Nonrestorative sleep refers to the experience of sleep as insufficiently refreshing, often despite the appearance of normal sleep according to objective parameters. As a result, a valid and reliable measure of the subjective experience of NRS is required in order to allow for standardization and comparability in its assessment. This thesis reports the results of a study involving the development and validation of a scale to assess NRS, the Nonrestorative Sleep Scale (NRSS). The psychometric properties of the NRSS were assessed in a group of 256 participants recruited from a sleep clinic population. Principal component analysis revealed four domains. The scale demonstrated good internal and test-retest reliability and reasonable validity compared to other measures. Overnight polysomnographic variables were also compared to scores on the scale and a few were found to be weakly correlated with scale scores. These included alpha EEG, sleep efficiency, and REM latency.
| Identifer | oai:union.ndltd.org:TORONTO/oai:tspace.library.utoronto.ca:1807/32639 |
| Date | 17 August 2012 |
| Creators | Wilkinson, Kate |
| Contributors | Shapiro, Colin M. |
| Source Sets | University of Toronto |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
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