title: The health services utilisation of a general practice population.
abstract: OBJECTIVE
  to establish a viable methodology for the linkage of patients information between general practice and the secondary health care sector. To demonstrate this by examining the activities and cost of health care to a general practice community.
  
  
  METHODS
  the linkage of computerised records was achieved using a unique alpha numeric identifier (the National Master Patient Index number). Using this link all patient activities for one general practice were analysed. Consultations and their outcomes in terms of pathology and radiology requests, prescriptions, and referrals to other health care providers were recorded. Secondary care activities analysed were outpatient, inpatient, day care, and accident and emergency attendances.
  
  
  RESULTS
  the study population of 3611 patients produced 15,453 contacts in general practice (4.3 contacts per person per annum) and 2804 contacts with the secondary care system (0.8 contacts per person per annum). The total government expenditure was $824,567 for general practice care and $1,410,198 for secondary care, ie, $2,234,765 in total or $619 per person.
  
  
  CONCLUSIONS
  this methodology for information linkage provides the potential for comprehensive examination of publicly funded health care in both general practice and hospital settings, thereby promoting better coordinated and more rational planning of services.
authors.affiliation: Research Unit, Royal New Zealand College of General Practitioners, Otago Medical School.
authors.forename: M W
authors.initials: MW
authors.lastname: Tilyard
authors.forename: D E
authors.initials: DE
authors.lastname: Phillips
authors.forename: S M
authors.initials: SM
authors.lastname: Dovey
authors.forename: L
authors.initials: L
authors.lastname: Skelly
authors.forename: R K
authors.initials: RK
authors.lastname: Whitney
mesh_terms: D003365:Costs and Cost Analysis; D005194:Family Practice / Q000191:economics; D005380:Financing, Government; D005102:Health Expenditures / Q000706:statistics & numerical data; D006296:Health Services / Q000191:economics / Q000706:statistics & numerical data*; D006760:Hospitalization / Q000191:economics / Q000706:statistics & numerical data; D009520:New Zealand; D012017:Referral and Consultation / Q000706:statistics & numerical data