title: [Adjusted clinical groups use at a Spanish primary care center: a retrospective, population-based study].
abstract: OBJECTIVE
  To evaluate the results of implementing a classification system based on adjusted clinical groups (ACG) at a primary health care (PHC) in a Spanish population.
  
  
  METHODS
  A retrospective, cross-sectional study based on the computerized medical records of outpatients seen in 2007 by the La Roca clinic, administered by a health services management company in La Roca del Vallès, Barcelona, Spain. The ACGs were formed according to the International Classification of Diseases, 9th Revision, Clinical Modification. The relative weight of each ACG's total average cost was calculated (in U.S. dollars) and based on these, the resources usage levels were established. The risk index (RI) and efficiency index (EI) for 2006 and the classification's explanatory power were determined.
  
  
  RESULTS
  A total of 8 294 patients were studied (82.7% coverage), with an average of 4.1 incidents per patient, 6.9 visits per patient, and 5.7 visits per person per year. Seven GCAs accounted for 51.0% of patients seen. The RI was 1.015, the EI was 0.975 visits, and the explanatory power of the ACG classification was 53.4% for visits and 74.8% for incidents.
  
  
  CONCLUSIONS
  The ACG system allowed this patient population to be grouped by clinical status, which can help to, among other things, allocate resources and evaluate PHC team efficiency.
authors.affiliation: Dirección de Planificación, Badalona Serveis Assistencials, S.A., Barcelona, Spain. asicras@bsa.cat
authors.forename: Antoni
authors.initials: A
authors.lastname: Sicras-Mainar
authors.forename: Olga
authors.initials: O
authors.lastname: Pané-Mena
authors.forename: Teresa
authors.initials: T
authors.lastname: Martínez-Ruíz
authors.forename: Josep Lluís
authors.initials: JL
authors.lastname: Fernández-Roure
authors.forename: Jordi
authors.initials: J
authors.lastname: Prats-Sánchez
authors.forename: Lourdes
authors.initials: L
authors.lastname: Santafé
authors.forename: Ruth
authors.initials: R
authors.lastname: Navarro-Artieda
authors.forename: Alejandra
authors.initials: A
authors.lastname: Prados-Torres
authors.forename: José
authors.initials: J
authors.lastname: Estelrich-Bennasar
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000554:Ambulatory Care Facilities / Q000706:statistics & numerical data*; D002648:Child; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D003953:Diagnosis-Related Groups; D005260:Female; D006801:Humans; D007223:Infant; D038801:International Classification of Diseases; D008297:Male; D008499:Medical Records / Q000706:statistics & numerical data; D008875:Middle Aged; D009819:Office Visits / Q000706:statistics & numerical data; D011320:Primary Health Care; D012189:Retrospective Studies; D012306:Risk; D013030:Spain / Q000453:epidemiology; D014505:Urban Population; D055815:Young Adult