The purpose of this study was to test the reliability and validity of the Advance Care Planning Engagement Survey-9 Korean version in patients with cardiovascular diseases or metabolic syndrome. In this cross-sectional study, data on advance care planning engagement, registration of advance directives and the intention, and sociodemographic characteristics were collected from 105 patients (mean age, 66.3 years) at 4 medical institutions. Cronbach α was used to test the reliability. Confirmatory factor analysis and independent t tests were used to test the validity. Cronbach α s for the total scale and the self-efficacy and readiness dimensions were .93, .82, and .97, respectively. In confirmatory factor analysis with 2 factors, all indices of model fit were acceptable: comparative fit index, 0.995; Tucker-Lewis index, 0.989; standardized root-mean-square residual, 0.024; root-mean-square error of approximation, 0.059; and factor loadings > 0.65. Patients who registered advance directives ( P < .001) or had the intention ( P < .001) had higher scores of the Advance Care Planning Engagement Survey-9 Korean version than their counterparts. The findings demonstrate that the Advance Care Planning Engagement Survey-9 Korean version was a reliable and valid instrument. Health care providers, including nurses, can use this instrument to assess and manage advance care planning engagement in Korean patients with cardiovascular diseases or metabolic syndrome.
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