Increasing trends in the use of breast-conserving surgery in California.
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.
Morris
C R
CR
California Cancer Registry, Public Health Institute, Sacramento, Calif. 95815-4402, USA. cyllene@ccr.ca.gov
Cohen
R
R
Schlag
R
R
Wright
W E
WE
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