Abstract
BackgroundOur objective was to evaluate the measurement properties of the Pain Stages of Change Questionnaire (PSOCQ) and its four subscales Precontemplation, Contemplation, Action and Maintenance.MethodsA total of 231 patients, median age 42 years, with chronic musculoskeletal pain responded to the 30 items in PSOCQ. Thresholds for item scores, and unidimensionality and invariance of the PSOCQ and its four subscales were evaluated by Rasch analysis, partial credit model.ResultsThe items had disordered threshold and needed to be rescored. The 30 items in the PSOCQ did not fit the Rasch model Chi- square item trait statistics. All subscales fitted the Rasch models. The associations to pain (11 point numeric rating scale), emotional distress (Hopkins symptom check list v 25) and self-efficacy (Arthritis Self-Efficacy Scale) were highest for the Precontemplation subscale.ConclusionThe present analysis revealed that all four subscales in PSOCQ fitted the Rasch model. No common construct for all subscales were identified, but the Action and Maintenance subscales were closely related.
Highlights
Our objective was to evaluate the measurement properties of the Pain Stages of Change Questionnaire (PSOCQ) and its four subscales Precontemplation, Contemplation, Action and Maintenance
Chronic musculoskeletal pain is a major cause of sickness absence and disability [1] and represents a great challenge to society
Self-management is increasingly emphasised as part of a multidisciplinary treatment program [2]
Summary
Our objective was to evaluate the measurement properties of the Pain Stages of Change Questionnaire (PSOCQ) and its four subscales Precontemplation, Contemplation, Action and Maintenance. Self-management is increasingly emphasised as part of a multidisciplinary treatment program [2]. How motivated the patient is to engage in treatment recommendations may affect the way a person carries out the program. It may determine the outcome and influence the choice of clinical approach [4,5]. There is a need for clinical evaluation tools to determine the orientation and motivation of the patient towards a self-management approach
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