Psychometric evaluation of the Client-Centered Rehabilitation Questionnaire (CCRQ) in a large sample of German rehabilitation patients.

OBJECTIVE: Structural analysis of the German translation of the "Client-Centered Rehabilitation Questionnaire" (CCRQ).

DESIGN: Cross-sectional multicenter study.

SETTING: Ten inpatient rehabilitation centers in Germany.

SUBJECTS: The CCRQ was completed by patients in the ten rehabilitation centers.

MAIN MEASURES: The psychometric analysis of the CCRQ was conducted using exploratory and confirmatory factor analysis.

RESULTS: The CCRQ was completed by 496 patients (average age: 59 years; 59.7% women). The CCRQ's 7-factor structure could not be confirmed. Factor analysis showed that the three latent constructs "decision-making/communication", "self-management/empowerment", and "psychosocial well-being" (60.73% variance explained) adequately represent patient-centeredness in medical rehabilitation assessed by the CCRQ. The scales possess good reliability (Cronbach's α = .83 to .87) and convergent criterion validity (r = 0.48 to 0.68). The three-factorial model exhibited good local and global data fit (RMSEA: 0.063, CFI 0.962, TLI 0.954) and proved to have a better data fit than concurring models (e.g. a model assuming an underlying factor).

CONCLUSIONS: A validated short form of the Client-Centered Rehabilitation Questionnaire, CCRQ-15, could be identified. Three scales based on 15 items allow assessing the key aspects of patient-centeredness in German medical rehabilitation.