The journal of pain : official journal of the American Pain Society
-
Several self-report measures were used to identify 6 activity patterns in chronic pain patients: pain avoidance, activity avoidance, task-contingent persistence, excessive persistence, pain-contingent persistence, and pacing. Instruments for assessing pacing should include 3 pacing behaviors (breaking tasks into smaller tasks, taking frequent short rests, slowing down), each of which relate to a single goal (increasing activity levels, conserving energy for valued activities, and reducing pain). This article presents the Activity Patterns Scale (APS), which assesses these 6 activity patterns. Study 1 included 291 participants with chronic pain, and tested 3 structures using confirmatory factor analyses. The structure with the best fit had 8 factors corresponding to the hypothesized scales. High correlations in the expected direction were found between the APS subscales and the "Patterns of Activity Measure-Pain." Study 2 included 111 patients with chronic pain, and aimed at examining the association between the APS subscales and adjustment to pain. It was found that that activity avoidance was associated with daily functioning and impairment. Negative affect was positively associated with activity avoidance and excessive persistence, and negatively associated with task-contingent persistence, which was also positively associated with positive affect. This study showed that the APS is a valid and reliable instrument for clinical practice and research. ⋯ This article presents a valid and reliable instrument to assess activity patterns in patients with chronic pain. The findings suggest that avoidance, persistence, and pacing are multidimensional constructs. Distinguishing between these dimensions sheds light on previous contradictory results and has direct clinical implications regarding recommending the most advisable activity patterns.
-
The Opioid Compliance Checklist (OCC) is a self-report measure for chronic pain patients prescribed long-term opioid therapy. The original measure includes 'yes' or 'no' items that reflect the content of a typical opioid therapy agreement. The aim of the study was to assess the efficacy of the OCC for monitoring opioid adherence among chronic noncancer pain patients within primary care. One hundred seventy-seven chronic pain patients were recruited as part of a larger study from 8 primary care centers. All patients completed pre- and poststudy measures as well as the OCC once a month for 6 months. Patients were classified on the Drug Misuse Index on the basis of results of urine toxicology screens, physician misuse behavior ratings, and self-report questionnaire results. Patients treated in primary care reported fewer incidences of misuse compared with patients from pain specialty centers in the original study. Three items from the OCC were found to be most predictive of opioid misuse measured according to the area under the curve (AUC = .681) analyses, although use of the 8-item OCC seemed equally valid. By the end of the study the patients reported lower scores on the OCC (greater compliance with their opioid medication). Results of this study suggest that the psychometric parameters of the shortened 8-item OCC are not based solely on unique characteristics of the initial validation sample. The OCC seemed to be a reliable and valid screening tool to help detect current and future aberrant drug-related behavior and nonadherence among chronic pain patients in primary care. ⋯ The OCC is a brief 'yes' or 'no' questionnaire that reflects areas of compliance that are often included in an opioid therapy agreement. Repeated administrations of the OCC among patients who receive opioids for chronic pain can increase the chance of identifying those who misuse or are likely to misuse opioids.