Table 3:
Correlations among pain, sleep and negative cognitions
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. Pain | 1 | |||||||||
| 2. Insomnia | .50** | 1 | ||||||||
| 3. PCS | .47** | .31** | 1 | |||||||
| 4. PCS Rumination | .40** | .25** | .90** | 1 | ||||||
| 5. PCS Magnification | .36** | .17* | .75** | .54** | 1 | |||||
| 6. PCS Helplessness | .45** | .35** | .91** | .72** | .51** | 1 | ||||
| 7. Sleep cognitions | .17* | .56** | .26** | .20* | .19* | .26** | 1 | |||
| 8. Depression | .24** | .40** | .47** | .41** | .27** | .50** | .40** | 1 | ||
| 9. Age | .13 | .18* | 0.03 | 0.02 | 0.05 | −0.04 | 0.07 | −0.01 | 1 | |
| 10. BMI | .15 | .08 | .01 | −.01 | .13 | −.07 | −.06 | −.10 | .25** | 1 |
| 11. TMJD duration | −.02 | .08 | −.11 | −.09 | −.10 | −.10 | −.12 | .04 | .28** | .10 |
*
p < .05
**
p < .01
PCS = Pain Catastrophizing Scale; BMI = Body Mass Index; TMJD = Temporomandibular Joint Disorder