Protocol - Insomnia
The Insomnia Severity Index (ISI) is a brief, self-administered questionnaire that captures the respondent’s perception of his or her current insomnia. The ISI has been used with adolescents and adults. The ISI includes seven items that assess severity of sleep onset, sleep maintenance, and early morning awakening problems; sleep dissatisfaction; interference of sleep difficulties with daytime functioning; noticeability of sleep problems by others; and distress caused by the sleep difficulties. Each item is rated on a 4-point Likert scale, and the total score ranges from 0 to 28. A higher score suggests more severe insomnia.
The Working Group notes that the time frame assessed can be altered (e.g., last month, last 2 weeks, etc.).
Insomnia Severity Index
For each question, please CIRCLE the number that best describes your answer.
Please rate the CURRENT (i.e. LAST 2 WEEKS) SEVERITY of your insomnia problem(s).
1. Difficulty falling asleep
2. Difficulty staying asleep
3. Problems waking up too early
4. How SATISFIED/DISSATISFIED are you with your CURRENT sleep pattern?
0[ ]Very Satisfied
2[ ]Moderately Satisfied
4[ ]Very Dissatisfied
5. How NOTICEABLE to others do you think your sleep problem is in terms of impairing the quality of your life?
0[ ]Not at all Noticeable
1[ ]A Little
4[ ]Very Much Noticeable
6. How WORRIED/DISTRESSED are you about your current sleep problem?
0[ ]Not at all Worried
1[ ]A Little
4[ ]Very Much Worried
7. To what extent do you consider your sleep problem to INTERFERE with your daily functioning (e.g. daytime fatigue, mood, ability to function at work/daily chores, concentration, memory, mood, etc.) CURRENTLY?
0[ ]Not at all Interfering
1[ ]A Little
4[ ]Very Much Interfering
Guidelines for Scoring/Interpretation:
Add the scores for all seven items (questions 1 + 2 + 3 + 4 + 5 +6 + 7) = _______ your total score
Total score categories:
0-7 = No clinically significant insomnia
8-14 = Sub-threshold insomnia
15-21 = Clinical insomnia (moderate severity)
22-28 = Clinical insomnia (severe)
Personnel and Training Required
|Specialized requirements for biospecimen collection||No|
|Average time of greater than 15 minutes in an unaffected individual||No|
Mode of Administration
Adolescents and adults, ages 12 and older
The Insomnia Severity Index (ISI) is a widely used, well-accepted questionnaire with strong internal consistency, reliability, and convergent validity.
|Human Phenotype Ontology||Insomnia||HP:0100785||HPO|
|caDSR Form||PhenX PX640801 - Insomnia||6234260||caDSR Form|
Process and Review
Protocol Name from Source
The Insomnia Severity Index (ISI)
Bastien, C. H., Vallières, A., & Morin, C. M. (2001). Validation of the Insomnia Severity Index as an outcome measure for insomnia research. Sleep Medicine, 2(4), 297-307.
Bernert, R. A., Joiner, T. E., Jr., Cukrowicz, K. C., Schmidt, N. B., & Krakow, B. (2005). Suicidality and sleep disturbances. Sleep, 28(9), 1135-1141.
Krakow, B., Ribeiro, J. D., Ulibarri, V. A., Krakow, J., & Joiner, T. E., Jr. (2011). Sleep disturbances and suicidal ideation in sleep medical center patients. Journal of Affective Disorders 131(1-3), 422-427.
McCall, W. V., Blocker, J. N., D’Agostino, R., Jr., Kimball, J., Boggs, N., Lasater, B., & Rosenquist, P. B. (2010). Insomnia severity is an indicator of suicidal ideation during a depression clinical trial. Sleep Medicine, 11(9), 822-827.
Morin, C. M., Belleville, G., Bélanger, L., & Ivers, H. (2011). The Insomnia Severity Index: Psychometric indicators to detect insomnia cases and evaluate treatment response. Sleep 34(5), 601-608.
Ribeiro, J. D., Pease, J. L., Gutierrez, P. M., Silva, C., Bernert, R. A., Rudd, M. D., & Joiner, T. E., Jr. (2012). Sleep problems outperform depression and hopelessness as cross-sectional and longitudinal predictors of suicidal ideation and behavior in young adults in the military. Journal of Affective Disorders 136(3), 743-750.
|Variable Name||Variable ID||Variable Description||dbGaP Mapping|
|PX640801010100||Please rate the CURRENT (i.e. LAST 2 WEEKS) more||N/A|
|PX640801010700||To what extent do you consider your sleep more||N/A|
|PX640801010500||How NOTICEABLE to others do you think your more||N/A|
|PX640801010400||How SATISFIED/DISSATISFIED are you with your more||N/A|
|PX640801010800||Add the scores for all seven items more||N/A|
|PX640801010200||Please rate the CURRENT (i.e. LAST 2 WEEKS) more||N/A|
|PX640801010300||Please rate the CURRENT (i.e. LAST 2 WEEKS) more||N/A|
|PX640801010600||How WORRIED/DISTRESSED are you about your more||N/A|
November 21, 2014
A questionnaire to assess insomnia and sleep disturbance.
Sleep disturbances impact perceived overall health quality and are modifiable risk factors for a variety of mental health conditions such as depression, anxiety, and suicidal ideation and behaviors.
insomnia, insomnia, Sleep, sleep disturbance, Insomnia Severity Index, ISI
|Protocol ID||Protocol Name|
Goodman, M., et al. (2020) Group (?Project Life Force?) versus individual suicide safety planning: A randomized clinical trial. Contemporary Clinical Trials Communications. 2020 January; 17: 100520. doi: 10.1016/j.conctc.2020.100520