COVID-19 in Individuals Treated With Long-Term Hydroxychloroquine: A Propensity Score-Matched Analysis of Cicatricial Alopecia Patients
et al., Journal of Drugs in Dermatology,
PSM retrospective 144 alopecia patients in the USA, showing lower risk of COVID-19 with HCQ prophylaxis. The supplemental appendix is not available.
risk of case, 13.0% lower, OR 0.87, p = 0.006, treatment 45, control 99, adjusted per study, propensity score matching, multivariable, RR approximated with OR.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Shaw et al., 1 Jul 2021, retrospective, USA, peer-reviewed, 10 authors, study period 1 March, 2020 - 15 May, 2020.