ORs and 95% CIs of late-stage vs early-stage breast cancer and colorectal cancer diagnoses by smoking and screening status
| Breast cancer | ||||
| Smoking status | Mammogram ever | Mammogram never OR (95% CI)* | Mammogram ≤2 years ago | Mammogram >2 years ago OR (95% CI)* |
| Overall | Ref | 2.00 (1.35 to 2.94) | Ref | 1.43 (1.18 to 1.75) |
| Never | Ref | 1.59 (0.90 to 2.81) | Ref | 1.32 (1.00 to 1.75) |
| Former | Ref | 2.49 (1.33 to 4.67) | Ref | 1.27 (1.00 to 1.89) |
| Current | Ref | 2.95 (1.12 to 7.78) | Ref | 2.78 (1.64 to 4.70) |
| Colorectal cancer | ||||
| Smoking status | FOBT/endoscopy ever |
FOBT/endoscopy never
OR (95% CI)† | FOBT/endoscopy ≤5 years ago |
FOBT/endoscopy >5 years ago
OR (95% CI)† |
| Overall | Ref | 1.20 (0.90 to 1.61) | Ref | 1.05 (0.79 to 1.39) |
| Never | Ref | 1.12 (0.74 to 1.70) | Ref | 0.96 (0.65 to 1.43) |
| Former | Ref | 1.27 (0.82 to 1.96) | Ref | 0.95 (0.62 to 1.48) |
| Current | Ref | 1.19 (0.51 to 2.83) | Ref | 2.26 (1.01 to 5.05) |
*Multivariate-adjusted: age, ethnicity, BMI, age at menarche, age at first birth, number of children breastfed, hormone therapy use, family history of breast cancer, history of benign breast disease, education level, annual household income, insurance, healthcare provider, alcohol intake.
†Multivariate-adjusted: age, ethnicity, BMI, family history of colorectal cancer, inflammatory bowel disease, aspirin use, education level, annual household income, insurance, healthcare provider, alcohol intake.