et al., Annals of the Rheumatic Diseases, doi:10.1136/annrheumdis-2020-218244 (Letter)
Small study of 152 SLE patients taking HCQ with a phone survey for COVID-19 suggestive symptoms. There was 2 hospitalizations (group not identified) and no ICU or death cases. A similar percentage of suspected infections were reported for HCQ users and non-HCQ users, RR 0.96, p
There was no mortality and severity was not analyzed to determine if HCQ treated patients fared better. No adjustment for concomitant medications or severity of SLE. Only 5 cases were PCR confirmed.
Gendebien et al., 6/25/2020, retrospective, Belgium, Europe, preprint, survey, 9 authors.
risk of COVID-19 case, 3.9% lower, RR 0.96, p = 0.93, treatment 12 of 152 (7.9%), control 6 of 73 (8.2%).
Effect extraction follows pre-specified rules
prioritizing more serious outcomes. For an individual study the most serious
outcome may have a smaller number of events and lower statistical signficance,
however this provides the strongest evidence for the most serious outcomes
when combining the results of many trials.