Table 1 Demographics and smoking history: adults ≥45 years, with and without physician-diagnosed COPD: NHANES 1999–2008
Demographic Variables | Without COPD | With COPD |
|---|---|---|
(n = 14,828)a | (n = 995)b | |
Age, mean yr (95% CI) | 60.0 (59.6–60.3) | 62.7 (61.7–63.8) |
Gender | ||
Male % (95% CI) | 47.0 (46.2–47.9) | 39.9 (36.0–44.0) |
Female, % (95% CI) | 53.0 (52.1–53.8) | 60.1 (56.0–64.0) |
Race | ||
White, % (95% CI) | 76.4 (73.5–79.1) | 84.6 (81.4–87.4) |
Black, % (95% CI) | 10.0 (8.5–11.8) | 6.8 (5.1–8.9) |
Hispanic, % (95% CI) | 8.8 (7.0–11.0) | 4.4 (3.0–6.3) |
Smoking History | ||
Ever smoker, % (95% CI) | 52.1 (50.7–53.4) | 68.9 (65.2–72.5) |
> 10 pack years, % (95% CI) | 26.8 (25.7–27.9) | 43.0 (38.7–47.5) |