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Measurement properties of the Minimal Insomnia Symptom Scale (MISS) in an elderly population in Sweden
Blekinge Institute of Technology, Sweden ; Lund University, Sweden.
Lund University, Sweden.
Blekinge Institute of Technology, Sweden.
Blekinge Institute of Technology, Sweden.
2010 (English)In: BMC Geriatrics, ISSN 1471-2318, E-ISSN 1471-2318, Vol. 10, 84Article in journal (Refereed) Published
Abstract [en]

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
Springer, 2010. Vol. 10, 84
National Category
Nursing
Research subject
Health and Caring Sciences, Nursing
Identifiers
URN: urn:nbn:se:lnu:diva-42150DOI: 10.1186/1471-2318-10-84OAI: oai:DiVA.org:lnu-42150DiVA: diva2:801922
Available from: 2015-04-10 Created: 2015-04-10 Last updated: 2017-12-04Bibliographically approved

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