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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)

From: Prevalence of chronic obstructive pulmonary disease and variation in risk factors across four geographically diverse resource-limited settings in Peru

  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