Figure 2.

Impact of immediate treatment with amoxicillin-clavulanate on carriage of Streptococcus pneumoniae with varying susceptibility to penicillin. Tables and plots indicate the proportion of carrying S. pneumoniae, penicillin-susceptible S. pneumoniae (PSSP), and penicillin-nonsusceptible S. pneumoniae (PNSP), measured among all swab specimens with microbiological determinations available (carriage presence/absence, or carriage presence/absence and penicillin susceptibility, given carriage). Prevalence estimates are presented as medians (95% confidence intervals [CIs]), based on the bootstrap approach (Methods and Supplementary Materials), to correct for bias from incomplete testing of specimens. Consequently, median estimates may not equal proportions. Amox-Clav, amoxicillin-clavulanate; RR, risk ratio.