Christopher N Kaufmann1,2,3, Henry J Orff1,4, Raeanne C Moore1,2,3, Lisa Delano-Wood1,2,4, Colin A Depp1,2,3, Dawn M Schiehser1,2,4. 1. a Veterans Administration San Diego Healthcare System , La Jolla , California. 2. b Department of Psychiatry , University of California , San Diego , La Jolla , California. 3. c Stein Institute for Research on Aging , University of California , San Diego , La Jolla , California. 4. d Center of Excellence for Stress and Mental Health , Veterans Administration San Diego Healthcare System , La Jolla , California.
Abstract
OBJECTIVE/ BACKGROUND: The Insomnia Severity Index (ISI) is a widely used self-report measure of insomnia symptoms. However, to date this measure has not been validated or well-characterized in veterans who have experienced traumatic brain injury (TBI). This study assessed the psychometric properties and convergent, divergent, construct, and discriminate validity of the ISI in veterans with a history of TBI. PARTICIPANTS: Eighty-three veterans with history of TBI were seen in the VA San Diego Healthcare System as part of a research protocol. METHODS: Measures included the ISI, Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale, Neurobehavioral Symptom Inventory, Beck Depression Inventory-II, Beck Anxiety Inventory, and PTSD Checklist-Military Version. RESULTS: The ISI demonstrated moderate to strong or excellent convergent and divergent validity. A principal component analysis indicated a single construct with excellent internal consistency (Cronbach's alpha = 0.92). In exploratory analyses, the ISI discriminated well between those with (73%) and without (27%) sleep disturbance based on the PSQI. CONCLUSIONS: Results from this study indicate validity of the ISI in assessing insomnia in veterans with history of TBI and suggest a cutoff score not dissimilar from non-TBI populations. Findings from this study can help inform clinical applicability of the ISI, as well as future studies of insomnia in TBI.
OBJECTIVE/ BACKGROUND: The Insomnia Severity Index (ISI) is a widely used self-report measure of insomnia symptoms. However, to date this measure has not been validated or well-characterized in veterans who have experienced traumatic brain injury (TBI). This study assessed the psychometric properties and convergent, divergent, construct, and discriminate validity of the ISI in veterans with a history of TBI. PARTICIPANTS: Eighty-three veterans with history of TBI were seen in the VA San Diego Healthcare System as part of a research protocol. METHODS: Measures included the ISI, Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale, Neurobehavioral Symptom Inventory, Beck Depression Inventory-II, Beck Anxiety Inventory, and PTSD Checklist-Military Version. RESULTS: The ISI demonstrated moderate to strong or excellent convergent and divergent validity. A principal component analysis indicated a single construct with excellent internal consistency (Cronbach's alpha = 0.92). In exploratory analyses, the ISI discriminated well between those with (73%) and without (27%) sleep disturbance based on the PSQI. CONCLUSIONS: Results from this study indicate validity of the ISI in assessing insomnia in veterans with history of TBI and suggest a cutoff score not dissimilar from non-TBI populations. Findings from this study can help inform clinical applicability of the ISI, as well as future studies of insomnia in TBI.
Authors: Henry L Lew; Terri K Pogoda; Pei-Te Hsu; Sara Cohen; Melissa M Amick; Errol Baker; Mark Meterko; Rodney D Vanderploeg Journal: Am J Phys Med Rehabil Date: 2010-06 Impact factor: 2.159
Authors: Paul R King; Kerry T Donnelly; James P Donnelly; Mina Dunnam; Gary Warner; C J Kittleson; Charles B Bradshaw; Michelle Alt; Scott T Meier Journal: J Rehabil Res Dev Date: 2012
Authors: Karen A Sullivan; Sara L Berndt; Shannon L Edmed; Simon S Smith; Alicia C Allan Journal: Appl Neuropsychol Adult Date: 2016-05-16 Impact factor: 2.248
Authors: Joshua B Cantor; Tamara Bushnik; Keith Cicerone; Marcel P Dijkers; Wayne Gordon; Flora M Hammond; Stephanie A Kolakowsky-Hayner; Anthony Lequerica; Michael Nguyen; Lisa A Spielman Journal: J Head Trauma Rehabil Date: 2012 Nov-Dec Impact factor: 2.710
Authors: Katherine A Buckheit; Jon Nolan; Kyle Possemato; Stephen Maisto; Andrew Rosenblum; Michelle Acosta; Lisa A Marsch Journal: Transl Behav Med Date: 2022-01-18 Impact factor: 3.626
Authors: Marco Fabbri; Alessia Beracci; Monica Martoni; Debora Meneo; Lorenzo Tonetti; Vincenzo Natale Journal: Int J Environ Res Public Health Date: 2021-01-26 Impact factor: 3.390
Authors: Bahar Shahidi; Robyn W Bursch; Jennifer S Carmel; Ashleigh C Carranza; Kelsey M Cooper; Jayme V Lee; Colleen N O'Connor; Scott F Sorg; Katrina S Maluf; Dawn M Schiehser Journal: Mil Med Date: 2021-11-02 Impact factor: 1.437
Authors: Simon P Byrne; Elissa McCarthy; Jason C DeViva; Steven M Southwick; Robert H Pietrzak Journal: J Clin Sleep Med Date: 2021-06-01 Impact factor: 4.324