Table 3.
Distribution of depression score and pain characteristics by opioid misuse, stratified by pain location (n = 122).
| Variables, mean (sd) | CPOL 1 (n = 61) | CLBP 1 (n = 61) | Interaction p-value 5 | ||||
|---|---|---|---|---|---|---|---|
| COMM 2 negative (n = 44) | COMM 2 positive (n = 17) | p-value * | COMM 2 negative (n = 48) | COMM 2 positive (n = 13) | p-value * | ||
| PHQ-9 3 | 8.6 (± 5.6) | 17.4 (± 5.2) | <0.001 | 10.3 (± 6.8) | 13.9 (± 5.7) | 0.08 | 0.050 |
| BPI 4 | |||||||
| Total Average pain index | 6.3 (± 1.8) | 7.5 (± 1.3) | 0.017 | 5.8 (± 1.7) | 6.6 (± 1.6) | 0.101 | 0.638 |
| Total Average pain interference | 5.9 (± 2.6) | 8.6 (± 1.0) | <0.001 | 6.3 (± 2.2) | 8.2 (± 1.2) | 0.005 | 0.384 |
Note: p-value is for chi-square tests for categorical variables and independent samples t-tests for continuous variables. 1 CPOL: Chronic Pain of Other Location, CLBP: Chronic Low Back Pain; 2 COMM = Current Opioid Misuse Measure (0–68); 3 PHQ-9 = Depression scale (0–27); 4 BPI = Brief Pain Inventory (Average Severity and interference: 0–10); 5 p-value for interaction term of pain location * COMM Opioid Misuse, ANOVA for continuous variables and Breslow-Day test for dichotomous variables.