Table 2. Correlations Among Trait Psychosocial Variables and Residualized McGill Pain Questionnaire Scores for each Drug Condition (Placebo, Naltrexone, and Morphine).
| Trait Psychosocial Variables | ||||||
|---|---|---|---|---|---|---|
| BDI | TAI | TAS | PCS | PDI | PA | |
| Placebo | ||||||
| MPQ-Sensory | .15 | .03 | .09 | .05 | -.12 | -.03 |
| MPQ-Affective | -.17 | -.09 | .01 | -.30 | -.15 | .08 |
| MPQ-Present Pain | .01 | -.06 | .18 | -.04 | -.15 | .03 |
| Naltrexone | ||||||
| MPQ-Sensory | -.33 | -.24 | -.04 | -.42 | -.57 | .17 |
| MPQ-Affective | -.20 | -.10 | .09 | -.32 | -.24 | .06 |
| MPQ-Present Pain | -.37 | -.18 | -.07 | -.43 | -.46 | .26 |
| Morphine | ||||||
| MPQ-Sensory | -.29 | -.33 | -.15 | -.47 | -.50 | .23 |
| MPQ-Affective | -.53 | -.55 | -.17 | -.54 | -.54 | .46 |
| MPQ-Present Pain | -.51 | -.45 | -.13 | -.54 | -.62 | .44 |
Note: r = +/- .21, p < .05. BDI = Beck Depression Inventory; TAI = Trait Anxiety Inventory; TAS = Trait Anger Scale; PCS = Pain Catastrophizing Scale; PDI = Pain Disability Index; PA = Positive Affect Scale; MPQ = McGill Pain Questionnaire