Measurement properties of the Galveston Orientation and Amnesia Test (GOAT) and improvement patterns during inpatient rehabilitation.
OBJECTIVE
To determine the measurement properties of the Galveston Orientation and Amnesia Test (GOAT) using the Rasch model and rating scale analysis (RSA).


METHODS
Calibration of data collected weekly during rehabilitation.


METHODS
Six inpatient rehabilitation facilities.


METHODS
77 patients admitted for their first rehabilitation after traumatic brain injury.


RESULTS
Rescoring the items as dichotomies, three strata of posttraumatic amnesia (PTA) were identified. All items cohered to define a single construct and the item hierarchy confirmed their hypothesized ordering.


CONCLUSIONS
Equal-interval measures of PTA were developed that exhibited good reliability and validity. A self-scoring key was developed to more efficiently assess PTA.
Bode
R K
RK
Rehabilitation Services Evaluation Unit, Rehabilitation Institute of Chicago, Northwestern University Medical School, Chicago, Illinois 60611, USA.
Heinemann
A W
AW
Semik
P
P
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000647:Amnesia / Q000175:diagnosis; D001930:Brain Injuries / Q000150:complications / Q000175:diagnosis* / Q000523:psychology / Q000534:rehabilitation*; D010054:Brief Psychiatric Rating Scale / Q000592:standards*; D003072:Cognition Disorders / Q000175:diagnosis* / Q000209:etiology; D003625:Data Collection; D005260:Female; D006801:Humans; D015601:Injury Severity Score; D007297:Inpatients; D008297:Male; D008875:Middle Aged; D009460:Neurologic Examination; D012047:Rehabilitation Centers; D015203:Reproducibility of Results; D012494:Sampling Studies; D012680:Sensitivity and Specificity