Bedside screening for aphasia: a comparison of two methods.

A prospective study was carried out in 50 consecutive patients referred with suspected aphasia in order to compare the Frenchay Aphasia Screening Test (FAST) with the Sheffield Screening Test for Acquired Language Disorders (SST). The study included 32 men and 18 women with a mean (SEM) age 53.9 (2) years. The comprehension scores on the FAST were correlated with receptive skills on the SST r = 0.74 (P < 0.001). For expression, the correlation coefficient was r = 0.92 (P < 0.001) and the total scores of the two tests correlated closely r = 0.89 (P < 0.001). There was a positive correlation between total score on the FAST and the Short Orientation, Memory and Concentration test (SOMC) r = 0.86 (P < 0.001), and the total scores on the SST and SOMC r = 0.91 (P < 0.001). The Barthel index also correlated positively with the FAST r = 0.59 (P < 0.001) and SST r = 0.63 (P < 0.001). The study demonstrated that the two tests are simple, short and similar in their predictive value for the screening and diagnosis of aphasia. The SST was found to have additional advantages, as it does not require any special equipment or stimulus cards, and it was not affected by visual neglect.