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Table 1 Outcome criteria in the PLATINO project.

From: The Platino project: methodology of a multicenter prevalence survey of chronic obstructive pulmonary disease in major Latin American cities

Outcome Definition*
Spirometric criteria*  
FIXED RATIO Post-bronchodilator FEV1/FVC < 70% [10]
GOLD Post-bronchodilator FEV1/FVC < 70 and FEV1 < 80% of predicted value [10]
ATS Post-bronchodilator FEV1/FVC below the 5th percentile and FEV1 < 100% of predicted value [11]
ERS Post-bronchodilator FEV1/FVC < 88% of the predicted value for men and < 89% for women [12]
Symptom-based criteria  
Chronic bronchitis Cough with phlegm for at least 3 months a year in the last 2 years
Asthma Wheezing within the last 12 months
Emphysema Breathlessness due to exercise
Medical diagnosis  
COPD Reported lifetime diagnosis of COPD
Chronic bronchitis Reported lifetime diagnosis of chronic bronchitis
Emphysema Reported lifetime diagnosis of emphysema
Asthma Reported lifetime diagnosis of asthma
  1. FEV1 = forced expiratory volume in the first second; FVC = forced vital capacity For initial analyses of lung function measurements, the NHANES III Mexican American reference values were used [13].