Translation, Cultural Adaptation and Validation of the Current Opioid Misuse Measure for European Portuguese

Abstract

Introduction: Current practice guidelines recommend using Current Opioid Misuse Measure to screen aberrant opioid-related behaviors in chronic pain patients. Our aims were to translate, adapt and validate it to be used in Portuguese chronic pain patients.Material and Methods: Translation and cultural adaptation process followed guidelines and a model of principles for good practice. Adult chronic pain patients on opioid therapy, from one major hospital in Portugal, were invited to complete the translated version. Descriptive statistics, Cronbach’s alpha, inter-item, item-total and intra-class correlation coefficients and principal components analysis were applied.Results: Translation process was performed as planned and the validation sample was composed by 98 patients (median age = 62.5 years). Regarding internal consistency, a global Cronbach’s alpha of 0.778 was obtained and item-total correlations of all items were above 0.20 with four exceptions. An intra-class correlation coefficient of 0.90 was found between test and retest. Regarding validity, all 17 items presented a content validity index above 0.80. Six principal components were extracted and explained 66.3% of the variance.Discussion: The Portuguese version of Current Opioid Misuse Measure was properly translated, adapted and validated; showing good quality in terms of reliability and validity. This is the first instrument to screen aberrant opioid-related behaviors in Portuguese chronic pain patients. Consequently, it will aid and promote the identification of opioid misuse in these patients.Conclusion: The implementation of this questionnaire may reduce the incidence and morbimortality of opioid misuse among chronic pain patients and should improve chronic pain treatment in Portugal.

Spanish Validation of the COMM Scale to Assess the Misuse of Prescription Opioids in Patients with Chronic Noncancer Pain

“…This factor structure is different from the ones found in previous studies. According to Rogers et al ( 2020 ), the original English version of the COMM (Butler et al, 2007 ) has a 2-factor structure, the Chinese version (Zhao et al, 2015 ) has a 4-factor structure, and the Portuguese version (Mendes-Morais et al, 2020 ) has a 6-factor structure. All these studies include factors related to emotional, cognitive, and interpersonal problems and factors related to medication misuse (including searching for more medication than prescribed).…”

“…As far as we know, and apart from the English version, the COMM has only been validated in China (Zhao et al, 2015 ) and Portugal (Mendes-Morais et al, 2020 ). No Spanish study has examined the factor structure of the COMM.…”

Outcomes of a QST Protocol in Healthy Subjects and Chronic Pain Patients: A Controlled Clinical Trial

“…Pain is the main symptom leading patients to seek medical care, and chronic pain is one of the main sources of “years of lived with disability”, representing an enormous economic burden to health care systems [ 1 , 2 , 3 , 4 ]. More than 30% of the world’s population suffers from chronic pain [ 2 , 5 , 6 , 7 , 8 ]. Chronic pain lacks the protective function of acute pain and may be caused by several conditions, such as long-term inflammatory events, traumatic and metabolic injuries of the nervous system, and diseases or their treatment, such as cancer and chemotherapy [ 1 , 2 , 4 ].…”