Background Hydroxychloroquine combined with azithromycin (HCQ/AZI) has initially been used against coronavirus disease-2019 (COVID-19). In this retrospective study, we assessed the clinical effects of HCQ/AZI, with a 28-days follow-up. Methods In a registry-study which included patients hospitalized for COVID-19 between March 15 and April 2, 2020, we compared patients who received HCQ/AZI to those who did not, regarding a composite outcome of mortality and mechanical ventilation with a 28-days follow-up. QT was monitored for patients treated with HCQ/AZI. Were excluded patients in intensive care units, palliative care and ventilated within 24 hours of admission. Three analyses were performed to adjust for selection bias: propensity score matching, multivariable survival, and inverse probability score weighting (IPSW) analyses. Results Overall, 203 patients were included: 60 patients treated by HCQ/AZI and 143 control patients. During the 28-days follow-up, 32 (16.3%) patients presented the primary outcome and 23 (12.3%) patients died. Propensity-score matching identified 52 unique pairs of patients with similar characteristics. In the matched cohort (n = 104), HCQ/AZI was not associated with the primary composite outcome (log-rank p-value = 0.16). In the overall cohort (n = 203), survival and IPSW analyses also found no benefit from HCQ/AZI. In the HCQ/AZI group, 11 (18.3%) patients prolonged QT interval duration, requiring treatment cessation. Conclusions HCQ/AZI combination therapy was not associated with lower in-hospital mortality and mechanical ventilation rate, with a 28-days follow-up. In the HCQ/AZI group, 18.3% of patients presented a prolonged QT interval requiring treatment cessation, however, control group was not monitored for this adverse event, making comparison impossible.
【초록키워드】 COVID-19, Treatment, coronavirus, Mortality, mechanical ventilation, combination therapy, outcome, Clinical effect, Probability, Retrospective study, Palliative care, Cohort, intensive care units, survival, Characteristics, adverse event, Patient, Follow-up, Admission, in-hospital mortality, Analysis, propensity score matching, Ventilated, Primary outcome, control group, control patients, Weighting, benefit, prolonged QT interval, multivariable, Result, performed, unique, excluded, analyses, 24 hour, adjust, patients died, patients hospitalized, patients treated, 【제목키워드】 COVID-19, Efficacy, Hydroxychloroquine, Retrospective study, patients hospitalized,