Increased risk of breakthrough bleeding when one oral-contraceptive tablet is missed.
D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D010349:Patient Compliance; D014592:Uterine Hemorrhage / Q000209:etiology*
D003276:Contraceptives, Oral