Translation and psychometric testing of a decision-making scale

Introduction: There is growing interest in shared decision-making in Chinese mental health services. However, few specific instruments are available to measure decision-making satisfaction and involvement.
Aim: To translate and validate Clinical Decision-making Involvement and Satisfaction (CDIS) in a Chinese population.
Methods: The translation process was completed based on the Brislin translation method. Convenience sampling of 505 participants including 212 people diagnosed with schizophrenia and 293 mental health professionals for psychometric testing (e.g., content and construct validity, and test-retest reliability).
Results: The CDIS Chinese version has good internal consistency and temporal stability. Factor analysis determined two factors including satisfaction and involvement subscales, explaining 60.08% of the total variance. The Cronbach's α was 0.70, and the intraclass correlation coefficient ranged from 0.83 to 0.89. The composite reliability value was 0.85, and the average variance extracted was 0.50. Critical Ratio values ranged from 5.28 to 17.95, and item-total correlation values ranged from 0.48 to 0.75.
Discussion: The CDIS Chinese version is a feasible and reliable instrument.