Nuffield Trust 7 June 2021
- This report looks at the quality and consistency of ethnicity coding within health datasets. The analysis of the quality of ethnicity coding in hospital datasets found data quality problems including:
- incomplete coding and inconsistent use of codes
- an excessive and growing proportion of patients have ethnicity recorded as “not known”, “not stated” or “other” which impedes reliable analyses of ethnic differences, and
- systematic biases in data quality - for example, data quality is worse in London, in adults of working age, and for patients with short hospital stays.
- The report calls on NHS England to provide new guidance for health service providers and GPs.