Table 2.
Correlations among study measures
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 1. Age | - | −.06 | .11 | −.37 | −.27** | −.31** | −.18** | .13 | ||
| .02 | ||||||||||
| 2. Opioid dose † | - | −.12 | .08 | −.05 | −.10 | −.24 | .03 | |||
| −.13 | ||||||||||
| 3. Pain duration | - | .29* | .19 | .18 | .13 | −.24 | .18 | |||
| 4. Pain intensity (BPI) | - | .71** | .51** | .32** | −.10 | |||||
| .07 | ||||||||||
| 5. Pain interference (BPI) | - | .46** | .39** | −.04 | ||||||
| .00 | ||||||||||
| 6. Catastrophizing (PCS) | - | .41** | −.14 | .15* | ||||||
| 7. Depressive symptoms (BDI) | - | .01 | .00 | |||||||
| 8. Conditioned pain modulation | - | |||||||||
| −.20** | ||||||||||
| 9. Temporal summation | - | |||||||||
**
Correlation is significant at the .01 level.
*
Correlation is significant at the .05 level.
†
Only among opioid users; BPI: Brief Pain Inventory; PCS: Pain Catastrophizing Scale; BDI: Beck Depression Inventory