title: Risk factors for ER visits due to asthma exacerbations in patients enrolled in a program for the control of asthma and allergie rhinitis in Feira de Santana, Brazil..
abstract: OBJECTIVE
  To determine the risk factors for ER visits due to asthma exacerbations in patients monitored at a referral center.
  
  
  METHODS
  Prospective cohort study of 253 outpatients (children and adults) with asthma who were monitored for 12 months at the Referral Center of the Program for the Control of Asthma and Allergic Rhinitis in the city of Feira de Santana, Brazil.
  
  
  RESULTS
  Exacerbations were common, and 36.5% of the patients sought ER treatment within the twelve-month period. The risk factors for asthma exacerbations were being over 20 years of age (OR = 1.34: (95% CI: 1.06-1.70), residing in an urban area (OR = 1.19; 95% CI: 1.06-1.33); having a low level of education (OR = 1.53: 95% CI: 1.00-2.39); having severe asthma (OR = 1.65; 95% CI: 1.24-2.18); and having chronic rhinitis (OR = 2.20; 95% CI: 1.00-4.80).
  
  
  CONCLUSIONS
  In this cohort, having chronic rhinitis, having asthma that is more severe and having a low level of education were the main risk factors for ER visits due to asthma exacerbations. These results are similar to those reported for asthma patients who are receiving no regular treatment.
authors.affiliation: Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brasil. helivb@terra.com.br
authors.forename: Heli Vieira
authors.initials: HV
authors.lastname: Brandão
authors.forename: Constança Sampaio
authors.initials: CS
authors.lastname: Cruz
authors.forename: Murilo Cerqueira
authors.initials: MC
authors.lastname: Pinheiro
authors.forename: Edgar Adolfo
authors.initials: EA
authors.lastname: Costa
authors.forename: Armênio
authors.initials: A
authors.lastname: Guimarães
authors.forename: Adelmir
authors.initials: A
authors.lastname: Souza-Machado
authors.forename: Alvaro Augusto
authors.initials: AA
authors.lastname: Cruz
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001249:Asthma / Q000453:epidemiology / Q000209:etiology* / Q000628:therapy; D001938:Brazil / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004522:Educational Status; D004636:Emergency Service, Hospital / Q000706:statistics & numerical data*; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009313:National Health Programs; D012221:Rhinitis, Allergic, Perennial / Q000453:epidemiology / Q000628:therapy*; D012307:Risk Factors; D014505:Urban Population / Q000706:statistics & numerical data; D055815:Young Adult