Table 1 Characteristics of study participants from NHANES 2013–2018 stratified by COPD status
Characteristic | COPD (N = 661) | Control (N = 10,764) | p |
|---|---|---|---|
Age (years) | 64.3 ± 10.2 | 58.1 ± 11.7 | < 0.001 |
Age (%) | < 0.001 | ||
＜65 years old | 54.5 | 69.8 | |
≥ 65 years old | 45.5 | 30.2 | |
Gender (%) | 0.8290 | ||
Male | 47.6 | 47.2 | |
Female | 52.4 | 52.8 | |
BMI (kg/m2) | 30.0 ± 8.1 | 29.8 ± 6.7 | 0.3203 |
Smoking status (%) | < 0.001 | ||
Current | 46.4 | 66.2 | |
Never | 53.6 | 33.8 | |
Race (%) | < 0.001 | ||
Mexican American | 1.7 | 7.3 | |
Other Hispanic | 2.1 | 5.4 | |
Non-Hispanic White | 80.5 | 68.0 | |
Non-Hispanic Black | 7.2 | 10.8 | |
Other Race | 8.5 | 8.6 | |
Blood eosinophil counts (%) | < 0.001 | ||
< 300/µL | 66.8 | 74.8 | |
≥ 300/µL | 33.2 | 25.2 | |
Annual family income (USD) | < 0.001 | ||
< 35,000 | 58.3 | 28.0 | |
≥ 35,000 and < 100,000 | 33.4 | 41.9 | |
≥ 100,000 | 8.3 | 30.0 | |
Education level (%) | < 0.001 | ||
< High school | 21.4 | 13.8 | |
High school | 34.1 | 22.5 | |
＞High school | 44.5 | 63.7 | |
Asthma (%) | 41.0 | 12.5 | < 0.001 |
chronic bronchitis (%) | 42.1 | 5.4 | < 0.001 |
Emphysema (%) | 35.8 | 0.6 | < 0.001 |
Have one CVD (%) | 57.8 | 22.5 | < 0.001 |
Have two or more CVDs (%) | 31.9 | 6.3 | < 0.001 |
Have three or more CVDs (%) | 18.3 | 2.7 | < 0.001 |
Coronary heart disease (%) | 23.7 | 4.7 | < 0.001 |
Heart failure (%) | 18.9 | 2.8 | < 0.001 |
Angina pectoris (%) | 15.8 | 2.6 | < 0.001 |
Heart attack (%) | 21.9 | 4.3 | < 0.001 |
Diabetes (%) | 29.6 | 15.0 | < 0.001 |
Stroke (%) | 14.1 | 3.9 | < 0.001 |