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Coefficients of determination (R 2) between different aphasia severity measures and the WAB AQ.
| Measure | WAB AQ (R 2) | N | Source |
|---|---|---|---|
| WAB AQ (retest) | .95 | 39 | Current data |
| Rasch WAB | .90 | 101 | Hula et al. (2010) |
| QAB | .88 | 16 | Wilson et al. (2018) |
| SCANT | .83 | 360 | Current data |
| BNT-15 | .65 | 258 | Richardson et al. (2018) |
Note. WAB = Western Aphasia Battery; AQ = Aphasia Quotient; QAB = Quick Aphasia Battery; SCANT = Severity-Calibrated Aphasia Naming Test; BNT-15 = 15-item Boston Naming Test.
