title: Increasing trends in the use of breast-conserving surgery in California.
abstract: OBJECTIVE
  The purpose of this study was to determine temporal trends in breast-conserving surgery in California from 1988 through 1995.
  
  
  METHODS
  Logistic regression was used to analyze data on 104,466 cases of early-stage breast cancer reported to the California Cancer Registry.
  
  
  RESULTS
  A monotonically increasing trend in breast-conserving surgery was detected after adjustment for age, race/ethnicity, stage at diagnosis, and neighborhood education level. Breast-conserving surgery increased at similar rates among all racial/ethnic groups. Older age, Asian or Hispanic race/ethnicity, late-stage diagnosis, and residence in an undereducated neighborhood were factors associated with lower use of breast-conserving surgery.
  
  
  CONCLUSIONS
  Although disparities are evident, use of breast-conserving surgery increased steadily in all groups examined in this study.
authors.affiliation: California Cancer Registry, Public Health Institute, Sacramento, Calif. 95815-4402, USA. cyllene@ccr.ca.gov
authors.forename: C R
authors.initials: CR
authors.lastname: Morris
authors.forename: R
authors.initials: R
authors.lastname: Cohen
authors.forename: R
authors.initials: R
authors.lastname: Schlag
authors.forename: W E
authors.initials: WE
authors.lastname: Wright
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001943:Breast Neoplasms / Q000175:diagnosis / Q000601:surgery*; D002140:California; D004522:Educational Status; D005006:Ethnicity; D005260:Female; D006801:Humans; D016015:Logistic Models; D015412:Mastectomy, Segmental / Q000706:statistics & numerical data / Q000639:trends*; D008875:Middle Aged; D015999:Multivariate Analysis