Abstract
The Glasgow Outcome Scale-Extended (GOSE) structured interview captures critical components of activities and participation, including home, shopping, work, leisure, and family/friend relationships. Eighty-nine community dwelling adults with mild-moderate traumatic brain injury (TBI) were recruited (average = 2.7 year post injury). Nine items of the 19 items were used for the psychometrics analysis purpose. Factor analysis and item-level psychometrics were investigated using the Rasch partial-credit model. Although the principal components analysis of residuals suggests that a single measurement factor dominates the measure, the instrument did not meet the factor analysis criteria. Five items met the rating scale criteria. Eight items fit the Rasch model. The instrument demonstrated low person reliability (0.63), low person strata (2.07), and a slight ceiling effect. The GOSE demonstrated limitations in precisely measuring activities/participation for individuals after TBI. Future studies should examine the impact of the low precision of the GOSE on effect size.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 65-73 |
| Number of pages | 9 |
| Journal | OTJR Occupation, Participation and Health |
| Volume | 36 |
| Issue number | 2 |
| DOIs | |
| State | Published - 2016 |
| Externally published | Yes |
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Keywords
- Measurement
- Participation
- Psychometrics
- Rasch analysis
ASJC Scopus subject areas
- Occupational Therapy
Cite this
Item-level psychometrics of the Glasgow Outcome Scale : Extended structured interviews. / Hong, Ickpyo; Li, Chih-ying; Velozo, Craig A.
In: OTJR Occupation, Participation and Health, Vol. 36, No. 2, 2016, p. 65-73.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Item-level psychometrics of the Glasgow Outcome Scale
T2 - Extended structured interviews
AU - Hong, Ickpyo
AU - Li, Chih-ying
AU - Velozo, Craig A.
PY - 2016
Y1 - 2016
N2 - The Glasgow Outcome Scale-Extended (GOSE) structured interview captures critical components of activities and participation, including home, shopping, work, leisure, and family/friend relationships. Eighty-nine community dwelling adults with mild-moderate traumatic brain injury (TBI) were recruited (average = 2.7 year post injury). Nine items of the 19 items were used for the psychometrics analysis purpose. Factor analysis and item-level psychometrics were investigated using the Rasch partial-credit model. Although the principal components analysis of residuals suggests that a single measurement factor dominates the measure, the instrument did not meet the factor analysis criteria. Five items met the rating scale criteria. Eight items fit the Rasch model. The instrument demonstrated low person reliability (0.63), low person strata (2.07), and a slight ceiling effect. The GOSE demonstrated limitations in precisely measuring activities/participation for individuals after TBI. Future studies should examine the impact of the low precision of the GOSE on effect size.
AB - The Glasgow Outcome Scale-Extended (GOSE) structured interview captures critical components of activities and participation, including home, shopping, work, leisure, and family/friend relationships. Eighty-nine community dwelling adults with mild-moderate traumatic brain injury (TBI) were recruited (average = 2.7 year post injury). Nine items of the 19 items were used for the psychometrics analysis purpose. Factor analysis and item-level psychometrics were investigated using the Rasch partial-credit model. Although the principal components analysis of residuals suggests that a single measurement factor dominates the measure, the instrument did not meet the factor analysis criteria. Five items met the rating scale criteria. Eight items fit the Rasch model. The instrument demonstrated low person reliability (0.63), low person strata (2.07), and a slight ceiling effect. The GOSE demonstrated limitations in precisely measuring activities/participation for individuals after TBI. Future studies should examine the impact of the low precision of the GOSE on effect size.
KW - Measurement
KW - Participation
KW - Psychometrics
KW - Rasch analysis
UR - http://www.scopus.com/inward/record.url?scp=84978872712&partnerID=8YFLogxK
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U2 - 10.1177/1539449216632449
DO - 10.1177/1539449216632449
M3 - Article
VL - 36
SP - 65
EP - 73
JO - OTJR Occupation, Participation and Health
JF - OTJR Occupation, Participation and Health
SN - 1539-4492
IS - 2
ER -