title: [Respiratory symptoms associated with air pollution in five localities of Bogotá, 2008-2011, a dynamic cohort study].
abstract: BACKGROUND
  High levels of air pollution increase respiratory morbidity in children under five years of age.
  
  
  OBJECTIVE
  To know the incidence of respiratory symptoms and its associated factors in five localities of Bogota.
  
  
  METHODS
  A dynamic cohort study was undertaken with a sample size of 3,278 children from five localities split into two groups according to the degree of exposure to particulate matter. Monitoring was conducted at the outbreak of ten respiratory symptoms through a diary of those symptoms. Statistical analysis included incidence rate ratio (IRR) calculations and Poisson regression models for each assessed symptom.
  
  
  RESULTS
  Cough was more frequent in the highly exposed group (lRR=1.23, Cl 95% 1.13-1.34). The most exposed group had higher incidence of expectoration (lRR=1.64, Cl= 95% 1.47-1.84). Wheezing was associated with high exposure to particulate matter (RR=2.29, Cl 95% 1.78-3.00), cottage industries (RR=1.29, Cl 95% 1.01-1.68) and age (RR=0.95, Cl 95% 0.94-0.96). Risk attributable to air pollution exposure fluctuated according to symptoms from 37% for nocturnal wheezing (Cl 95% 26-47.8) to 10.6 for cough (Cl 95% 6.3-15%).
  
  
  CONCLUSIONS
  Extradomiciliary air pollution effects are potentiated by socioeconomic living and working conditions of people in Bogota. A broader conceptual public health approach and the strengthening of intersector actions are required to reduce health effects of air pollution.
authors.affiliation: Línea de Aire, Ruido y Radiación Electromagnética, Observatorio de Salud Ambiental, Área de Vigilancia en Salud Pública, Secretaría Distrital de Salud de Bogotá, Bogotá, D.C, Colombia.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Sarmiento
authors.affiliation: Facultad de Medicina, Universidad de los Andes, Bogotá, D.C, Colombia.
authors.forename: Luis Jorge
authors.initials: LJ
authors.lastname: Hernández
authors.affiliation: Línea de Aire, Ruido y Radiación Electromagnética, Observatorio de Salud Ambiental, Área de Vigilancia en Salud Pública, Secretaría Distrital de Salud de Bogotá, Bogotá, D.C, Colombia.
authors.forename: Edna Katalina
authors.initials: EK
authors.lastname: Medina
authors.affiliation: Línea de Aire, Ruido y Radiación Electromagnética, Observatorio de Salud Ambiental, Área de Vigilancia en Salud Pública, Secretaría Distrital de Salud de Bogotá, Bogotá, D.C, Colombia.
authors.forename: Natalia
authors.initials: N
authors.lastname: Rodríguez
authors.affiliation: Línea de Aire, Ruido y Radiación Electromagnética, Vigilancia Sanitaria y Ambiental, Dirección de Salud Pública, Hospital del Sur, Bogotá, D.C, Colombia.
authors.forename: Jesús
authors.initials: J
authors.lastname: Reyes
mesh_terms: D000397:Air Pollution / Q000009:adverse effects*; D002675:Child, Preschool; D015331:Cohort Studies; D003105:Colombia / Q000453:epidemiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012120:Respiration Disorders / Q000453:epidemiology*; D013997:Time Factors; D014504:Urban Health