Causes and consequences of oral contraceptive noncompliance.

Compliance difficulties are more common among oral contraceptive users than is generally appreciated. Inconsistent use and method discontinuation are estimated to account for approximately 20% of the annual 3.5 million annual unintended pregnancies in the United States. In the past research focused on adolescents, for whom predictors of poor oral contraceptive compliance include multiple sex partners, low evaluation of personal health, low degree of concern about pregnancy, and previous abortion. More recent research confirms that compliance problems are common among all age groups, with 47% of women missing >/=1 pill per cycle and almost a quarter (22%) missing >/=2 pills per cycle. Good compliance has been linked to patient satisfaction with the clinician, the absence of certain side effects, establishing a regular daily routine to take oral contraceptives, and reading information distributed with oral contraceptive packaging. Clinicians are the focal point for improving oral contraceptive compliance. They should focus counseling on the transience of most side effects, instructions on dealing with a missed pill, provision of a backup method, and establishment of a daily pill-taking routine. Easy-to-understand literature should be given to patients to take home.