Measurement properties of the Minimal Insomnia Symptom Scale (MISS) in an elderly population in Sweden.
Blekinge Institute of Technology, School of Health Science2010 (English)In: BMC Geriatrics, ISSN 1471-2318, Vol. 10:84Article in journal (Refereed) Published
Background: Insomnia is common among elderly people and associated with poor health. The Minimal Insomnia Symptom Scale (MISS) is a three item screening instrument that has been found to be psychometrically sound and capable of identifying insomnia in the general population (20-64 years). However, its measurement properties have not been studied in an elderly population. Our aim was to test the measurement properties of the MISS among people aged 65 + in Sweden, by replicating the original study in an elderly sample. Methods: Data from a cross-sectional survey of 548 elderly individuals were analysed in terms of assumptions of summation of items, floor/ceiling effects, reliability and optimal cut-off score by means of ROC-curve analysis and compared with self-reported insomnia criteria. Results: Corrected item-total correlations ranged between 0.64-0.70, floor/ceiling effects were 6.6/0.6% and reliability was 0.81. ROC analysis identified the optimal cut-off score as ≥7 (sensitivity, 0.93; specificity, 0.84; positive/negative predictive values, 0.256/0.995). Using this cut-off score, the prevalence of insomnia in the study sample was 21.7% and most frequent among women and the oldest old. Conclusions: Data support the measurement properties of the MISS as a possible insomnia screening instrument for elderly persons. This study make evident that the MISS is useful for identifying elderly people with insomnia-like sleep problems. Further studies are needed to assess its usefulness in identifying clinically defined insomnia.
Place, publisher, year, edition, pages
BioMed-Central , 2010. Vol. 10:84
Nursing Public Health, Global Health, Social Medicine and Epidemiology
IdentifiersURN: urn:nbn:se:bth-7648DOI: 10.1186/1471-2318-10-84Local ID: oai:bth.se:forskinfoC55087ABA104C036C125780D003A86A6OAI: oai:DiVA.org:bth-7648DiVA: diva2:835292
Open access journal2012-09-182011-01-032015-06-30Bibliographically approved