Table 5 Prevalence of COPD across four sites in Peru using the Global Lungs Function Initiative (GLI) mixed ethnic population and Hankinson NHANES III Mexican-American reference equations (p-values calculated using chi-squared or Fisher exact tests)
Lima | Urban Puno | Rural Puno | Tumbes | Overall | P | |
|---|---|---|---|---|---|---|
(n = 998) | (n = 507) | (n = 506) | (n = 946) | |||
COPD prevalence (95% CI) | 6.2 (4.7–7.7) | 6.1 (4.0–8.2) | 9.9 (7.3–12.5) | 3.6 (2.4–4.8) | 6.0 (5.1–6.8) | <0.001 |
GOLD class by GLI, n (%) | ||||||
I | 43 (69.4) | 26 (83.9) | 38 (76.0) | 21 (61.7) | 128 (72.3) | 0.29 |
II | 16 (25.8) | 5 (16.1) | 12 (24.0) | 11 (32.4) | 44 (24.9) | |
III | 3 (4.8) | 0 | 0 | 2 (5.9) | 5 (2.8) | |
GOLD class by NHANES III, n (%) | ||||||
I | 42 (67.7) | 24 (77.4) | 38 (76.0) | 19 (55.9) | 123 (69.5) | 0.26 |
II | 17 (27.4) | 7 (22.6) | 12 (24.0) | 13 (38.2) | 49 (27.8) | |
III | 3 (4.8) | 0 | 0 | 2 (5.9) | 5 (2.8) | |
Post-bronchodilator response in COPD, n (%) | 22 (36%) | 8 (26%) | 13 (26%) | 9 (27%) | 52 (29%) | 0.63 |
Post-bronchodilator response in non-COPD, n (%) | 99 (11%) | 57 (12%) | 78 (17%) | 73 (8%) | 307 (11%) | <0.001 |