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Original Article
- Psychometric Properties and Item Evaluation of Korean Version of Night Eating Questionnaire (KNEQ)
- Beomjong Kim, Inja Kim, Heejung Choi
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Journal of Korean Academy of Nursing 2016;46(1):109-117.
DOI: https://doi.org/10.4040/jkan.2016.46.1.109
Published online: February 29, 2016
1Department of Business Administration, Seowon University, Cheongju, Korea.
2Department of Nursing, Daejeon University, Daejeon, Korea.
3Department of Nursing, Konkuk University, Chungju, Korea.
- Address reprint requests to: Choi, Heejung. Department of Nursing, Konkuk University, 268 Chungwon-daero, Chungju 27478, Korea. Tel: +82-43-840-3954, Fax: +82-43-840-9329, hjchoi98@kku.ac.kr
• Received: July 14, 2015 • Revised: July 23, 2015 • Accepted: November 2, 2015
© 2016 Korean Society of Nursing Science
This is an Open Access article distributed under the terms of the Creative Commons Attribution NoDerivs License. (http://creativecommons.org/licenses/by-nd/4.0/) If the original work is properly cited and retained without any modification or reproduction, it can be used and re-distributed in any format and medium.
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Abstract
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Purpose
- The aim of this study was to develop a Korean version of Night Eating Questionnaire (KNEQ) and test its psychometric properties and evaluate items according to item response theory.
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Methods
- The 14-item NEQ as a measure of severity of the night eating syndrome was translated into Korean, and then this KNEQ was evaluated. A total of 1171 participants aged 20 to 50 completed the KNEQ on the Internet. To test reliability and validity, Cronbach's alpha, correlation, simple regression, and factor analysis were used. Each item was analyzed according to Rasch-Andrich rating scale model and item difficulty, discrimination, infit/outfit, and point measure correlation were evaluated.
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Results
- Construct validity was evident. Cronbach's alpha was .78. The items of evening hyperphagia and nocturnal ingestion showed high ability in discriminating people with night eating syndrome, while items of morning anorexia and mood/sleep provided relatively little information. The results of item analysis showed that item2 and item7 needed to be revised to improve the reliability of KNEQ.
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Conclusion
- KNEQ is an appropriate instrument to measure severity of night eating syndrome with good validity and reliability. However, further studies are needed to find cut-off scores to screen persons with night eating syndrome.
This study was supported by Kuhnil Phamaceutical Co., Ltd. 2013.
The authors declared no conflict of interest.
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REFERENCES
Table 2
Rotated Factor Loading Matrix (N=1,162)
*Item 13 for differential diagnosis was deleted from analysis; Item1: How hungry are you usually in the morning?; Item 2: When do you usually eat for the first time?; Item 3: Do you have cravings or urges to eat snacks after supper, but before bedtime?; Item 4: How much control do you have over your eating between supper and bedtime?; Item 5: How much of your daily food intake do you consume after suppertime?; Item 6: Are you currently feeling blue or down in the dumps?; Item 7: When are you feeling blue, is your mood lower in the: ; Item 8: How often do you have trouble getting to sleep?; Item 9: Other than only to use the bathroom, how often do you get up at least once in the middle of the night?; Item 10: Do you have cravings or urges to eat snacks when you wake up at night?; Item 11: Do you need to eat in order to get back to sleep when you wake at night?; Item 12: When you get up in the middle of the night, how often do you snack?; Item 13: When you snack in the middle of the night, how aware are you of your eating?; Item 14: How much control do you have over your eating while you are up at night?.
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Figure 1
Measurement model for night eating syndrome.
Figure 1
Psychometric Properties and Item Evaluation of Korean Version of Night Eating Questionnaire (KNEQ)
Characteristics of Participants (N=1,171)
BMI=Body mass index; KNEQ=Korean version of Night Eating Questionnaire.
Rotated Factor Loading Matrix (N=1,162)
*Item 13 for differential diagnosis was deleted from analysis; Item1: How hungry are you usually in the morning?; Item 2: When do you usually eat for the first time?; Item 3: Do you have cravings or urges to eat snacks after supper, but before bedtime?; Item 4: How much control do you have over your eating between supper and bedtime?; Item 5: How much of your daily food intake do you consume after suppertime?; Item 6: Are you currently feeling blue or down in the dumps?; Item 7: When are you feeling blue, is your mood lower in the: ; Item 8: How often do you have trouble getting to sleep?; Item 9: Other than only to use the bathroom, how often do you get up at least once in the middle of the night?; Item 10: Do you have cravings or urges to eat snacks when you wake up at night?; Item 11: Do you need to eat in order to get back to sleep when you wake at night?; Item 12: When you get up in the middle of the night, how often do you snack?; Item 13: When you snack in the middle of the night, how aware are you of your eating?; Item 14: How much control do you have over your eating while you are up at night?.
Results of Item Analysis (N=1,162)
*Item 13 for differential diagnosis was deleted from analysis.
Table 1
Characteristics of Participants (N=1,171)
BMI=Body mass index; KNEQ=Korean version of Night Eating Questionnaire.
Table 2
Rotated Factor Loading Matrix (N=1,162)
*Item 13 for differential diagnosis was deleted from analysis; Item1: How hungry are you usually in the morning?; Item 2: When do you usually eat for the first time?; Item 3: Do you have cravings or urges to eat snacks after supper, but before bedtime?; Item 4: How much control do you have over your eating between supper and bedtime?; Item 5: How much of your daily food intake do you consume after suppertime?; Item 6: Are you currently feeling blue or down in the dumps?; Item 7: When are you feeling blue, is your mood lower in the: ; Item 8: How often do you have trouble getting to sleep?; Item 9: Other than only to use the bathroom, how often do you get up at least once in the middle of the night?; Item 10: Do you have cravings or urges to eat snacks when you wake up at night?; Item 11: Do you need to eat in order to get back to sleep when you wake at night?; Item 12: When you get up in the middle of the night, how often do you snack?; Item 13: When you snack in the middle of the night, how aware are you of your eating?; Item 14: How much control do you have over your eating while you are up at night?.
Table 3
Results of Item Analysis (N=1,162)
*Item 13 for differential diagnosis was deleted from analysis.
