title: Nonsteroidal antiinflammatory drugs and breast cancer.
abstract: We examined the association of nonsteroidal antiinflammatory drugs and breast cancer risk in a case-control study of 511 breast cancer patients and 1,534 population control subjects. The relative risk of breast cancer was reduced in women using these compounds at least 3 times per week for > or = 1 year [odds ratio (OR) = 0.66; 95% confidence interval (CI) = 0.52-0.83]. Odds ratios were similar for use of ibuprofen (0.57) or aspirin per se (0.69). Breast cancer risk declined with increasing exposure, and the greatest risk reduction (40%; odds ratio = 0.60; 95% CI = 0.40-0.91) occurred at the highest level of use (daily intake for > or = 5 years). These results indicate that nonsteroidal antiinflammatory drugs may have chemopreventive potential against the development of breast cancer.
authors.affiliation: Comprehensive Cancer Center, Ohio State University, Columbus, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Harris
authors.forename: K K
authors.initials: KK
authors.lastname: Namboodiri
authors.forename: W B
authors.initials: WB
authors.lastname: Farrar
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000008:administration & dosage* / Q000009:adverse effects; D001241:Aspirin / Q000008:administration & dosage / Q000009:adverse effects; D001943:Breast Neoplasms / Q000453:epidemiology / Q000517:prevention & control*; D016022:Case-Control Studies; D016001:Confidence Intervals; D005260:Female; D006801:Humans; D007052:Ibuprofen / Q000008:administration & dosage / Q000009:adverse effects; D008875:Middle Aged; D016017:Odds Ratio; D009820:Ohio / Q000453:epidemiology; D012306:Risk
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D001241:Aspirin; D007052:Ibuprofen