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Cross tabulation of stuttering at age 7 and stuttering at each measured age group.
| Stuttering at age 7 | |||
|---|---|---|---|
| No | Yes | ||
| Stuttering at age 2 | No | 7164 | 93 |
| Yes | 82 | 1 | |
| Stuttering at age 3 | No | 7616 | 68 |
| Yes | 180 | 33 | |
| Stuttering at age 4 | No | 10514 | 64 |
| Yes | 262 | 87 | |
Note. Numbers do not add up to the numbers in the prevalence section because of different combinations of missing cases.
