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. 2023 Mar 1;10(4):ofad111. doi: 10.1093/ofid/ofad111

Figure 2.

Figure 2.

Incidence rate (IR) and attack rate (AR) for confirmed respiratory syncytial virus-acute respiratory infection episode (cRSV-ARI) in the community-dwelling (CD) (A) and long-term care facility (LTCF) (B) cohorts during season 1, overall, by RSV type and by age group at enrollment (analysis set). Note: Error bars represent 95% confidence intervals (CIs). For IRs, Wald 95% CIs accounting for clustered data were calculated using Poisson regression with Rao-Scott transformation; when the design effect was either ≤1 or could not be estimated, the exact Poisson 95% CIs were calculated instead. For ARs, extended Clopper-Pearson exact 95% CIs accounting for clustered data were calculated; when the adjusted effective sample size was greater than the actual sample size or the design effect could not be estimated, Clopper-Pearson exact 95% CIs not extended for clustered data were calculated instead. LL, lower limit; N, number of participants in the analysis set; n, number of participants with cRSV-ARI; UL, upper limit.