Concurrent validity:
Traumatic brain injury: (Novack et al, 2000)
- Excellent correlation between GOAT and O-Log scores (r=.90) and estimation of PTA duration (r=.99) using a cut-off score of >75 for the GOAT and 25 or better for O-Log
Traumatic brain injury: (Kean et al, 2011; n=90 inpatients with TBI; mean age=48.25(18.87) years; mean time since injury=23.79 (14.1) days); 257 ratings total)
- Excellent correlations for raw scores (r=.901) and estimates of duration of PTA (r=.99) for O LOG and GOAT
Predictive validity:
Traumatic brain injury: (Novack et al, 2000)
- Adequate predictive validity of minimum O-Log score with rehabilitation discharge FIM score (r=.575)
Traumatic Brain Injury: (Alderson et al, 2002; n=229 from pool of 389; primarily moderate to severe TBI who were disoriented at inpatient rehabilitation admission, mean age 41.3 (18.6) years)
- Initial O-log, time since injury and number of O-log assessments predicted resolution of disorientations for 76.4% of sample
Traumatic Brain Injury: (Dowler et al, 2000; n=60 individuals with moderate to severe TBI; mean age 31.3(13.6)years; mean time since injury=6 months (SD=4 weeks))
- Poor to adequate but significant correlation between minimum rehabilitation O-Log score and Community Integration Questionnaire score (r=.395) and Disability Rating Scale scores (r=-.295) at 12 months post-injury.
- Poor to adequate but significant correlations between minimum O-Log scores in rehabilitation and neuropsychological tests (r=-.295-.395).
Traumatic Brain Injury: (Frey et al, 2007; n=83 inpatients with TBI; mean age 47.4 (20.4) years)
- PTA determined by O-Log demonstrated better prediction of rehabilitation outcomes than GOAT
|
O-LOG (r^2)
|
GOAT (r^2)
|
Total LOS
|
0.04
|
0.03
|
D/C total FIM
|
0.08
|
0.06
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D/C motor FIM
|
0.04
|
0.03
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D/C cogntive FIM
|
0.18
|
0.13
|