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EuropePMC; 2022.
Preprint in English | EuropePMC | ID: ppcovidwho-329766

ABSTRACT

Background: From December 16th 2021, antivirals and neutralising monoclonal antibodies (nMABs) were available to treat high-risk non-hospitalised patients with COVID-19 in England. Aims To develop a framework for detailed near real-time monitoring of treatment deployment, to ascertain eligibility status for patients and to describe trends and variation in coverage of treatment between geographic, clinical and demographic groups. Methods With the approval of NHS England we conducted a retrospective cohort study using routine clinical data from 23.4m people in the OpenSAFELY-TPP database, approximately 40% of England's population. We implemented national eligibility criteria and generated descriptive statistics with detailed clinical, demographic and geographic breakdowns for patients receiving an antiviral or nMAB. Results We identified 50,730 non-hospitalised patients with COVID-19 between 11th December 2021 and 23rd February 2022 who were potentially eligible for antiviral and/or nMAB treatment. 6420 (15%) received treatment (sotrovimab 3600 (56%);molnupiravir 2680 (42%);nirmatrelvir/ritonavir (Paxlovid) 80 (1%);casirivimab 50 (1%);and remdesivir <5). The proportion treated varied by risk group, with the lowest proportion treated in those with liver disease (10%;95% CI 9-11). Treatment type also varied, with molnupiravir favoured over sotrovimab in only two high risk cohorts: Down syndrome (67%;95% CI 59-74) and HIV/AIDS (63%;95% CI 56-70). The proportion treated varied by ethnicity, from White (14%;95% CI 13-14) or Asian (13%;95% CI 12-14) to Black (9%;95% CI 8-11);by NHS Regions (from 6% (95% CI 5-6) in Yorkshire and the Humber to 17% (95% CI 16-18) in the East of England);and by rurality from 16% (95% CI 14-17) in "Rural - village and dispersed" to 10% (95% CI 10-11) in "Urban - conurbation". There was also lower coverage among care home residents (4%;95% CI 3-4), those with dementia (4%;95% CI 3-5), those with sickle cell disease (7%;95% CI 5-8), and in the most socioeconomically deprived areas (9%;95% CI 8-9, vs least deprived: 15%;95% CI 15-16). Patients who were housebound, or who had a severe mental illness had a slightly reduced chance of being treated (10%;95% CI 8-11 and 10%;95% CI 8-12, respectively). Unvaccinated patients were substantially less likely to receive treatment (5%;95% CI 4-6). Conclusions Using the OpenSAFELY platform we have developed and delivered a rapid, near real-time data-monitoring framework for the roll-out of antivirals and nMABs in England that can deliver detailed coverage reports in fine-grained clinical and demographic risk groups, using publicly auditable methods, using linked but pseudonymised patient-level NHS data in a highly secure Trusted Research Environment. Targeted activity may be needed to address apparent lower treatment coverage observed among certain groups, in particular (at present): different NHS regions, socioeconomically deprived areas, and care homes.

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