Thai Short-Form McGill Pain Questionnaire
Wasuwat Kitisomprayoonkul MD*, Jakkrit Klaphajone MD**, Apichana Kovindha MD**
Affiliation : * Department of Rehabilitation Medicine, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University ** Department of Rehabilitation Medicine, Faculty of Medicine, Maharaj Nakorn Chiang Mai Hospital, Chiang Mai University, Chiang Mai
Objective : To validate the Thai Short-Form McGill Pain Questionnaire (Th-SFMPQ).
Materials and Methods : A postal survey to find the most corresponding terms to those used in the original
English short-form McGill Pain Questionnaire had been performed. The Thai version was created and vali-
dated. Sixty patients who had either musculoskeletal or neuropathic pain were assessed by two interviewers
with this Th-SFMPQ.
Results : Forty four women and sixteen men participated in this study. Average age was 44.3 + 12.8 years and
80% of them had musculoskeletal pain. Means of sensory score was 8.98, affective score was 5.73, total score
was 14.71, total count was 7.33, Present Pain Intensity (PPI) was 3.21 and Visual Analog Scale (VAS) was
53.61. Cronbach’s α value was 0.7881 and inter-rater validity value of PPI was more than 0.7. The correlation
coefficient was quite high (r > 0.8) for all scales. Regarding content validity, three pain descriptors (i.e.
stabbing, gnawing, and splitting) did not meet 33% in Melzack’s criteria.
Conclusion : The Th-SFMPQ has good internal consistency and inter-rater validity. Three uncommon descrip-
tors should be substituted by other words or discarded in later version.
Keywords : Pain, Questionnaire, Thai short-form McGill Pain Questionnaire, Musculoskeletal pain, Neuro- pathic pain, Validation test
