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Development of a Measurement of Suicidal Protection (MSP) for High School Students in Korea

Article information

Res Community Public Health Nurs. 2019;30(2):161-173
Publication date (electronic) : 2019 June 28
doi : https://doi.org/10.12799/jkachn.2019.30.2.161
Chan Sun Park1orcid_icon, Sook Ja Yang2orcid_icon
1Assistant Professor, Daedong College, Busan, Korea.
2Professor, College of Nursing, Ewha Womans University, Seoul, Korea.
Corresponding author: Yang, Sook-Ja. College of Nursing, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Korea. Tel: +82-2-3277-4652, Fax: +82-2-3277-2850, yangsj@ewha.ac.kr
Received 2018 November 29; Revised 2019 April 18; Accepted 2019 April 22.

Abstract

Purpose

This study was conducted to develop and test a measurement of the suicidal protection(MSP) for high school students in Korea.

Methods

Thirty-four preliminary items were initially developed based on literature review and focus group interviews. Those items were evaluated by experts for content validity with 31 items yielded. For testing validity and reliability of the measurement, data were collected from 330 high school students in Korea.

Results

The item analysis selected 26 items. One item was deleted additionally through the primary exploratory factor analysis. The final exploratory factor analysis yielded 26 items in six factors such as fear of suicide, self-esteem, emotion regulation, support from others, support from family, and school life, explaining 66.6% of the total variance of the suicidal protection for high school students in Korea. Convergent validity and discriminant validity were supported by construct reliability, average variance extracted estimate, and standardized regression weight. MSP scores were positively associated with economic status, academic record and suicidal ideation. Also, criterion validity was supported through a significant correlation with the Reason for Living Inventory for Adolescent. The Cronbach's α reliability coefficient was .93 for the overall measurement and .72~.86 for the six factors.

Conclusion

The results show that MSP may be valid and reliable for assessing suicidal protection of high school students.

Keywords: Students; Suicide; Epidemiologic measurements

Notes

This article is based on a part of the first author's doctoral thesis from Ewha Womans University.

Appendices

Appendix 1

Measurement of Suicidal Protection (MSP)

References

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Article information Continued

© 2019 Korean Academy of Community Health Nursing
Korean Academy of Community Health Nursing

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.

Table 1

General Characteristics of Study Participants (N=330)

Table 1

Table 2

Factor Analysis of Measurement of Suicidal Protection Items (N=330)

Table 2

Comm.=Communality; KMO=Kaiser-Meyer-Olkin; †Reverse-scored items.

Table 3

Group Comparisons between MSP and Academic Performance, Economic Status, and Suicidal Ideation for 12 Month (N=330)

Table 3

MSP=measurement of suicidal protection.

Table 4

SRW, AVE, CR and Model Fitness according to the CFA

Table 4

SRW=standardized regression weight; AVE=average variance extracted estimate; CR=construct reliability; CFA=confirmatory factor; RMSEA=root mean square error of approximation; NFI=normed fit index; CFI=comparative fit index; †The reverse-scored items.

Table 5

Discriminant Validity by AVE

Table 5

AVE=average variance extracted estimate; ‡Squared correlation.