Table 2.

Mean group performance at each time point. Mean (standard deviation) for number and percent correct information units (CIUs) produced pre-therapy (weeks −6,0) and post-therapy (weeks 6,12). Percent of correct information units are calculated by dividing the number of correct information units by the number of total words produced, and thus reflect the ratio of successful communication to total communication attempts.

CIUs	Week −6	Week 0	Week 6	Week 12
Number	72.33 (87.41)	67.21 (83.02)	105.94 (116.25)	96.88 (127.45)
Percent	31.27 (24.75)	30.52 (24.52)	35.64 (26.53)	32.43 (23.76)