Odds ratio for breast and cervical cancer in relation to use of hormonal contraceptives, according to time since last use.

<p>Adjusted ORs (95% CI) for (A) breast cancer and (B) cervical cancer in relation to use of oral and injectable contraceptives, adjusted for age at diagnosis, year of diagnosis, education, tobacco smoking, alcohol consumption, parity/age at first birth, number of sexual partners, urban/rural residence, and province of birth. Squares represent ORs, and horizontal lines indicate 95% CI. Diamonds represent the ORs and confidence intervals for the group comprising women from all three exposure categories immediately above.