Table 5

Association between the GSTT1 genotypea and breast cancer according to menopausal status

GSTT1 presentGSTT1 null
Total
 Controls (%)415 (86.8)63 (13.2)
 Cases (%)411 (85.4)70 (14.6)
 OR b,c (95% CI)1.01.18 (0.80–1.76)
Premenopausal
 Controls (%)176 (87.6)25 (12.4)
 Cases (%)139 (84.8)25 (15.2)
 OR b,c (95% CI)1.01.50 (0.79–2.84)
Postmenopausal
 Controls (%)239 (86.3)38 (13.7)
 Cases (%)272 (85.8)45 (14.2)
 OR b,c (95% CI)1.01.13 (0.67–1.91)
  • a Genotype data missing for four controls and two case patients.

  • b Adjusted for age, age at menarche, age at first full-term pregnancy, number of pregnancies, first-degree family history of breast cancer, and history of benign breast diseases.

  • c Subjects with the GSTT1 present genotype serve as a reference category.