TABLE 1. Nationwide and model-based county-level (n = 3,142) estimates of prevalence and number of adults aged ≥18 years with selected underlying medical conditions that might increase risk for severe COVID-19–associated illness — United States, 2018.
| Selected underlying medical condition* | Nationwide prevalence† % (95% CI) | Median county prevalence§ % (range) | Median county no. of adults† (range) |
|---|---|---|---|
| Any |
40.7 (40.4, 41.0) |
47.2 (22.0–66.2) |
9,743 (41–2,877,316) |
| Obesity (BMI ≥30 kg/m2) |
30.9 (30.6, 31.2) |
35.4 (15.2– 49.9) |
7,174 (25–2,097,906) |
| Diabetes mellitus |
11.4 (11.2, 11.6) |
12.8 (6.1–25.6) |
2,742 (11–952,335) |
| COPD |
6.9 (6.7, 7.0) |
8.9 (3.5–19.9) |
1,962 (7–434, 075) |
| Heart disease |
6.8 (6.7, 7.0) |
8.6 (3.5–15.1) |
1, 811 (7–434,790) |
| Chronic kidney disease | 3.1 (3.0, 3.3) | 3.4 (1.8–6.2) | 717 (3–237,766) |
Abbreviations: BMI = body mass index; CI = confidence interval; COPD = chronic obstructive pulmonary disease; COVID-19 = coronavirus disease 2019.
* Diabetes mellitus includes both type 1 and type 2 diabetes. COPD includes emphysema and chronic bronchitis. Heart disease includes angina or coronary heart disease, and heart attack or myocardial infarction.
† Weighted direct estimates from the Behavioral Risk Factor Surveillance System, 2018.
§ Prevalence and number of adults estimated for 3,142 counties using a multilevel regression and poststratification approach applied to 2018 Behavioral Risk Factor Surveillance System data.