A Population-Based Cohort Study on Chronic Obstructive Pulmonary Disease in Latin America: Methods and Preliminary Results. The PLATINO Study Phase II

作者：Menezes Ana Maria Baptista^*; Muino Adriana; Lopez Varela Maria Victorina; Valdivia Gonzalo; Li**oa Carmen; Jardime Jose Roberto; de Oca Maria Montes; Talamo Carlos; Wehrmeister Fernando Cesar; Perez Padilla Rogelio; Platinoo Equipo del Estudio

来源：Archivos de Bronconeumologia, 2014, 50(1): 10-17.

DOI：10.1016/j.arbres.2013.07.014

• Chronic obstructive pulmonary disease
• Longitudinal studies
• Latin America

Background: The PLATINO baseline study, conducted from 2003-2005 in five Latin American cities (Sao Paulo, Mexico City, Montevideo, Santiago, Caracas), showed a high prevalence of chronic obstructive pulmonary disease (COPD).
Methods/design: A follow-up study was conducted in three out of the five centers (Montevideo, Santiago, and Sao Paulo) after a period of 5, 6 and 9 years, respectively, aimed at verifying the stability of the COPD diagnosis over time, the evolution of the disease in terms of survival, morbidity and respiratory function, and the analyses of inflammatory and genetic biomarkers in the blood. Some questions were added to the original questionnaire and death certificates were obtained from the national official registries.
Results: The fieldwork has been concluded in the three centers. From the original samples in the PLATING study phase I, we were able to locate and interview 85.6% of patients in Montevideo, 84.7% in Santiago and 77.7% in Sao Paulo. Individuals who could not be located had higher education levels in Brazil, and were more likely to be current smokers in Santiago and Sao Paulo than in Montevideo. The overall quality of spirometries was >= 80% according to American Thoracic Society criteria. The number of deaths was 71 (Montevideo), 95 (Santiago) and 135 (Sao Paulo), with death certificates obtained from the national mortality registries for 76.1%, 88.3% and 91.8% of cases in Montevideo, Santiago and Sao Paulo, respectively.
Conclusions: This study shows that is possible to perform population-based longitudinal studies in Latin American with high follow-up rates and high-quality spirometry data. The adequacy of national mortality registries varies among centers in Latin America.

• 出版日期2014-1