Table 2.
Mean ± standard deviation of performance on measures of speech production in PNFA patients (N=16) and controls (N=10)1
| PNFA | Controls | |
|---|---|---|
| Speech Output | ||
| Time (sec) | 486 ± 290 | 255 ± 76 |
| Words | 346 ± 218 | 586 ± 110 |
| Words per minute | 45 ± 18 | 143 ± 24 |
| Mean length of utterance (words) | 7.4 ± 2.1 | 10.3 ± 1.8 |
| Editing breaks and hesitation markers (per 100 words) | 12.8 ± 8.2 | 2.0 ± 2.0 |
| Content, structure, grammar | ||
| Open class words per utterance | 2.84 ± .80 | 4.54 ± .71 |
| Nouns per utterance | 1.48 ± .54 | 2.08 ± .41 |
| Total verbs per utterance | 1.12 ± .35 | 1.70 ± .22 |
| Complex structures per utterance | .14 ± .10 | .36 ± .11 |
| Proportion of well-formed utterances | .62 ± .25 | .94 ± .04 |
1
Note: All between-group comparisons are significant at p<.01 except Time, which is significant at p<.05.