TY  - JOUR
PY  - 2019//
TI  - Psychometric characteristics of the Insomnia Severity Index in veterans with history of traumatic brain injury
JO  - Behavioral sleep medicine
A1  - Kaufmann, Christopher N.
A1  - Orff, Henry J.
A1  - Moore, Raeanne C.
A1  - Delano-Wood, Lisa
A1  - Depp, Colin A.
A1  - Schiehser, Dawn M.
SP  - 12
EP  - 18
VL  - 17
IS  - 1
N2  - 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. <br><br>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. <br><br>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. <br><br>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. <br><br>FINDINGS from this study can help inform clinical applicability of the ISI, as well as future studies of insomnia in TBI.<p />  <p>Language: en</p>
LA  - en
SN  - 1540-2002
UR  - http://dx.doi.org/10.1080/15402002.2016.1266490
ID  - ref1
ER  -