Report Viewer

NINDS CDE Notice of Copyright
Insomnia Severity Index (ISI)

Please email  the authors for information about obtaining the instrument:

Supplemental: Parkinson's Disease (PD)
Short Description of Instrument
The Insomnia Severity Index is a brief 7 question self-report instrument that measures the patient's perception of insomnia.
The questionnaire includes 7 items rated on a 0-4 scale that evaluate the severity of sleep initiation, the sleep maintenance, and other aspects related to insomnia during the past two weeks.
Bastien CH, Vallieres A, Morin CM. Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Med 2001;2:297-307.