title: Infectious morbidity in 18-month-old children with and without older siblings.
abstract: BACKGROUND
  Infections are the most commonly reported health problems in children. Younger age and day care outside the home are two factors of importance for infectious morbidity. The influence of siblings on infectious symptoms is not clear.
  
  
  OBJECTIVE
  To compare families with one child and families with more than one child in terms of reported infectious symptoms, physician consultations and antibiotic prescriptions.
  
  
  METHODS
  A prospective population-based survey was performed. During 1 month, all infectious symptoms, physician consultations and antibiotic prescriptions for 18-month-old children were noted by the parents. The 789 families also answered questions about socio-economic factors, numbers of siblings in the family and type of day care.
  
  
  RESULTS
  No difference in number of symptom days was found between children with and without older siblings. Neither could we find any significance in terms of having older siblings in relation to physician consultations and antibiotic prescriptions.
  
  
  CONCLUSIONS
  The results of our study indicate that having older siblings not was important in relation to number of symptoms days, physician consultations or antibiotic prescriptions for 18-month-old children in Sweden today. Changes in social activities and attitudes towards antibiotic prescription may explain our different findings as compared with previous Swedish studies and studies from other countries.
authors.affiliation: Unit of Research and Development, Kronoberg County Council, Växjö, Sweden. katarina.hedin@ltkronoberg.se
authors.forename: Katarina
authors.initials: K
authors.lastname: Hedin
authors.forename: Malin
authors.initials: M
authors.lastname: Andre
authors.forename: Anders
authors.initials: A
authors.lastname: Håkansson
authors.forename: Sigvard
authors.initials: S
authors.lastname: Mölstad
authors.forename: Nils
authors.initials: N
authors.lastname: Rodhe
authors.forename: Christer
authors.initials: C
authors.lastname: Petersson
mesh_terms: D000367:Age Factors; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D016009:Chi-Square Distribution; D002656:Child Day Care Centers / Q000706:statistics & numerical data; D016001:Confidence Intervals; D019538:Health Care Surveys; D006801:Humans; D007223:Infant; D007239:Infections / Q000188:drug therapy / Q000453:epidemiology*; D016017:Odds Ratio; D009863:Only Child / Q000706:statistics & numerical data*; D010290:Parents; D010342:Patient Acceptance of Health Care / Q000706:statistics & numerical data; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data; D011446:Prospective Studies; D035781:Siblings; D012959:Socioeconomic Factors; D013548:Sweden / Q000453:epidemiology
chemical_list: D000900:Anti-Bacterial Agents