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. Author manuscript; available in PMC: 2020 Apr 22.
Published in final edited form as: Pain. 2017 Mar;158(3):391–399. doi: 10.1097/j.pain.0000000000000768

Table 3.

Correlations Between Trait Psychosocial Variables and Derived Endogenous Opioid Analgesia and Morphine Analgesia Variables.

Trait Psychosocial Variables
BDI TAI TAS PCS PDI PA
Endogenous Opioid Analgesia
MPQ-Sensory -.40 -.22 -.09 -.39 -.38 .17
MPQ-Affective -.03 .01 .09 -.32 -.01 -.09
MPQ-Present Pain -.31 -.10 -.21 -.32 -.26 .18
Morphine Analgesia
MPQ-Sensory -.40 -.32 -.21 -.45 -.32 .23
MPQ-Affective -.35 -.44 -.18 -.22 -.38 .35
MPQ-Present Pain -.42 -.31 -.26 -.38 -.34 .31

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