Absence of Evidence or Evidence of Absence.....pdf (507.61 kB)

Absence of evidence or evidence of absence - a review of the evidence for hydroxychloroquine as a potential candidate for prophylaxis against COVID-19

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posted on 09.09.2021, 14:42 by Cara Usher, Lea Trela-Larsen, Emer Fogarty, Aisling O'LearyAisling O'Leary, Stephen Capper, Ellen P O'Sullivan, Caitriona NiChoitir, Cathal Walsh, Michael Barry, Roisín Adams
Clinical trials are investigating several agents as potential options for pre-exposure prophylaxis and post-exposure prophylaxis to prevent infection with COVID-19. A particular focus has been high risk groups including healthcare workers. Chloroquine (CQ) and hydroxychloroquine (HCQ) are the predominant agents in terms of numbers of clinical trials listed on Clinicaltrials.gov. However, CQ/HCQ have not been proven as an effective treatment option for COVID-19, and it is currently unclear what benefit, if any, is available to support their use in a prophylactic role. Four randomised control trials have been published so far which have examined the effect of HCQ as pre-exposure (PrEP) and post-exposure prophylaxis (PEP). This study summarises the evidence to date for HCQ as a potential prophylactic option for PEP and PrEP, presents both the aggregated and disaggregated data and details the gaps in the evidence base. The absolute risk differences for the pre-exposure prophylaxis studies were -0.3% to -2% and for the post prophylaxis studies were -0.6% and -2.4%. There were more adverse events noted in the hydroxychloroquine arms across all four studies

History

Comments

The original article is available at https://scholars.direct/

Published Citation

Usher C, et al,. Absence of evidence or evidence of absence - a review of the evidence for hydroxychloroquine as a potential candidate for prophylaxis against COVID-19. Ann Public Health Reports 2021;5(1):160-165.

Publication Date

4 February 2021

Department/Unit

  • School of Pharmacy and Biomolecular Sciences

Research Area

  • Chemistry and Pharmaceutical Sciences
  • Population Health and Health Services
  • Immunity, Infection and Inflammation

Publisher

Scholars Direct

Version

  • Published Version (Version of Record)