McGill Pain Questionnaire Scores Do Not Predict Outcomes of Outpatient Therapy for Patients with Low-Back Pain
Authors: Zogaria, John R; Bohannon, Richard W.
Source: Journal of Manual & Manipulative Therapy, Volume 11, Number 2, 2003 , pp. 110-116(7)
Publisher: Maney Publishing
Abstract:The purpose of this study was to determine the value of the McGill Pain Questionnaire (MPQ) as a predictor of two outcomes in patients receiving outpatient physical therapy services. The outcomes of interest were the patients' final Oswestry Low-Back Pain Questionnaire (OLBPQ) score and the change between the patients' initial and final OLBPQ scores. Predictive validity of the MPQ was examined in the context of other potentially informative variables. Data from 23 patients with low-back pain were analyzed. Data obtained at enrollment included initial MPQ and OLBPQ scores, demographics, compensation status, time since onset, injury type, employment type, and worker class. MPQ scores predicted neither outcome. Initial OLBPQ scores and compensation status, however, predicted outcomes. Together these variables explained 59.1 percent of the variance in the final OLBPQ score and 46.3 percent of the variance in the change (improvement) in the OLBPQ score. Results of this study do not support use of the MPQ as a predictor of functional outcome in outpatients with low-back pain.
Document Type: Research Article
Publication date: 2003-04-01