title: What can analysis of calls to NHS direct tell us about the epidemiology of gastrointestinal infections in the community?
abstract: OBJECTIVE
  Most gastrointestinal (GI) illness within the UK goes undetected by routine surveillance. A national telephone helpline for health advice (NHS Direct) offers a new source of data on GI infection. We aim to describe NHS Direct calls suggestive of GI infection and the outcome of these calls.
  
  
  METHODS
  Details of over 150000 telephone calls were collected from NHS Direct over a 6-month period. Calls about 'diarrhoea', 'vomiting' or 'food poisoning' were defined as GI calls and described according to the age of the patient and call outcome.
  
  
  RESULTS
  Gastrointestinal calls accounted for 10.3% of total calls ('diarrhoea'=4.9%, 'vomiting'=5.1%). GI calls as a proportion of total calls were significantly high in children under 1 year (23.5%) and aged 1-4 years (21.5%). Call outcomes which resulted in further NHS care being recommended accounted for 72.3% of total calls and 54.5% of GI calls.
  
  
  CONCLUSIONS
  A high proportion of NHS Direct calls were about GI symptoms especially for children under 5 years. When compared with all NHS Direct calls, GI calls were less likely to result in further NHS care being recommended. Analysis of NHS Direct calls provides further insight into GI infection in the community.
authors.affiliation: The Communicable Disease Surveillance Centre (West Midlands), 2nd Floor, Lincoln House, Birmingham Heartlands Hospital, Bordesley Green, Birmingham, B9 5SS, UK. dcooper@phls.org.uk
authors.forename: D L
authors.initials: DL
authors.lastname: Cooper
authors.forename: G E
authors.initials: GE
authors.lastname: Smith
authors.forename: S J
authors.initials: SJ
authors.lastname: O'Brien
authors.forename: V A
authors.initials: VA
authors.lastname: Hollyoak
authors.forename: M
authors.initials: M
authors.lastname: Baker
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003967:Diarrhea / Q000453:epidemiology; D005517:Foodborne Diseases / Q000453:epidemiology; D005767:Gastrointestinal Diseases / Q000453:epidemiology*; D006801:Humans; D007223:Infant; D008875:Middle Aged; D009313:National Health Programs; D013689:Telephone; D006113:United Kingdom / Q000453:epidemiology; D014839:Vomiting / Q000453:epidemiology