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. 2021 Nov 2;4(11):e2132540. doi: 10.1001/jamanetworkopen.2021.32540

Figure 2. Kaplan-Meier Analyses of Cumulative Incidence Proportion of SARS-CoV-2 Infections Between Vaccinated and Unvaccinated Individuals.

Figure 2.

A, SARS-CoV-2 infection at any time after vaccination. Cumulative incidence proportion at time t is the estimated proportion of patients who experience the outcome on or before time t (ie, 1 minus the standard Kaplan-Meier survival estimate with onset on any day after the date of vaccination): 60 of 8889 vaccinated and 2236 of 88 898 unvaccinated (log-rank P = .001). B, SARS-CoV-2 infection within 14 days after infection. Cumulative incidence proportion: 18 vaccinated and 473 unvaccinated (log-rank P = 6.93 × 10-4). PCR indicates polymerase chain reaction.