Risk factors associated with COVID-19 severity among patients on maintenance haemodialysis: a retrospective multicentre cross-sectional study in the UK.

Objectives: To assess the applicability of risk factors for severe COVID-19 defined in the general population for patients on haemodialysis.

Setting: A retrospective cross-sectional study performed across thirty four haemodialysis units in midlands of the UK.

Participants: All 274 patients on maintenance haemodialysis who tested positive for SARS-CoV-2 on PCR testing between March and August 2020, in participating haemodialysis centres.