Observational study 1,064 hospitalized patients in the Netherlands, 53% reduced risk of transfer to the ICU for mechanical ventilation with HCQ treatment starting on the first day of admission.
Weighted propensity score adjusted hazard ratio for transfer to the ICU with HCQ treatment, HR = 0.47, p
= 0.008. For CQ, HR = 0.8, p
= 0.207. Mortality results in this study are only for mortality before transfer to the ICU. The combined ICU/death HR was 0.68, p
= 0.024 for HCQ, and 0.85, p
= 0.224 for CQ.
Observational, multicenter, cohort study of hospitalized COVID-19 patients. 189 HCQ patients, 377 CQ, 498 control.
Lammers et al., 29 Sep 2020, prospective, Netherlands, peer-reviewed, 18 authors.