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HCQ study #139 of 230
9/23 Late treatment study
Ulrich et al., Open Forum Infectious Diseases, doi:10.1093/ofid/ofaa446 (Peer Reviewed)
Treating Covid-19 With Hydroxychloroquine (TEACH): A Multicenter, Double-Blind, Randomized Controlled Trial in Hospitalized Patients
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Small RCT on very late stage use of HCQ, with 48% on oxygen at baseline. 67 HCQ patients, 61 control.
Baseline states were not comparable - 82% more HCQ patients had the highest severity at baseline, there was 32% more male HCQ patients, and 44% more control patients used AZ. The HCQ group also had significantly more patients with cerebrovascular disease, cardiovascular disease (non-hypertension), renal disease (non-dialysis), and a history of organ transplants.
30 day mortality RR 1.06, p = 1.0.

Ulrich et al., 9/23/2020, Randomized Controlled Trial, USA, North America, peer-reviewed, baseline oxygen requirements 63.3%, mean age 66.2, 18 authors.
risk of death, 6.0% higher, RR 1.06, p = 1.00, treatment 7 of 67 (10.4%), control 6 of 61 (9.8%).
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