Table 1– Chronic bronchitis# in subjects with chronic obstructive pulmonary disease (COPD) by study site
Total nProportion with chronic bronchitisAdjusted proportion+
n (%)(95% CI)%(95% CI)
Country
 Saõ Paulo, Brazil15221 (13.8)(8.4–19.3)14.3(10.2–19.6)
 Santiago, Chile19826 (13.1)(8.4–17.9)14.4(11.2–18.3)
 Mexico City, Mexico789 (11.5)(5.1–18.0)14.4(11.5–17.8)
 Montevideo, Uruguay17417 (9.8)(5.0–14.6)14.4(11.1–18.6)
 Caracas, Venezuela15723 (14.7)(9.2–20.1)14.5(10.1–20.3)
Total75996 (12.6)(10.3–15.0)14.4(11.5–17.8)
  • #: defined as phlegm on most days, at least 3 months per year for ≥2 yrs; : there were no significant differences between countries, overall p=0.699; +: of persons with chronic bronchitis adjusted for age and sex assessed using the Wald test and adjusted for survey design.