title: Surgical treatment of breast cancer in New South Wales 1991, 1992.
abstract: BACKGROUND
  The purpose of this study was to examine existing data on women diagnosed with breast cancer in New South Wales in 1991 and 1992 and to describe surgical treatments received on an inpatient basis.
  
  
  METHODS
  Analyses were based on the linkage of two databases: the New South Wales Central Cancer Registry and the New South Wales Health Department's Inpatient Statistics Collection. Data were limited to women who were resident and treated in New South Wales. Main analyses were restricted to definitive surgical procedures.
  
  
  RESULTS
  Thirty-six per cent of women treated surgically for breast cancer in 1991 had breast-conserving therapy. This had increased to 39% in 1992. There were substantial geographical variations in the use of breast-conserving therapy in New South Wales which could not be explained by patient characteristics. Age, degree of spread at diagnosis, and area health service/ health region were all found to have an independent association with the probability of having a mastectomy.
  
  
  CONCLUSIONS
  Women with a localized degree of spread living in non-metropolitan areas (Health Regions) were almost twice as likely to have a mastectomy as compared with similar women who were resident in metropolitan areas (Area Health Services). The concentration of radiotherapy services may have contributed to the urban/rural variation in breast-conserving therapy in New South Wales, but it is also likely that some of the variations that were observed may be a reflection of the failure of clinicians to use best current practice.
authors.affiliation: New South Wales Health Department, North Sydney, Australia.
authors.forename: P
authors.initials: P
authors.lastname: Adelson
authors.forename: K
authors.initials: K
authors.lastname: Lim
authors.forename: T
authors.initials: T
authors.lastname: Churches
authors.forename: R
authors.initials: R
authors.lastname: Nguyen
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000453:epidemiology / Q000473:pathology / Q000601:surgery*; D005260:Female; D006801:Humans; D008408:Mastectomy / Q000706:statistics & numerical data*; D015410:Mastectomy, Extended Radical / Q000706:statistics & numerical data; D015409:Mastectomy, Radical / Q000706:statistics & numerical data; D015413:Mastectomy, Simple / Q000706:statistics & numerical data; D008875:Middle Aged; D009517:New South Wales / Q000453:epidemiology; D016017:Odds Ratio; D012042:Registries