Table 6: Mean altitude and adjusted COPD prevalence by site
|
Mean altitude (m) |
COPD prevalence |
||
Crude |
Adjusted* |
White people only |
||
Mexico City (Mexico) |
2240 |
7.8% (5.9–9.7) |
11.9% (11.3–12.5) |
12.7% (7.6–17.7) |
Caracas (Venezuela) |
950 |
12.1% (10.3–13.9) |
13.0% (12.3–13.6) |
13.5% (10.2–16.7) |
São Paulo (Brazil) |
800 |
15.8% (13.5–18.1) |
14.9% (14.1–15.7) |
16.2% (13.1–19.3) |
Santiago (Chile) |
543 |
16.9% (14.7–19.1) |
14.5% (13.8–15.1) |
17.8% (15.0–20.3) |
Montevideo (Uruguay) |
35 |
19.7% (17.2–22.1) |
19.4% (18.4–20.3) |
20.3% (17.8–22.8) |
p† |
0.0001 |
0.0001 |
0.01 |
|
Data are % (95% CI). *Rates adjusted for age, sex, ethnic origin, education, pack-years of smoking, exposure to domestic biomass and coal pollution, occupational exposure to dust, and body-mass index. †Wald test, taking account of sampling strategy.