5/5
Positive
Late treatment study
et al., Preprints 2020, 2020050057, doi:10.20944/preprints202005.0057.v1 (Preprint)
Early Hydroxych loroquine Is Associated with an Increase of Survival in COVID-19 Patients: An Observational Study
166 patients hospitalised with COVID-19, HC Q increased survival 1.4 - 1.8 times when patients admitted in early stages. Early is relative to hospital admission here - all patients relatively serious condition.