Statistics
CLI, PCR-confirmed SARS-CoV-2 infection
REGRESSION
The analyses presented in this manuscript are restricted to baseline-seronegative participants with PCR-confirmed SARS-CoV-2 infection ≥15 days after dose 2 of AZD1222 or placebo per the protocol definition of breakthrough infection (SAS 9.4 procedure SGPANEL was used to create the scatter plots for the correlative analyses. The REG statement generated the fitted regression line along with confidence limit intervals (CLI) and confidence limit for the mean (CLM) options to create the prediction limits and confidence limits respectively.Informal comparisons between groups were done by 