How do you breakdown this info to estimate the risk different of COVID-19 infections for subjects randomized to the hydroxhcloroquine compared to the placebo?

The findings of the study are detailed in the following table (just a heads up: we will learn about p-values and their interpretation later in this course!) Table 2. Outcomes of Hydroxychloroquine Therapy for Postexposure Prophylaxis against Covid-19.* Hydroxychloroquine Placebo Outcome (N =414) (N =407) P Value number (percent) Confirmed or probable Covid-19 49 (11.8) 58 (14.3) 0.35 Laboratory-confirmed diagnosis 11 (2.7) 9 ( 2 . 2 ) 0.82 Symptoms compatible with Covid-19 48 (11.6) 55 (13.5) 0.46 All new symptoms 57 (13.8) 59 (14.5 ) 0.84 Any hospitalization 1 (0.2) 1 (0.2) 0.99 Death 0 0 . Estimate the risk difference (difference in proportions) of Covid-19 (or suspected Covid-19) infection for subjects randomized to the Hydroxychloroquine arm compared to subjects randomized to the placebo arm. (Hydroxychloroquine - placebo)