Jung Mi Ryu; Myoung Soo Kim

doi:10.12799/jkachn.2017.28.4.366

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Ryu and Kim: Validity and Reliability of the Nurses’ Self-Concept Instrument (NSCI) for Registered Nurses in Long-term Care Hospitals

Original Article

J Korean Acad Community Health Nurs 2017;28(4):366-374.

Published online: 12 December 2017

DOI: https://doi.org/10.12799/jkachn.2017.28.4.366

Validity and Reliability of the Nurses’ Self-Concept Instrument (NSCI) for Registered Nurses in Long-term Care Hospitals

Jung Mi Ryu, Myoung Soo Kim

Department of Nursing, Pukyong National University, Busan, Korea

Corresponding author: Kim, Myoung Soo Department of Nursing, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan 48513, Korea. Tel: +82-51-629-5782, Fax: +82-51-629-5789, E-mail: kanosa@pknu.ac.kr

Received 4 April 2017 Revised 5 September 2017 Accepted 2 October 2017

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

The purpose of this study was to evaluate the validity and reliability of the Korean Version of the Nurses’ Self-Concept Instrument (NSCI) geriatric hospital nurses in Korea.

Methods

Bilingual nursing professionals performed translation and back-translation. Reliability and validity of the content and construction of the instrument were confirmed. Internal consistency reliability was determined. Construction and concurrent validity were verified using factor analysis and correlation coefficients.

Results

The total 14 items for the Korean version of the Nurses’ Self-Concept Instrument (NSCI) were retained through item analysis. In explanatory factor analysis, four subcategories were proposed with their names of each factor: ‘Leadership’, ‘Staff relation’, ‘Knowledge’, and ‘Care’. The four factors accounted for 78.81% of the variances. The Cronbach’s ⍺ regarding internal consistency were .77~.91 for the NSCI subscales. Correlation among four subcategories ranged .62~.84.

Conclusion

The findings show that the Korean version of the Nurses’ Self-Concept Instrument is reliable and valid for measuring professional Self-Concept of geriatric hospital nurses in Korea.

Keywords: Nurse, Self Concept, Psychometrics, Factor analysis

References

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Table 1.

General Characteristics of Nurses (N=159)

Characteristics	Categories	n (%) or M±SD
Gender	Male	3 (1.9)
Gender	Female	156 (98.1)
Age (year)		44.89±10.64
	＜30	13 (8.2)
	30~39	39 (24.5)
	40~49	47 (29.6)
	≥50	60 (37.7)
Educational status	3-year	105 (66.0)
	BSN	48 (30.2)
	≥MSN	6 (3.8)
Monthly income (10,000 won)	150~199	22 (13.8)
	200~249	113 (71.1)
	250~299	17 (10.7)
	≥300	7 (4.4)
Experience on geriatric hospital nursing (year)		2.17±0.69
	＜1	22 (13.8)
	1~4.99	92 (57.9)
	5~9.99	41 (25.8)
	≥10	4 (2.5)
Number of beds	50~99	11 (6.9)
	100~199	31 (19.5)
	200~299	87 (54.7)
	≥300	30 (18.9)

Table 2.

Results of Exploratory Factor Analysis of the 14-items Nurses’ Self-concept Instrument

No	Items	Factor 1	Factor 2	Factor 3	Factor 4
1	I am/will be a good leader of nurses.	.82
4	I enjoy/will enjoy having nursing leadership responsibility.	.82
8	I am/will be a respected nurse team leader.	.80
11	I like/will like leading a nursing team.	.77
2	I like working with my colleagues.		.87
5	I am able to form good working relationships with my colleagues.		.73
9	I am good at helping my colleagues.		.29
13	I am able to master new nursing knowledge.			.85
14	I like having the knowledge to solve nursing problems.			.81
10	I find new nursing knowledge stimulating.			.51
7	I am good at applying my nursing knowledge to patients care.			.27
6	I am proud of the way I care for my patients.				.58
12	I get a lot of enjoyment out of caring for my patients.				.33
3	I care about my patients needs.				.21
Eigen value		3.22	2.76	2.70	2.36
Variance		22.96	19.69	19.28	16.88
Cumulative variance		22.96	42.65	61.93	78.81

Table 3.

Correlations among Subcategories of the Self-concept and Elderly Care Performance

Variables	Self-concept	Leadership	Staff relation	Knowledge	Care	Elderly care performance
Self-concept	1.00
Leadership	.92 (＜.001)	1.00
Staff relation	.88 (＜.001)	.79 (＜.001)	1.00
Knowledge	.87 (＜.001)	.67 (＜.001)	.63 (＜.001)	1.00
Care	.86 (＜.001)	.84 (＜.001)	.65 (＜.001)	.62 (＜.001)	1.00
Elderly care performance	.59 (＜.001)	.56 (＜.001)	.55 (＜.001)	.45 (＜.001)	.53 (＜.001)	1.00

Table 4.

Each Factor's Name, Mean Score and Reliability

Factor	Name (number of items)	M±SD	Cronbach's ⍺ coefficient
Factor 1	Leadership (4)	5.61±1.10	.91
Factor 2	Staff relation (3)	6.30±0.87	.77
Factor 3	Knowledge (4)	6.05±0.92	.87
Factor 4	Care (3)	6.23±0.91	.78
Total	Nurses self-concept (1	4) 6.02±0.84	.94

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