TY  - JOUR
PY  - 2019//
TI  - Psychometric properties of the Satisfaction With Life Scale in people with traumatic brain, spinal cord, or burn injury: a National Institute on Disability, Independent Living, and Rehabilitation Research Model System study
JO  - Assessment
A1  - Amtmann, Dagmar
A1  - Bocell, Fraser D.
A1  - Bamer, Alyssa
A1  - Heinemann, Allen W.
A1  - Hoffman, Jeanne M.
A1  - Juengst, Shannon B.
A1  - Rosenberg, Marta
A1  - Schneider, Jeffery C.
A1  - Wiechman, Shelley
A1  - McMullen, Kara
SP  - 695
EP  - 705
VL  - 26
IS  - 4
N2  - This study evaluated the measurement properties of the Satisfaction With Life Scale (SWLS) in a sample of 17,897 people with spinal cord injury (48%, n = 8,566), traumatic brain injury (44%, n = 7,941), and burn injury (8%, n = 1,390), 1 year following injury. We examined measurement invariance across the groups, unidimensionality, local independence, reliability from a classical test and item response theory (IRT) framework, and fit to a unidimensional IRT model. The results support unidimensionality and local independence of the SWLS. Reliability was adequate from a classical test and IRT perspective. IRT analysis found that the SWLS could be improved by using only five response categories rather than seven and by removing the fifth item, "If I could live my life over, I would change almost nothing." This item functions poorly and reduces instrument reliability. With these revisions, the SWLS is a useful instrument to monitor an important outcome of trauma rehabilitation.<p />  <p>Language: en</p>
LA  - en
SN  - 1073-1911
UR  - http://dx.doi.org/10.1177/1073191117693921
ID  - ref1
ER  -