Figure 3.
Primary and secondary outcomes, overall and by baseline antibody status
Subgroup-specific RR estimates are represented by squares (with areas of the squares proportional to the amount of statistical information) and the lines through them correspond to the 95% CIs. Open squares represent participants with unknown status, solid squares represent participants with known status. The tests for heterogeneity (ie, χ21) compare the log RRs in the seronegative versus seropositive subgroups (ie, excluding those with unknown antibody status). Excluded participantsare included in the overall summary diamonds. RR=risk ratio for the composite outcome of invasive mechanical ventilation or death, and rate ratio for the other outcomes.