Reliability and Validity of the Korean Version of the Contraceptive Self-efficacy Scale: Focused on Women University Students

Kyeha Kim; Euna Cho

doi:10.4069/kjwhn.2016.22.3.151

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Kim and Cho: Reliability and Validity of the Korean Version of the Contraceptive Self-efficacy Scale: Focused on Women University Students

Original Article

Korean J Women Health Nurs 2016;22(3):151-161.

Published online: 17 September 2016

DOI: https://doi.org/10.4069/kjwhn.2016.22.3.151

Reliability and Validity of the Korean Version of the Contraceptive Self-efficacy Scale: Focused on Women University Students

Kyeha Kim¹, Euna Cho^2,

¹Department of Nursing, Chosun University, Gwangju, Korea

²Department of Nursing, Honam University, Gwangju, Korea

Corresponding author: Cho, Euna Department of Nursing, Honam University, 417 Eodeung-daero, Gwangsan-gu, Gwangju 62399, Korea. Tel: +82-62-940-5549, Fax: +82-62-940-5196, E-mail: jouoa@honam.ac.kr

Received 13 May 201613 July 2016 Accepted 2 August 2016

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 develop and test the validity and reliability of the Korean version of the Contraceptive Self-efficacy (K-CSE) scale.

Methods

The K-CSE scale was developed through forward-backward translation methods. Construct and criterion validity and internal consistency reliability were calculated using SPSS/WIN 21.0. Data were collected from 257 women students from two universities in G city, South Korea.

Results

The factor structure of the K-CSE scale showed the cumulative variance as 62.9% in the factor analysis. Factor loading of 13 items on four subscales ranged from .47 to .88. Factors were named as 'initiative of contraceptive use', 'sexual assertiveness', 'refusal of sexual intercourse', and 'autonomic sexual behavior'. Criterion validity compared to the Sexual Autonomy Measurement (SAM) showed significant correlation. Cronbach's ⍺ for the reliability of each subscale were .50~.82 and .76 for the total scale.

Conclusion

The findings of this study demonstrate that the K-CSE scale is a satisfactory valid and reliable scale. Therefore, the CSE scale can be useful in measuring contraceptive self-efficacy among women university students in Korea.

Keywords: Contraception, Self-efficacy, Validity and reliability

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Table 1.

Items Analysis of Korean version of Contraceptive Self-efficacy (K-CSE) Scale (N=257)

Items	M±SD	Correlated item-total correlation
1. Be responsible for sexual activity	3.04±1.07	.19
2. Tell a man how I feel	4.00±1.20	.34
3. Enjoy sex	2.90±1.00	.28
4. Say “No”	4.21±0.95	.35
5. Talk about sex with resistant boyfriend	3.11±1.22	.30
6. Can't consciously have sex	2.30±1.12	-.06
7. When aroused stop things before intercourse	4.05±0.94	.23
8. When aroused have sex without protection	4.32±1.04	.14
9. Give over control because of hassle	4.11±1.05	.26
10. Could initiate sexual overtures	2.29±1.24	-.00
11. Couldn't use birth control because of parents	3.90±1.25	.27
12. Embarrassed to ask for birth control at drugstore	3.00±1.40	.14
13a. When aroused, could ask about protection	4.19±0.96	.55
13b. When aroused, could put in form	3.81±1.11	.41
13c. When aroused, could tell partner about pill	3.97±1.04	.50
13d. When aroused, could stop coitus	4.04±0.99	.48
14. Discuss contraception in the situation	4.24±0.97	.49
15. Have undesired sex due to lack of assertiveness	4.35±0.97	.39

Table 2.

Factor Loading of Korean version of Contraceptive Self-efficacy (K-CSE) Items (N=257)

Items	Factor 1	Factor 2	Factor 3	Factor 4
13b. If my boyfriend and I were getting really heavy into sex and moving towards intercourse and I wasn't protected… I could excuse myself to put in diaphragm or foam(if I used them for birth control).	.88
13c. I could tell him that I was on the pill or had an IUD(if I used them for birth control).	.85
13a. I could easily ask him if he had protection(or tell him that I didn't)	.73
15. Sometimes I end up having sex with a boyfriend because I can't find a way to stop it.		.84
9. Sometimes I just go along with my date wants to do sexually because I don't think I can take the hassle of trying to say what I want.		.78
14. There are times when I should talk to my boyfriend about using contraceptive; but, I can't seem to do it in the situation.		.66
7. If my boyfriend and I are getting " turned-on" sexually and I didn't really want to have sexual intercourse (go-all-the-way, get-down), I can easily stop things so that we don't have intercourse.			.80
4. If my boyfriend and I are getting "turned-on" sexually and I don't really want to have sexual intercourse (go-all-the-way, get-down), I can easily tell him "No" and mean it			.78
13d. I could stop things before intercourse, if I couldn't bring up a subjects of protection.			.55
5. If my boyfriend didn't talk about the sex that was happening between us, I couldn't either				.69
3. When I have sex, I can enjoy it as something that I really wanted to do.				.67
2. Even if boyfriend can talk about sex, I can't tell a man how I really feel about sexual things				.62
11. I couldn't continue to use a birth control method if I thought my parents might find out.				.47
Eigen value	2.52	2.12	1.87	1.68
Explained variance (%)	19.37	16.27	14.37	12.88
Cumulative %	19.37	35.64	50.02	62.90

Kaiser-Mayer-Olkin (KMO)=.78; Bartlett test of sphericity x²=932.81 (p＜.001).

Table 3.

Relationship between Korean Version of Contraceptive Self-efficacy (K-CSE) Scale and Sexual Autonomy Measurement (N=257)

Factor	Sexual autonomy	measurement
Factor	r	p
K-CSE	.59	＜.001
Factor 1	.48	＜.001
Factor 2	.35	＜.001
Factor 3	.59	＜.001
Factor 4	.27	＜.001

K-CSE=Korean contraceptive self efficacy; Factor 1 includes item 13a, 13b, 13c; Factor 2 includes item 9, 14, 15; Factor 3 includes item 4, 7, 13d; Factor 4 includes item 2, 3, 5, 11.

Table 4.

Reliability for Korean Version of Contraceptive Self-efficacy (K-CSE) Subscales (N=257)

Factor	Cronbach's ⍺
Factor 1	.82
Factor 2	.73
Factor 3	.72
Factor 4	.50

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