Development and validation of a short version of Chronic Oral Mucosal Disease Questionnaire (COMDQ‐15)

Abstract

Background:The adoption of the Chronic Oral Mucosal Disease Questionnaire (COMDQ) into clinical practice has been low, despite its rigorous development process. A potential limitation of the COMDQ is the high response burden to patients. Therefore, the aim of the present study was to develop and validate a short version of the 26-item COMDQ. Methods:The COMDQ data of 520 patients with chronic oral mucosal diseases were randomly divided into 2 subsamples. Descriptive item analysis and exploratory factor analysis (EFA) were performed using data from the first subsample for item reduction and development of the shortened COMDQ. The resulting short version was then validated using confirmatory factor analysis (CFA) on the other subsample. Internal consistency reliability of the short-form COMDQ was assessed using Cronbach's alpha. Criterion validity of this new scale was examined against its original version. Results:Based upon item analysis, 11 items were dropped. EFA results on the remaining 15 items extracted 4 factors consistent with the original COMDQ, and CFA results displayed acceptable goodness-of-fit indices of this factor structure on different sample. The COMDQ-15 was then created. Cronbach's alpha of 4 subscale scores ranged from 0.7 to 0.91, indicating good internal consistency reliability of the COMDQ-15.Correlations between total and subscale scores of the COMDQ-15 and its parent scale were high, supporting good criterion validity of this shortened scale. Conclusion:The COMDQ-15 is a brief, valid and reliable instrument that can give an overview of the patient's quality of life related to their chronic oral mucosal conditions.

Meaningful improvement thresholds in measures of pain and quality of life in oral lichen planus

“…The 15‐item Chronic Oral Mucosal Disease Questionnaire (COMDQ‐15) is a recently developed short version of the original COMDQ‐26 (Wiriyakijja et al., 2020). Similar to its parent version, the COMDQ‐15 assesses four OH‐QoL domains including Physical Discomfort (PD, 5 items), Medication and Treatment (MT, 3 items), Social and Emotional (SE, 5 items) and Patient Support (PS, 2 items).…”

“…Total COMDQ‐15 score is calculated by summation of the responses of all items, giving the possible maximum score of 60. The COMDQ‐15 has good evidence supporting its validity and reliability for use in patients with OLP (Wiriyakijja et al., 2020).…”

Development and validation of a new short form of the self‐management ability questionnaire for patients with chronic periodontitis

“…A shortened form of the outcome questionnaires can increase the patient acceptability in routine clinical care and heighten feasibility in clinical trials. 26 In the field of dental literature, some short versions of outcome measures have been introduced to facilitate their use in clinical settings. For example, the original 49 items of the Oral Health Impact Profile (OHIP) was shortened to a 14-item measure, the original 48 items of the Dentine Hypersensitivity Experience Questionnaire (DHEQ) was shortened to a 15-item measure, and the original 26 items of the Chronic Oral Mucosal Disease Questionnaire (COMDQ) was shortened to a 15item measure.…”

The patient acceptable symptom state in oral lichen planus: identification of cut-off threshold scores in measures of pain and quality of life

“…Total COMDQ-26 and COMDQ-15 score are calculated by summation of the responses of all items, giving the possible maximum score of 104 and 60, respectively. Both the original and short version of the COMDQ have good evidence supporting validity and reliability for use in patients with OLP [18,17].…”