There were 821 subjects enrolled in this study.Of the 414 randomized to the treatment (Hydroxychloroquine) arm, 49 (11.8%) developed Covid (or probable Covid) within 14 days of randomization. Of the 407 randomized to the placebo arm, 58 (14.3%) developed Covid (or probable Covid) within 14 days of randomization.

Estimate, and report,a 95% confidence interval for the relative risk from item 27.

The relative risk is 0.83