- A longitudinal study of 50 adolescent girls who desired hormonal contraception
and were willing to try the contraceptive patch was conducted over 3
months. No control group was included in the study.1
were ages 15-18, non-pregnant, with BP<140/90, wt <90kg, and with
no contraindications to hormonal contraceptive use.
Patient compliance and attitudes about transdermal contraceptive were
monitored with questionnaires at 1- and 3-month follow-up visits
19 of 50 patients dropped out of the study or were lost to follow-up
At one month follow-up 36/39 (92.3%) of adolescents reported perfect
compliance (wearing the patch daily). Two participants missed one day
and one missed 2 days (mean days missed = 0.67, SD = 0.82) (1).
At three-month follow-up 27/31 (87.1%) of participants reported perfect
compliance with patch use (mean days missed = 0.33, SD = 0.58) (1)
Girls in the study who had used OCPs in the past found the patch easier
to use (P=0.001) and easier to remember (P=0.001) than OCPs.
In a 13 month, randomized, non-blinded study of adults the mean proportion
of participants' cycles with perfect compliance was 88.2% (811 total
participants, 5141 total cycles) with the patch and 77.7% (605 total
participants, 4134 total cycles) with the OCP (p<0.001)(2). Number
needed to treat is 10 in order to achieve one cycle with perfect complaince
with the patch versus the pill..