Psychometric Evaluation of the Korean Version of CollaboRATE Among Multimorbid Patients with Hypertension.

BACKGROUND

CollaboRATE is a 3-item instrument that measures patients' perceived shared decision-making. Compared to other shared decision-making measures, it demonstrates strong content validity and is brief enough for use in busy clinical environments. However, no Korean version is currently available.

OBJECTIVES

This study aimed to translate CollaboRATE into Korean and evaluate its psychometric properties among multimorbid patients with hypertension.

METHODS

The original version of CollaboRATE was translated into Korean using a forward- and back-translation process. Cognitive interviews were conducted with 6 patients. A cross-sectional survey was then conducted with 503 patients to evaluate the psychometric properties. Internal consistency was assessed using Cronbach's alpha, and structural validity was examined with exploratory and confirmatory factor analyses. Construct validity was evaluated with hypothesis testing.

RESULTS

Based on the cognitive interviews, several phrases were revised to improve item clarity. Cronbach's alpha for the Korean version of CollaboRATE was 0.93. Factor analysis suggested a one-factor structure. As hypothesized, CollaboRATE scores were positively correlated with scores of the Shared Decision Making Q-9 (r = 0.67), the Patient Activation Measure (r = 0.17), and the Partners in Health Scale measuring self-care (r = 0.36), supporting its construct validity.

CONCLUSION

The Korean version of CollaboRATE is a reliable and valid instrument for assessing patients' perceptions of shared decision-making.