Validation of a web-based version of the Craniofacial Pain and Disability Inventory

Objective: To translate and cross-culturally adapt the Craniofacial Pain and Disability Inventory (CF-PDI) into Chinese and, to evaluate measurement properties of the web-based version of the CF-PDI.

Methods: The Chinese version (CF-PDI/C) was first produced according the guidelines. Then, the web-based version of CF-PDI/C (eCF-PDI/C) was developed by our team and a third-party survey provider. The eCF-PDI/C was distributed to patients with painful temporomandibular disorders (TMD) with or without headache to evaluate its psychometric properties. The reliability of the eCF-PDI/C was detected by internal consistency and test-retest reliability. The validity of the measure was performed through construct validity and convergent validity.

Results: A total of 206 patients were recruited. The Cronbach's α value and the intraclass correlation coefficients (ICC) value of the eCF-PDI/C was .912 and .82, respectively. Following exploratory factor analysis (EFA), three factors were extracted, accounting for 77.153% of the total variation. With regard to the convergent validity, the measure evidenced a good relationship with the global health question.

Conclusions: The eCF-PDI/C displays good reliability and validity through rigorous performance tests. This can be recommended for use among patients with painful TMD with or without headache.