Dutch Translation and Validation of the Communicative Participation Item Bank (CPIB)--Short Form

Background: Several conditions and diseases can result in speech problems that can have a negative impact on everyday functioning, referred to as communicative participation. Subjective problems with acquired speech problems are often assessed with the speech handicap index (SHI). To assess generic participation problems, the Utrecht Scale for Evaluation of Rehabilitation--Participation (USER-P) questionnaire is frequently used. The English questionnaire Communicative Participation Item Bank--short form (CPIB short form) is a 10-item valid, reliable instrument that assesses communicative participation. In the absence of a Dutch equivalent, translation and validation of the CPIB short form was required. Aims: To translate the CPIB short form into Dutch, and to determine its psychometric properties for the group of adults with speech problems resulting from a neurological aetiology or head and neck cancer. Methods & Procedures: Translation of the CPIB short form was performed following the instructions of the European Organisation for Research and Treatment for Cancer (EORTC). In a cross-sectional multi-centre study, participants completed the Dutch CPIB short form together with the SHI and USER-P, and the CPIB a second time after 2 weeks. We assessed internal consistency and test--retest reliability of the CPIB. Construct validity was assessed based on correlations with SHI, USER-P and speech assessments. Outcomes & Results: In the validation study, 122 participants were included: 51 with dysarthria due to different neurological disorders, 48 with speech problems due to head and neck cancer treatment and 23 healthy controls. Internal consistency of the items was high (Cronbach's alpha = 0.962), the intraclass correlation coefficient (ICC) for test-retest reliability was high 0.908 (95% CI = 0.870-0.935). Construct validity was supported by a strong correlation between the Dutch CPIB short form and the SHI total score (SHI total r[subscript s] = 0.887) and a moderate correlation between the Dutch CPIB-10 and the USER-P subscales (USER-P Frequency r[subscript s] = 0.365; USER-P restrictions and USER-P satisfaction r[subscript s] = 0.546). A moderate correlation was found between the Dutch CPIB-10 and the speech performance assessments (degree of distortedness r = -0.0557; p [less than or equal to] 0.001; degree of intelligibility r = 0.0562). Conclusions & Implications: The Dutch CPIB short form provides a valid and reliable tool for clinical practice and research purposes. It allows clinicians to start using this PROM in clinical and research practice to systematically investigate the impact of the speech problems on communicative participation in a Dutch-speaking population.