| Mean | Standard deviation | |
|---|---|---|
| Age (n=9) | 18 | 2.3 |
| GORT-4 comprehension | 10.6 (63 percentile) | 1.7 |
| GORT-4 fluency | 13.2 (84 percentile) | 3.0 |
| Scan interval | 6 mo. | 2 mo. |
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