Objective: to translate the short-form McGill Pain Questionnaire (SF-MPQ) into E-san language (SF-MPQ-E) and to test its reliability and sensitivity in patients suffering from 3 different types of pain.
Materials and Methods: Beaton’s guidelines for cross-cultural translation and adaption of health-related measures were used. Subsequently, the questionnaire was administered to a sample of 186 diverse pain patients (40 neuropathic pain, 103 musculoskeletal pain and 43 inflammatory odontogenic pain). Index of Item Objective Congruence (IOC) was used to test the content validity. Pearson Coefficient was used to test predictive validity. The test–retest reliability between the first and second interview was calculated by the intraclass correlation coefficient (ICC) and Cronbach’s alpha was used to assess the internal consistency of the SFMPQ-E.
Results: Most of the pain descriptors in the SF-MPQ-E has high score of IOC >0.5. The results for test and retest predictive validity and reliability demonstrated good correlation in all 3 pain groups. The internal consistency of the test using Cronbach’s alpha was found to be high in the musculoskeletal and odontogenic pain group (>0.8) and moderate in the neuropathic pain group (0.512).
Conclusion: SF-MPQ-E is a reliable and valid instrument for the measurement for pain in E-san speaking patients with neuropathic, musculoskeletal and odontogenic origin.

Keywords: Short-form McGill Pain Questionnaire, E-san language, Translation, Pain, Musculoskeletal pain, Odontogenic pain, neuropathic pain