Background: Preliminary studies suggest that people from Black, Asian and Minority Ethnic (BAME) backgrounds experience higher mortality from COVID-19 but the underlying reasons remain unclear. Methods: Prospective analysis of registry data describing patients admitted to five acute NHS Hospitals in east London, UK for COVID-19. Emergency hospital admissions with confirmed SARS-CoV-2 aged 16 years or over were included. Data, including ethnicity, social deprivation, frailty, patient care and detailed risk factors for mortality, were extracted from hospital electronic records. Multivariable survival analysis was used to assess associations between ethnic group and mortality accounting for the effects of age, sex and various other risk factors. Results are presented as hazard ratios (HR) or odds ratios (OR) with 95% confidence intervals. Findings: 1996 adult patients were admitted between 1st March and 13th May 2020. After excluding 259 patients with missing ethnicity data, 1737 were included in our analysis of whom 511 had died by day 30 (29%). 538 (31%) were from Asian, 340 (20%) Black and 707 (40%) white backgrounds. Compared to white patients, those from BAME backgrounds were younger, with differing co-morbidity profiles and less frailty. Asian and black patients were more likely to be admitted to intensive care and to receive invasive ventilation (OR 1.54, [1.06-2.23]; p=0.023 and 1.80 [1.20-2.71]; p=0.005, respectively). After adjustment for age and sex, patients from Asian (HR 1.49 [1.19-1.86]; p<0.001) and black (HR 1.30 [1.02-1.65]; p=0.036) backgrounds were more likely to die. These findings persisted across a range of risk-factor adjusted analyses. Interpretation: Patients from Asian and Black backgrounds are more likely to die from COVID-19 infection despite controlling for all previously identified confounders. Higher rates of invasive ventilation in intensive care indicate greater acute disease severity. Our analyses suggest that patients of Asian and Black backgrounds suffered disproportionate rates of premature death from COVID-19.
Ethnicity and outcomes in patients hospitalised with COVID-19 infection in East London: an observational cohort study