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Black Patients Underdiagnosed With Long COVID In The US Compared With White Patients
Zachary Butzin-Dozier1, Yunwen Ji2, Sarang Deshpande3
1Zachary Butzin-Dozier (zdozier@stanford.edu), Stanford University, Stanford, California.
Health Affairs (Project Hope)
|July 7, 2026
Summary
Black patients were less likely to receive a long COVID diagnosis than White patients, despite similar symptom presentation. This suggests potential diagnostic bias in long COVID assessment, impacting equitable care for this chronic condition.
Area of Science:
- Public Health
- Epidemiology
- Health Disparities
Background:
- Long COVID presents significant health challenges with diagnosis hindered by subjective criteria and unequal healthcare access.
- Variations in diagnosis and treatment underscore the need to investigate potential disparities in care.
Purpose of the Study:
- To examine the association between race and ethnicity and the likelihood of receiving a long COVID diagnosis.
- To identify potential diagnostic biases in long COVID assessment across different racial and ethnic groups.
Main Methods:
- Analysis of electronic health records from 2.4 million patients diagnosed with acute COVID-19 in the US (January 2022 - March 2023).
- Evaluation of 222 symptoms and long COVID diagnoses (ICD-10 code U09.9) within 12 months post-infection.
- Statistical assessment of long COVID diagnosis rates across six race and ethnicity categories, adjusting for covariates and symptom presence.
Main Results:
- Black patients were less likely to be diagnosed with long COVID compared to White patients when symptoms were present and healthcare monitoring was frequent.
- No statistically significant differences in long COVID diagnosis rates were observed for other racial and ethnic groups compared to White patients.
- A small but significant difference in diagnosis likelihood suggests potential diagnostic bias.
Conclusions:
- Findings indicate a potential diagnostic bias against Black patients in the identification of long COVID.
- Addressing diagnostic disparities is crucial for ensuring equitable care and management of long COVID.
- Further research is needed to understand and mitigate biases in long COVID diagnosis.
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