title: [Short-term relationship between air pollution and mortality in 13 Spanish cities].
abstract: OBJECTIVE
  EMECAM is a collaborative project that seeks to evaluate the short-term effects of air pollution on mortality in Spain.
  
  
  METHODS
  We collected data for air pollutants (particles and gases), daily mortality (total except external, cardiovascular and respiratory causes) and co-variables (temperature, humidity, influenza and calendar variables) in 13 Spanish cities. The magnitude of the association in every city was estimated using GAM under a Poisson distribution. Combined estimates for each cause and pollutant were obtained under 'fixed effects' and 'random effects'models.
  
  
  RESULTS
  An increase of 10 (g/m3 in the levels of the average of the concurrent and one day lag for black smoke was associated with a 0.8% (CI: 0.4-1.1) increase in mortality. The same increase in the concentration of SO2 was associated with a 0.5% (CI: 0.1-1.0) increase in daily deaths, and a 0.6% (CI: 0.3-0.8) increase in the case of NO2. An increase of 1 mg/m3 in the levels of CO was associated with an increase of 1.5% (CI: 0.5-2.6) in daily deaths.
  
  
  CONCLUSIONS
  There is a short-term association between increases of daily levels of air pollutants and the number of daily deaths in Spanish cities.
authors.affiliation: Unidad de Epidemiología y Estadística. Escola Valenciana d'Estudis per a la Salut (EVES). Conselleria de Sanitat. Generalitat Valenciana. Valencia. España.
authors.forename: Ferran
authors.initials: F
authors.lastname: Ballester
authors.forename: Carmen
authors.initials: C
authors.lastname: Iñíguez
authors.forename: Marc
authors.initials: M
authors.lastname: Sáez
authors.forename: Santiago
authors.initials: S
authors.lastname: Pérez-Hoyos
authors.forename: Antonio
authors.initials: A
authors.lastname: Daponte
authors.forename: José M
authors.initials: JM
authors.lastname: Ordóñez
authors.forename: M Antònia
authors.initials: MA
authors.lastname: Barceló
authors.forename: Margarita
authors.initials: M
authors.lastname: Taracido
authors.forename: Federico
authors.initials: F
authors.lastname: Arribas
authors.forename: Juan
authors.initials: J
authors.lastname: Bellido
authors.forename: Koldo
authors.initials: K
authors.lastname: Cambra
authors.forename: Alvaro
authors.initials: A
authors.lastname: Cañada
authors.forename: José Jesús
authors.initials: JJ
authors.lastname: Guillén
mesh_terms: D000397:Air Pollution / Q000009:adverse effects* / Q000706:statistics & numerical data*; D006801:Humans; D009026:Mortality / Q000639:trends*; D013030:Spain; D013997:Time Factors; D014505:Urban Population