title: Duration of symptoms of respiratory tract infections in children: systematic review.
abstract: OBJECTIVE
  To determine the expected duration of symptoms of common respiratory tract infections in children in primary and emergency care.
  
  
  METHODS
  Systematic review of existing literature to determine durations of symptoms of earache, sore throat, cough (including acute cough, bronchiolitis, and croup), and common cold in children.
  
  
  METHODS
  PubMed, DARE, and CINAHL (all to July 2012).
  
  
  METHODS
  Randomised controlled trials or observational studies of children with acute respiratory tract infections in primary care or emergency settings in high income countries who received either a control treatment or a placebo or over-the-counter treatment. Study quality was assessed with the Cochrane risk of bias framework for randomised controlled trials, and the critical appraisal skills programme framework for observational studies.
  
  
  METHODS
  Individual study data and, when possible, pooled daily mean proportions and 95% confidence intervals for symptom duration. Symptom duration (in days) at which each symptom had resolved in 50% and 90% of children.
  
  
  RESULTS
  Of 22,182 identified references, 23 trials and 25 observational studies met inclusion criteria. Study populations varied in age and duration of symptoms before study onset. In 90% of children, earache was resolved by seven to eight days, sore throat between two and seven days, croup by two days, bronchiolitis by 21 days, acute cough by 25 days, common cold by 15 days, and non-specific respiratory tract infections symptoms by 16 days.
  
  
  CONCLUSIONS
  The durations of earache and common colds are considerably longer than current guidance given to parents in the United Kingdom and the United States; for other symptoms such as sore throat, acute cough, bronchiolitis, and croup the current guidance is consistent with our findings. Updating current guidelines with new evidence will help support parents and clinicians in evidence based decision making for children with respiratory tract infections.
authors: Department of Family Medicine, Box 354696, University of Washington, Seattle, WA 98195-4696, USA.
authors: Matthew
authors: M
authors: Thompson
authors: Talley A
authors: TA
authors: Vodicka
authors: Peter S
authors: PS
authors: Blair
authors: David I
authors: DI
authors: Buckley
authors: Carl
authors: C
authors: Heneghan
authors: Alastair D
authors: AD
authors: Hay
mesh_terms: D001988:Bronchiolitis / Q000473:pathology; D002648:Child; D003371:Cough / Q000473:pathology; D004632:Emergency Medical Services; D006801:Humans; D010612:Pharyngitis / Q000473:pathology; D011320:Primary Health Care; D012141:Respiratory Tract Infections / Q000473:pathology*; D013997:Time Factors