title: Frequency and perception of cough severity.
abstract: OBJECTIVE
  The frequency of the common symptom of cough in children is unknown. The aim of this study was to compare cough frequency and perception of cough severity in children with and without recurrent cough.
  
  
  METHODS
  Eighty-four children with (C) and without (NC) recurrent cough were recruited in the same season. Cough frequency (measured with cough-meter) and subjective cough severity (measured on parent-completed and child-completed diary cards on two subjective systems), were compared between the two groups.
  
  
  RESULTS
  Cough frequency in C (median 65/day) was significantly higher than in NC (10/day). The correlation between daytime and night-time cough was higher in NC (rs = 0.51, P < 0.00001) than in C (rs = 0.3, P = 0.05). The C group had significantly higher coughs per score than NC, for both subjective methods.
  
  
  CONCLUSIONS
  Children with recurrent cough have a higher frequency and different pattern of cough than controls enrolled in the same season. Subjective perception of cough severity is dependent on the population studied.
authors.affiliation: Department of Paediatrics, Flinders University Northern Territory Clinical School, Alice Springs Hospital, Northern Territory, Australia. abchang@mac.com
authors.forename: A B
authors.initials: AB
authors.lastname: Chang
authors.forename: P D
authors.initials: PD
authors.lastname: Phelan
authors.forename: C F
authors.initials: CF
authors.lastname: Robertson
authors.forename: R G
authors.initials: RG
authors.lastname: Newman
authors.forename: S M
authors.initials: SM
authors.lastname: Sawyer
mesh_terms: D000293:Adolescent; D001315:Australia; D002648:Child; D003371:Cough / Q000145:classification / Q000503:physiopathology* / Q000523:psychology; D003631:Day Care, Medical; D005260:Female; D006801:Humans; D008297:Male; D009551:Night Care; D012008:Recurrence