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Jo: Development and Evaluation of Shared Medical Decision-Making Scale for End-of-Life Patients in Korea
Original Article
Journal of Korean Academy of Nursing

Journal of Korean Academy of Nursing 2012; 42(4): 453-465.

Published online: 31 August 2012

DOI: https://doi.org/10.4040/jkan.2012.42.4.453

Development and Evaluation of Shared Medical Decision-Making Scale for End-of-Life Patients in Korea

Kae Hwa Jo

Catholic University of Daegu, College of Nursing, Daegu, Korea.

Address reprint requests to: Jo, Kae Hwa. College of Nursing, Catholic University of Daegu, 3056-6 Daemyung 4-dong, Nam-gu, Daegu 705-718, Korea. Tel: +82-53-650-4825, Fax: +82-53-650-4392, jokw@cu.ac.kr

Received 11 January 2012       Accepted 9 July 2012

© 2012 Korean Society of Nursing Science

Abstract

Purpose

The study was done to develop a shared decision-making scale for end-of-life patients in Korea.

Methods

The process included construction of a conceptual framework, generation of initial items, verification of content validity, selection of secondary items, preliminary study, and extraction of final items. The participants were 388 adults who lived in one of 3 Korean metropolitan cities: Seoul, Daegu, or Busan. Item analysis, factor analysis, criterion related validity, and internal consistency were used to analyze the data. Data collection was done from July to October 2011.

Results

Thirty-four items were selected for the final scale, and categorized into 7 factors explaining 61.9% of the total variance. The factors were labeled as sharing information (9 items), constructing system (7 items), explanation as a duty (5 items), autonomy (4 items), capturing time (3 items), participation of family (3 items), and human respect (3 items). The scores for the scale were significantly correlated among shared decision-making scale, terminating life support scale, and dignified dying scale. Cronbach's alpha coefficient for the 34 items was .94.

Conclusion

The above findings indicate that the shared decision-making scale has a good validity and reliability when used for end-of-life patients in Korea.

Keywords: Medical, Decision-Making, Scale, End-of-Life, Korea

Figures and Tables

Figure 1
Conceptual framework of SDM for the patient in end-of-life.
jkan-42-453-g001
Table 1
Item Analysis (N=388)
jkan-42-453-i001

Item deleted by item analysis.

Table 2
Factor Analysis and Reliability (N=388)
jkan-42-453-i002

Kaiser-Meyer-Olkin (KMO)=.94; Bartlett's test of sphericity: χ2=10,388.58; p<.001; Cronbach's α=.94.

Table 3
Correlation among Shared Decision Making Scale, Terminating Life Support Scale, and Dignified Dying Scale (N=388)
jkan-42-453-i003

SDM=Shared decision making.

Notes

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-0004953).

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