Translation and psychometric testing of a decision-making scale

WHAT IS KNOWN ABOUT SHARED DECISION-MAKING?: There is increasing investigation of shared decision-making in mental health services. Exploration of shared decision-making and relevant instrument is scant in China. WHAT THIS PAPER ADDS TO EXISTING KNOWLEDGE?: In this study, the Clinical Decision-making Involvement and Satisfaction (CDIS) was translated into Chinese and validated with patients and mental health professionals. The Chinese version of the CDIS is a reliable and valid instrument for measuring perception of involvement and satisfaction with treatment decision for schizophrenia WHAT ARE THE IMPLICATIONS FOR PRACTICE?: Mental health nurses could use the CDIS patient-rated and health professional-rated versions to compare their perceptions of the decision-making process. ABSTRACT: 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.