Although the convergent validity of ImPACT was supported , evidence of discriminant and predictive validity , diagnostic accuracy and responsiveness was inconclusive .
The review found many factors influenced the validity and utility of ImPACT scores .
Background The immediate post concussion assessment and cognitive testing ( ImPACT ) is the most widely used concussion assessment tool .
Despite its popularity , it is unclear if validation studies for the ImPACT test covered all aspects of validity to support its widespread use in research and clinical practice .
Objective The purpose of this report is to review literature surrounding the validity and the utility of the ImPACT test .
Identification and Validation of Prognostic Criteria for Persistence of Mild Traumatic Brain Injury–Related Impairment in the Pediatric Patient
Objectives This study aim ed to develop and vali date prognostic criteria to identify children at risk for persistence of mild traumatic brain injury ( MTBI ) impairment . Methods A prospect i ve cohort study was conducted among 11- to 17-year-old emergency department ( ED ) patients admitted for MTBI . The Immediate Postconcussion Assessment and Cognitive Testing neurocognitive test was administered during hospitalization and at routine clinic follow-up ( ImPACT © ) . Logistic regression and receiver operating characteristic ( ROC ) analyses were used to develop prognostic criteria for MTBI-related impairment in 1 group and vali date the criteria in a second group . Mild traumatic brain injury – related impairment was defined as any impairment ( symptom score > 8 or < 25th percentile on at least 1 of 4 neurocognitive composite domains ) or severe impairment ( symptom score > 12 or < 25th percentile on at least 2 of 4 neurocognitive composite domains ) present on follow-up . Results The derivation and validation cohorts were 42 and 21 patients ( median age , 14 years ; 71.4 % male ) . Using the mean of the validation cohort patients ’ 4 neurocognitive deficit composite percentiles at baseline , a cut point of less than 39 percentile had high sensitivity ( 0.89 ) and specificity ( 0.80 ) and an area under the ROC curve of 0.85 in predicting the presence of any impairment at follow-up ; it discriminated equally well in the validation cohort . A cut point of less than 27 percentile had good sensitivity ( 0.67 ) and specificity ( 0.67 ) and area under the ROC curve of 0.67 in predicting the presence of severe impairment in the derivation cohort at follow-up ; it discriminated equally well in the validation cohort . Conclusions This is the first study demonstrating prognostic criteria that may greatly help physicians identify patients who would benefit from structured follow-up care after MTBI
Although the convergent validity of ImPACT was supported , evidence of discriminant and predictive validity , diagnostic accuracy and responsiveness was inconclusive .
The review found many factors influenced the validity and utility of ImPACT scores .
Background The immediate post concussion assessment and cognitive testing ( ImPACT ) is the most widely used concussion assessment tool .
Despite its popularity , it is unclear if validation studies for the ImPACT test covered all aspects of validity to support its widespread use in research and clinical practice .
Objective The purpose of this report is to review literature surrounding the validity and the utility of the ImPACT test .