This supplementary appendix provides additional information to the original study by Price-Haywood et al., which examines hospitalization and mortality differences between black and white patients with Covid-19. It includes several tables and methods: 1. **Supplementary Methods**: Describes the methods used to assess exposure to critical care services, including unadjusted and multivariable Cox proportional hazards models. Four models were constructed to evaluate the impact of race, age, sex, pre-admission characteristics, and vital signs on the need for critical care. 2. **Table S1**: Standardized differences of group means (deceased vs. not deceased) of clinical characteristics of hospitalized patients via multiple imputations (n=50). 3. **Table S2**: Standardized differences of group proportions (deceased vs. not deceased) of clinical characteristics of hospitalized patients via multiple imputations (n=50). 4. **Table S3**: Clinical course of COVID-19 positive patients requiring critical care. 5. **Table S4**: Hazard ratios for requiring critical care among patients hospitalized with COVID-19, presented with 95% confidence intervals. The hazard ratios are derived from four models: (1) base model with race effect only, (2) model 1 with additional covariates for age and sex, (3) model 2 with additional covariates for pre-admission patient characteristics, and (4) model 3 with additional covariates for vital signs and laboratory measures at hospital admission. The appendix also includes criteria for determining imbalance in covariates (standardized difference > 0.1) and details on the selection of variables for each model.This supplementary appendix provides additional information to the original study by Price-Haywood et al., which examines hospitalization and mortality differences between black and white patients with Covid-19. It includes several tables and methods: 1. **Supplementary Methods**: Describes the methods used to assess exposure to critical care services, including unadjusted and multivariable Cox proportional hazards models. Four models were constructed to evaluate the impact of race, age, sex, pre-admission characteristics, and vital signs on the need for critical care. 2. **Table S1**: Standardized differences of group means (deceased vs. not deceased) of clinical characteristics of hospitalized patients via multiple imputations (n=50). 3. **Table S2**: Standardized differences of group proportions (deceased vs. not deceased) of clinical characteristics of hospitalized patients via multiple imputations (n=50). 4. **Table S3**: Clinical course of COVID-19 positive patients requiring critical care. 5. **Table S4**: Hazard ratios for requiring critical care among patients hospitalized with COVID-19, presented with 95% confidence intervals. The hazard ratios are derived from four models: (1) base model with race effect only, (2) model 1 with additional covariates for age and sex, (3) model 2 with additional covariates for pre-admission patient characteristics, and (4) model 3 with additional covariates for vital signs and laboratory measures at hospital admission. The appendix also includes criteria for determining imbalance in covariates (standardized difference > 0.1) and details on the selection of variables for each model.