TABLE 1.

Characteristics of the culture-positive population

VisitNo. of subjectsAge (yr)Interval between cough start and indicated visit (days [mean ± SD])
Mean ± SDRange
Initial5111.5 ± 3.05-1760 ± 30
Second2513.3 ± 2.57-18409 ± 108
Third315.7 ± 1.215-17867 ± 34