Cross-Cultural Adaption and Psychometric Evaluation of the German Craniofacial Pain and Disability Inventory (CF-PDI)

BACKGROUND: The Craniofacial Pain and Disability Inventory (CF-PDI) is a cross-culturally adapted instrument designed from biopsychosocial perspective to measure pain, disability, function in orofacial head neck pain with shown psychometric properties; however, the German cross-cultural adaption lacking. OBJECTIVES: To carry out transcultural translation of CF-PDI into assess its properties patients painful temporomandibular disorders (TMD) respect construct clinical validity, internal consistency reproducibility. STUDY DESIGN: Multicenter, prospective, cross-sectional design. SETTING: Patients (n = 398) were recruited dental physical therapy clinics middle south Germany. METHODS: Structural validity was assessed using exploratory factor analysis (EFA) confirmatory (CFA). We investigated know-group by means scale’s potential discriminate between affected unaffected subjects. Multiple linear regression used estimate convergent validity. tested test-retest reliability intraclass correlation coefficient Internal Cronbach’s alpha, or each dimension separately, total score. RESULTS: Two hundred forty-six heterogeneous chronic craniofacial 152 without complaints version CF-PDI-G presents 21 items, 4 factors, adequate properties. both excellent for entire also all sub-scales (intraclass [ICC] > 0.90) except comorbidities interference work which acceptable (ICC 0.69). Standard error measurement (SEM) minimal detectable change values are sufficiently low. Assessment shows good discrimination classification categories “no,” “mild,” “moderate,” “severe.” multiple model showed strong association disability index, Visual Analog Scale, anamnestic questionnaire (supporting validity). LIMITATIONS: Our sample has higher prevalence women not consecutively, may lead biased estimation CONCLUSIONS: represents valid reliable headache suitable research practice. KEY WORDS: cross-cultural, version, headache, validation, questionnaire, reliability,