Reproducibility: Reliability and Agreement Parameters of the Revised Short McGill Pain Questionnaire Version-2 for use in Patients with Musculoskeletal Shoulder Pain

Abstract

Background: The Revised Short McGill Pain Questionnaire Version-2 (SF-MPQ-2) is a multidimensional outcome measure designed to evaluate neuropathic and non-neuropathic pain. A recent systematic review found insufficient psychometric data with respect to musculoskeletal health conditions. Aims: To describe the reproducibility (reliability and agreement) and internal consistency of the SF-MPQ-2 for use among patients with musculoskeletal shoulder pain. Methods: Eligible patients with shoulder pain from MSK sources completed the SF-MPQ-2: at baseline (n=195), and a subset did so again after 3-7days (n= 48), if their response to the Global Rating of Change scale remained unchanged. Cronbach alpha (α) and intraclass correlation coefficient (ICC2,1) were calculated. Standard Error of Measurement (SEM), group and individual minimal detectable change (MDC90), and Bland-Altman (BA) plots were used to assess agreement. Results: Cronbach α ranged from 0.83 to 0.95 suggesting very satisfactory internal consistency across the SF-MPQ-2 domains. Excellent ICC2,1 scores were found in support of the total (0.95) and continuous (0.92) subscales; the remaining subscales displayed good ICC2,1 scores (0.78 to 0.88). Bland-Altman analysis revealed no systematic bias between the test and retest scores (mean difference = 0.13 to 0.19). While the best agreement coefficients were seen on the total scale (SEM = 0.5; MDC90 = 1.2 and MDC90group = 0.3), they were acceptable for the SF-MPQ-2 subscales (SEM: range, 0.7 to 1; MDC90: range, 1.7 to 2.3; MDC90group: range, 0.4 to 0.5). A c c e p t e d M a n u s c r i p t Information Classification: General Conclusions: The SF-MPQ-2 provides good to excellent test-retest reliability for multidimensional pain assessment among patients with musculoskeletal shoulder pain conditions.

A validation study of the Cantonese Chinese version of short form McGill pain questionnaire 2 in Cantonese‐speaking patients with chronic pain in Hong Kong

“…The intensity scale for each item was expanded from 4 (0-3) to 11 (0-10) to increase its sensitivity to changes in response to treatment. 4,5 Although it was not designed for any specific pain condition, it has been shown to reliably assess musculoskeletal pain conditions, [7][8][9] visceral pain, 10 cancer pain, 11 and neuropathic pain. 12 SF-MPQ-2 has been validated and translated into 33 languages in 54 regions, and a Standard Mandarin Chinese version (SF-MPQ-2-CN) had been validated for Mandarin-speaking Chinese patients in Hebei Province of China.…”

“…The intensity scale for each item was expanded from 4 (0–3) to 11 (0–10) to increase its sensitivity to changes in response to treatment 4,5 . Although it was not designed for any specific pain condition, it has been shown to reliably assess musculoskeletal pain conditions, 7–9 visceral pain, 10 cancer pain, 11 and neuropathic pain 12 …”