Journal List > J Korean Acad Nurs > v.42(4) > 1002825

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

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.

Figures and Tables

Figure 1
Conceptual framework of SDM for the patient in end-of-life.
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Table 1
Item Analysis (N=388)
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Item deleted by item analysis.

Table 2
Factor Analysis and Reliability (N=388)
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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)
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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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