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. 2020 Nov 22:zwaa118. doi: 10.1093/eurjpc/zwaa118

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Published on behalf of the European Society of Cardiology. All rights reserved. © The Author(s) 2020. For permissions, please email: journals.permissions@oup.com.

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

This article is published and distributed under the terms of the Oxford University Press, Standard Journals Publication Model (https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model)

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Association between [hydroxy]chloroquine use dose categories and the mean QTc-interval duration. Low dosage: ≤0.3 DDD. High dosage: >0.3 DDD. Hydroxychloroquine DDD = 520 mg. Chloroquine DDD = 500 mg. ECG, electrocardiogram measurements; LCI, lower confidence interval; UCL, upper confidence interval. Adjusted for age, sex, body mass index, hypertension, type 2 diabetes, myocardial infarction, heart failure, smoking behaviour, and lipid-lowering drugs.