Adjusted odds ratios for breast and cervical cancer, according to time since last use and duration of use of oral and injectable contraceptives.

<p>All ORs 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.</p>a<p>Heterogeneity for duration <5 y versus ≥5 y, within the two categories for time since last use.