[Psychometric properties of Korean Minimal Insomnia Screening Scale].
OBJECTIVE
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 α 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 ≤ 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.


CONCLUSIONS
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.
Department of Nursing, Daejeon University, Daejeon, Korea.
Inja
I
Kim
Sungjae
S
Kim
Beomjong
B
Kim
Heejung
H
Choi
D000368:Aged; D019540:Area Under Curve; D044466:Asian People; D003430:Cross-Sectional Studies; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D011594:Psychometrics; D011788:Quality of Life; D012372:ROC Curve; D056910:Republic of Korea; D057566:Self Report; D012737:Sex Factors; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology* / Q000473:pathology; D011795:Surveys and Questionnaires
Psychometrics; Questionnaire; Self-report; Sleep