Development and validation of the Malay diagnostic criteria for temporomandibular disorders (DC/TMD) / Mohd Khairul Anwar Mohd Tahir
Introduction. The health status questionnaires measuring Oral Health Related Quality of Life has increased tremendously over the years. The Diagnostic Criteria for Temporomandibular Disorders (DC/TMD) was developed in 2014 and has been extensively used worldwide for Temporomandibular Disorders re...
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| Format: | Thesis |
| Published: |
2018
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| Online Access: | http://studentsrepo.um.edu.my/11213/4/anwar.pdf http://studentsrepo.um.edu.my/11213/ |
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| Summary: | Introduction. The health status questionnaires measuring Oral Health Related Quality
of Life has increased tremendously over the years. The Diagnostic Criteria for
Temporomandibular Disorders (DC/TMD) was developed in 2014 and has been
extensively used worldwide for Temporomandibular Disorders research and clinical
settings. However, for this tool to be used in Malaysian culture, the tool has to be
modified from the source version through a formal cross-cultural adaptation process.
This study aims to develop and validate a Malay version of DC/TMD tool through
established guidelines so that it can be used as a TMD diagnostic protocol among the
Malaysian population who are majority Malay language speakers. The objectives of this
study are to translate the English version of DC/TMD into Malay language and to assess
the psychometric properties of the Malay DC/TMD. Methods. The DC/TMD was
translated into the Malay language using a forward-backward method. The finalized
translated version was given to a total of 252 subject which consist of 165 non TMD
individuals and 87 TMD patients. The psychometric properties of 2 domains which
were the Malay Graded Chronic Pain Scale (GCPS) and the Malay Jaw Functional
Limitation Scale (JFLS) were assessed through internal consistency reliability, testretest reliability and validity tests. The literature on this topic was also reviewed.
Results. The Cronbach’s alpha for both domains demonstrated good internal
consistency of the items (Malay GCPS = 0.95, Malay JFLS = 0.97) while the intraclass
correlation coefficient for test-retest reliability was 0.98 for Malay GCPS and 0.99 for
Malay JFLS. There were 3 types of validity tests that were conducted namely,
concurrent validity, construct validity and discriminant validity. All validity association
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were found statistically significant with good positive correlation except for the
association between Malay GCPS and 3 items of Malay version of Oral Health Impact
Profile (M-OHIP) which were poor negative correlations. Eleven out of fourteen
constructed validity hypotheses were confirmed with 79% of the results corresponding
to the itemized hypotheses. A specific OHIP tool for TMD (OHIP TMD) is
recommended for a more sensitive result to be used in the future. Conclusion. The
Malay version of DC/TMD is empirically shown to be valid and reliable for assessing
TMD among Malay language speakers in Malaysia. A further study is recommended to
collect more data for better supportive evidence.
Key words: DC/TMD, cross-cultural adaptation, Malay language, Temporomandibular
disorders, Reliability and Validity, Translation |
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