OBJECTIVE: To assess insomnia in a rehabilitation population, the authors examined the utility and validity of the Pittsburgh Sleep Quality Index (PSQI). The assessment of insomnia is relevant to the treatment of traumatic brain injury at the postacute level and routine screening for insomnia may be enhanced by the availability of a standardized, conveniently used, self-report sleep questionnaire. DESIGN: The authors prospectively studied 91 consecutive patients with traumatic brain injury who were admitted to an outpatient neurorehabilitation program. Besides administering the PSQI, Beck Depression Inventory, Epworth Sleepiness Scale, and Multidimensional Pain Inventory, sleep diary and interview data were obtained and used to divide subjects into insomnia and noninsomnia groups according to the criteria established by the Diagnostic and Statistical Manual of Mental Disorders, ed 4. RESULTS: Sensitivity and specificity rates to the clinical diagnosis of insomnia were 93% and 100%, respectively, for a PSQI Global Score of >8, and 83% and 100% for a diagnosis of insomnia based exclusively on PSQI-derived sleep variable data. Sleep diary data provided concurrent validity for PSQI estimates of sleep-onset latency, sleep duration, and sleep efficiency. The Beck Depression Inventory, Epworth Sleepiness Scale, and Multidimensional Pain Inventory established concurrent validity for individual PSQI items pertaining to mood, hypersomnia, and pain disturbance. CONCLUSION: The PSQI was demonstrated to be a valid and useful screening tool for assessing insomnia among postacute patients with traumatic brain injury.
OBJECTIVE: To assess insomnia in a rehabilitation population, the authors examined the utility and validity of the Pittsburgh Sleep Quality Index (PSQI). The assessment of insomnia is relevant to the treatment of traumatic brain injury at the postacute level and routine screening for insomnia may be enhanced by the availability of a standardized, conveniently used, self-report sleep questionnaire. DESIGN: The authors prospectively studied 91 consecutive patients with traumatic brain injury who were admitted to an outpatient neurorehabilitation program. Besides administering the PSQI, Beck Depression Inventory, Epworth Sleepiness Scale, and Multidimensional Pain Inventory, sleep diary and interview data were obtained and used to divide subjects into insomnia and noninsomnia groups according to the criteria established by the Diagnostic and Statistical Manual of Mental Disorders, ed 4. RESULTS: Sensitivity and specificity rates to the clinical diagnosis of insomnia were 93% and 100%, respectively, for a PSQI Global Score of >8, and 83% and 100% for a diagnosis of insomnia based exclusively on PSQI-derived sleep variable data. Sleep diary data provided concurrent validity for PSQI estimates of sleep-onset latency, sleep duration, and sleep efficiency. The Beck Depression Inventory, Epworth Sleepiness Scale, and Multidimensional Pain Inventory established concurrent validity for individual PSQI items pertaining to mood, hypersomnia, and pain disturbance. CONCLUSION: The PSQI was demonstrated to be a valid and useful screening tool for assessing insomnia among postacute patients with traumatic brain injury.
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