Table 1. General characteristics of patients and pneumococcal acute otitis media (AOM) episodes.

No. patients (% males)	708 (55.9)
No. episodes	818
Age of patients in months at the time of the first AOM episode [median (interquartile range)]	12 (10–24)
No. (%) episodes with Streptococcus pneumoniae alone	556 (68.0)
No. (%) episodes with mixed infections	262 (32.0)
No. (%) patients with only 1 AOM episode	622 (87.8)
No. patients with reinfections	86
No. patients with 1 episode of reinfection	68
No. patients with 2 episodes of reinfection	13
No. patients with 3 episodes of reinfection	4
No. patients with 5 episodes of reinfection	1
No. patients with relapses 1	21
No. patients relapsing with an interval of 7–20 days	14
No. patients relapsing with an interval of 21–30 days	6
No. patients relapsing with an interval of 31–89 days	1

¹Relapses were not included as distinct episodes.