Table 1. Comparison of CCC, CCI, and ECI Comorbidity Evaluations.
| CCC | CCI | ECI | |
|---|---|---|---|
| Active cancer | 1 | 2 | 7 |
| HIV/AIDS | 1 | 6 | 0 |
| Chronic obstructive pulmonary disease (COPD/asthma) | 1 | 3 | 3 |
| CHF | 1 | 3 | 9 |
| Hypertension | 1 | 1 | 0a |
| Coronary artery disease/myocardial infarction | 1 | 1 | (0) |
| Cerebrovascular accident (CVA) | 1 | 1 | 5 |
| Diabetes | 1 | 3 | 0 |
| Obesity | 1 | (0) | 0a |
| Chronic renal diseases | 1 | 2 | 6 |
| Liver cirrhosis | 1 | 3 | 4 |
CCCs (0 - 11): each chronic condition is equally weighted. CCI: obesity not listed in CCI (0 - 25); ECI (AHRQ algorithm, 0 - 34): coronary artery disease/myocardial infarction not listed in ECI, HIV/AIDS and diabetes with no complication were listed as “0”. aObesity was scored as -5 and hypertension was scored as -1 in the original ECI AHRQ algorithm. However, due to previous report of risks of obesity and hypertension in COVID-19 patients, to avoid the offset effect of other CCCs, we scored obesity and hypertension as 0 in this study. CCC: COVID-related high-risk chronic condition; CCI: Charlson Comorbidity Index; ECI: Elixhauser Comorbidity Index; HIV/AIDS: human immunodeficiency virus/acquired immunodeficiency syndrome; CHF: congestive heart failure; AHRQ: Agency for Healthcare Research and Quality; COVID-19: coronavirus disease 2019.