title: [Prevalence of cancer in the Guadalajara health area].
abstract: OBJECTIVE
  To quantify the prevalence of cancerand its distribution in adults.
  
  
  METHODS
  Descriptive study of point prevalence through research into primary and secondary sources.
  
  
  METHODS
  Primary care, Guadalajara Health Region. 133 539 people over 14 years old.
  
  
  METHODS
  Patients previously diagnosed with cancer, who had a health card in the health area in June 1999.
  
  
  METHODS
  Demographic and diagnostic details (location according to CIE-9, date and diagnostic method).
  
  
  METHODS
  primary care clinical records, cancer morbidity records and attendance orders. Overall crude and adjusted rates, in function of sex and age group, and specific to locations, were calculated. They were compared with data from other studies and data calculated for Spain on the basis of WHO information.
  
  
  RESULTS
  2717 tumours (2595 patients). Mean age, 68.2 (95% CI, 67.6-68.7); diagnostic age, 62.8 (95% CI, 62.1-63.5), in both cases higher in men (P<.01). Most common tumours: prostate, bladder, colon and lung (men); breast, colon, endometrium and ovaries (women). Crude prevalence: men, 2303.8/100 000; women, 1763.8. Adjusted to world population: 1394.2 and 1227.4/100 000, respectively (prevalence ratio, 1.14; 95% CI, 1.03-1.25). Truncated rate higher in women than in men (1638/100 000 against 1308). Five-year period with highest prevalence: 75-79 years old in men (8763.5/100 000) and 80-84 in women (4558.7/100 000).
  
  
  CONCLUSIONS
  Cancer prevalence in adults is slightly above 2%. Once adjusted for age, values are similar to other studies and as expected for our country. The most common tumours are in the digestive apparatus, breast and the genito-urinary system. The man/woman proportion is higher than that described in other studies.
authors.affiliation: Gerencia de Atención Primaria de Salud. Guadalajara. España. jalonso@gapgu06.insalud.es
authors.forename: J M
authors.initials: JM
authors.lastname: Alonso Gordo
authors.forename: A
authors.initials: A
authors.lastname: Bárcena Marugán
authors.forename: D
authors.initials: D
authors.lastname: Jiménez Del Val
authors.forename: J J
authors.initials: JJ
authors.lastname: Palacios Rojo
authors.forename: C
authors.initials: C
authors.lastname: Royo Sánchez
authors.forename: J
authors.initials: J
authors.lastname: Urbina Torija
mesh_terms: D006801:Humans; D009369:Neoplasms; D015995:Prevalence; D011320:Primary Health Care; D013030:Spain / Q000453:epidemiology
vernacular_title: Prevalencia de cáncer en el área de salud de Guadalajara.