** | ||
| NDI | 1 | 0.142 | 0.227 | 0.575** | |||
| VAS | 1 | 0.118 | 0.179 | ||||
| STAI | 1 | 0.405** | |||||
| BECK | 1 | ||||||
| Acute whiplash | |||||||
| SF-12 total | 1 | 0.851** | 0.932** | −0.468** | −0.083 | −0.177 | −0.575** |
| SF-12 physical | 1 | 0.604** | −0.515** | −0.101 | −0.271 | −0.414** | |
| SF-12 mental | 1 | −0.355** | −0.057 | −0.082 | −0.588** | ||
| NDI | 1 | 0.338* | 0.114 | 0.529** | |||
| VAS | 1 | −0.049 | 0.292 | ||||
| STAI | 1 | −0.016 | |||||
| BECK | 1 | ||||||
| Neck pain with primary headache | |||||||
| SF-12 total | 1 | 0.897** | 0.851** | −0.476** | −0.29 | −0.151 | −0.814** |
| SF-12 physical | 1 | 0.531** | −0.422* | −0.083* | −0.93 | −0.673** | |
| SF-12 mental | 1 | −0.411* | −0.043 | −0.178 | −0.76** | ||
| NDI | 1 | 0.41* | 0.128 | 0.52** | |||
| VAS | 1 | 0.088 | 0.133 | ||||
| STAI | 1 | −0.028 | |||||
| BECK | 1 | ||||||
| Neck pain with temporomandibular dysfunction | |||||||
| SF-12 total | 1 | 0.909** | 0.873** | −0.637** | −0.474* | −0.125 | −0.389* |
| SF-12 physical | 1 | 0.591** | −0.583** | −0.425* | 0.256 | −0.299 | |
| SF-12 mental | 1 | −0.551** | −0.414* | −0.057 | −0.406* | ||
| NDI | 1 | 0.442** | −0.026 | 0.211 | |||
| VAS | 1 | 0.026 | −0.227 | ||||
| STAI | 1 | 0.225 | |||||
| BECK | 1 | ||||||
Notes:
*
P < 0.05;
**
P < 0.01.
Abbreviations: NDI, Neck Disability Index; VAS, visual analog scale; BECK, Beck Depression Inventory; STAI, State-Trait Anxiety Inventory; SF-12, Short Form-12 Health Survey.