Pain is the most important factor that forces patients to seek help from health care systems. Burn injuries are associated with severe pain and the assessment and interventions are a focus of nursing care. The aim of this study was to evaluate the psychometric properties of the revised short-form McGill Pain Questionnaire in burn patients. The present study is a methodological study in which 153 burn patients were included by convenience sampling. To evaluate the psychometric properties of the 22-item revised McGill Pain Questionnaire, face validity, construct validity (exploratory factor analysis) and reliability were determined by Cronbach's Alpha coefficient and split-half method. Data analysis was performed using SPSS22.0 software. During the quantitative face validity test, 4 items were removed from the instrument due to the impact score of less than 1.5 by burn patients. The results of exploratory factor analysis showed 5 factors (emotional, neuropathic, continuous, stimulatory, and shooting), which explained 72.32% of the total variance. The overall Cronbach's instrument was 0.836 and the coefficient obtained by the split-half method was 0.81. According to the validity and reliability, the 18-item McGill Pain Questionnaire obtained in the present study can be used to assess pain in Persian-speaking adult burn patients.
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