Table 2.
Prevalence and incidence of recurrent dry night cough (RNC) at age one, two, and three
| Age 1 | Age 2 | Age 3 | |
|---|---|---|---|
| Prevalence | 21.6%(119/550) | 17.3%(95/550) | 21.1%(116/550) |
| Incidence | 21.6%(119/550) | 13.5%(58/431) | 10.2%(38/373) |
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