title: Accuracy of electoral registers and Family Practitioner Committee lists for population studies of the very elderly.
abstract: OBJECTIVE
  The purpose of the study was to assess the accuracy of Family Practitioner Committee (FPC) lists for identifying very elderly people registered with general practitioners.
  
  
  METHODS
  The accuracy of available FPC lists was checked against the most recent electoral register to determine which recorded individuals were still living at their FPC registered addresses. This was followed by a postal and home visit enquiry to validate the accuracy of the electoral register.
  
  
  METHODS
  The study was carried out in the London borough of Hackney.
  
  
  METHODS
  The investigation was confined to persons aged 85 and over.
  
  
  RESULTS
  Of a total of 3018 people listed as being 85 years or over by the FPC, 1183 (39%) were listed on the electoral register. Of these, 751 (63%) were living at their registered address, ie 25% of the people in the original FPC list. A further 154 (5%) of the original list were not recorded on the electoral register but were alive at the FPC recorded address.
  
  
  CONCLUSIONS
  the use of FPC lists alone to identify the very elderly in an inner city population is too inaccurate to be of value. The combined use of FPC lists and the electoral register is better but one in six persons will still be missed.
authors.affiliation: Department of Community Medicine, City and Hackney Health Authority, London, United Kingdom.
authors.forename: A
authors.initials: A
authors.lastname: Bowling
authors.forename: D
authors.initials: D
authors.lastname: Hart
authors.forename: A
authors.initials: A
authors.lastname: Silman
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005194:Family Practice; D006801:Humans; D008131:London; D011156:Population Density; D011159:Population Surveillance; D012042:Registries