Fig. 4: Sensitivity analysis based on bootstraps estimating the cumulative incidence rate ratio of excretion of SARS-CoV-2 in saliva sample of fully vaccinated workers from nursing homes with COVID-19 mRNA BNT162b2 vaccine.
From: A 2-month field cohort study of SARS-CoV-2 in saliva of BNT162b2 vaccinated nursing home workers

cIRR, cumulative incidence rate ratio; LL and UL are the lower and the upper limits of the 95% confidence interval (exact binomial approximation).