Psychometric Testing of the Korean Version of the Attitudes toward the Advance Directives in Low-Income Chronically Ill Older Adults

Abstract

The purpose of this study was to examine the psychometric properties of the Advance Directive Attitude Survey in Korean (K-ADAS), a measure of attitudes toward advance directives (ADs). A total of 118 low-income, community-dwelling older adults (mean age, 75.09 years) participated. An exploratory factor analysis (EFA) was conducted to determine the factor structure of the K-ADAS. Validity was further assessed by known associations of the K-ADAS with perceived susceptibility and severity using part of the Advance Care Planning surveys. Its reliability was examined by calculating alpha coefficients. EFA determined a three-factor structure model with good model fit. Validity was further supported with significant correlations between the K-ADAS and susceptibility and severity. Reliability was supported by adequate level of Cronbach’s alpha. The K-ADAS was a valid and reliable measure for assessment of AD attitudes with a sound model fit. Thus, the K-ADAS can be used to assess AD attitudes among community-dwelling elders.

Awareness and Attitudes towards Advance Care Directives (ACDs): An Online Survey of Portuguese Adults

“…Statements were constructed based on previous literature [26,27]. The internal consistency of the instrument was analysed using the Kuder-Richardson Formula 20 (KR-20) coefficient.…”

Emergency Healthcare Providers’ Knowledge about and Attitudes toward Advance Directives: A Cross-Sectional Study between Nurses and Emergency Medical Technicians at an Emergency Department

“…Attitudes were assessed using the Korean version of the 16-item Advance Directive Attitude Survey (K-ADAS) [36]. The extent of an individual's positive-negative posits for ADs was assessed on a four-point Likert scale of each item (1 = strongly disagree; 4 = strongly agree) in four sections [37].…”

“…The possible scores ranged from 16 to 64, with a higher score indicating greater positive attitudes toward ADs. Reliability of the K-ADAS was desirable, with a Cronbach's alpha of 0.80 [36].…”

The Perimenopausal Fatigue Self-Management Scale Is Suitable for Evaluating Perimenopausal Taiwanese Women’s Vulnerability to Fatigue Syndrome

“…Cronbach’s α was 0.78 and its corrected total-item correlation was >0.50, indicating that the P-MFSMS reached acceptable reliability [ 29 , 30 , 31 ]. There are different reports about the acceptable values of α, ranging from 0.70 to 0.95, and a low α appears if the assumptions of the essentially tau-equivalent approach are not met, but a high value of α (≥0.90) may suggest redundancies and show that the test length can be shortened [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 ].…”