mean age 53·8 years, 46·3% women
The study included patients hospitalised between Dec 20, 2019, and April 14, 2020, with a positive laboratory finding for SARS-CoV-2. Patients who received one of the treatments of interest within 48 h of diagnosis were included in one of four treatment groups (chloroquine alone, chloroquine with a macrolide, hydroxychloroquine alone, or hydroxychloroquine with a
macrolide), and patients who received none of these treatments formed the control group. Patients for whom one of
the treatments of interest was initiated more than 48 h after diagnosis or while they were on mechanical ventilation,
as well as patients who received remdesivir, were excluded.