J Korean Acad Nurs.  2012 Dec;42(6):853-860. 10.4040/jkan.2012.42.6.853.

Psychometric Properties of Korean Minimal Insomnia Screening Scale

• Kim I
• Kim S
• Kim B
• Choi H

• KMID: 1499512
• DOI: http://doi.org/10.4040/jkan.2012.42.6.853

Abstract

PURPOSE
The purposes of this study were to develop a Minimal Insomnia Screening Scale for Korean adults (KMISS) and to evaluate psychometric properties and discriminant ability of the developed scale.
METHODS
Data from a cross-sectional survey of 959 Korean adults were analyzed to develop the summated insomnia scale, which was evaluated in terms of reliability, validity, and discriminant ability by receiver operating characteristics (ROC) curve analysis.
RESULTS
Item-total correlations ranged between .71-.79 and Cronbach's alpha was .87. Adequate validity was also evident. ROC-curve analysis showed area under ROC was .87 (95% CI: .84-.90) and identified the optimal cut-off score as < or = 20 (sensitivity, .83; specificity, .75; positive/negative predictive values, .40/.95). Using this cut-off score, the prevalence of insomnia in the study sample was 26.3% and most frequent among women and the oldest group.
CONCLUSION
Data supports the psychometric properties of KMISS as a possible insomnia screening instrument. KMISS also shows promise as a convenient ultra-short screening measure of insomnia for adults and epidemiological studies in community health care settings.

Keyword

Sleep; Self-report; Questionnaire; Psychometrics

MeSH Terms

Aged
Area Under Curve
Asian Continental Ancestry Group
Cross-Sectional Studies
Female
Health Status
Humans
Male
Middle Aged
Prevalence
*Psychometrics
Quality of Life
Questionnaires
ROC Curve
Republic of Korea
Self Report
Sex Factors
Sleep Initiation and Maintenance Disorders/*epidemiology/pathology

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