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Kim, Nam, Lee, and Jeong: Validity and Reliability of the Korean Version of the Expanded Nursing Stress Scale
Original Article

Journal of Korean Academy of Nursing Administration 2015; 21(5): 542-551.

Published online: 31 December 2015

DOI: https://doi.org/10.11111/jkana.2015.21.5.542

Validity and Reliability of the Korean Version of the Expanded Nursing Stress Scale

Kyoung Mi Kim1, Kyoung A Nam2, Eunhee Lee2, Geum Hee Jeong2

1College of Nursing, Hanyang University, Korea.

2Division of Nursing, Hallym University, Korea.

Corresponding author: Jeong, Geum Hee. Division of Nursing, Hallym University, 1 Hallymdaehak-gil, Chuncheon 200-702, Korea. Tel: +82-33-248-2713, Fax: +82-33-248-2734, ghjeong@hallym.ac.kr

Received 25 October 2015       Revised 8 December 2015       Accepted 9 December 2015

Copyright © 2015 Korean Academy of Nursing Administration

(open-access):

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Purpose

This study was done to evaluate validity and reliability of the Korean version of the expanded nursing stress scale (ENSS).

Methods

Forward-backward translation of ENSS from English to Korean was conducted. The translated instrument was pilot-tested and administrated to 285 nurses who worked in five general hospitals in Korea. Internal consistency reliability was assessed using Cronbach's α and composite reliability. Validity was evaluated through construct validity with confirmatory factor analysis, convergent and discriminant validity.

Results

The Korean version of ENSS showed a reliable internal consistency with Cronbach's α.95 and composite reliability .99. Model fit indexes for 46 items were validated by confirmatory factor analysis(goodness of fit index .82, Tucker-Lewis index .92, root mean square error of approximation .04), indicating suitable construct validity. Factor loading of the 48 items (.47~.88) and average variance extracted out of nine factors (.52~.71.) indicated satisfactory convergent validity. Some values of square of the correlation coefficient between factors (.12~.89) were higher than average variance extracted values of each factor (.52~.71) so that it partly satisfied discriminant validity.

Conclusion

Findings show that the Korean version ENSS has good reliability and suitable validity; therefore, can be used to assess and identify Korean nurses' job stress.

Keywords: Nurses, Psychological stress, Statistical factor analysis, Translations

Figures and Tables

Table 1

Characteristics of Participants (N=285)

jkana-21-542-i001

BSN=Bachelor of Science in Nursing

Table 2

Model Fitness Test Results from Confirmatory Factor Analysis (N=285)

jkana-21-542-i002

Criteria: GFI≥.90, TLI≥.90, CFI≥.90, RMSEA≤.10; GIF=goodness of fit index; TLI=Tucker-Lewis index; CFI=comparative fit index; RMSEA=root mean square error of approximation.

Table 3

Factor Loading and AVE of ENSS (N=285)

jkana-21-542-i003

AVE=Average variance extracted; *Original item: experiencing discrimination because of race or ethnicity.

Table 4

Intercorrelation with ENSS Subscales (N=285)

jkana-21-542-i004

ENSS=Expanded nursing stress scale.

Table 5

Reliability of ENSS (N=285)

jkana-21-542-i005

ENSS=Expanded nursing stress scale.

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