1. Contraceptive efficacy and cycle control with the Ortho Evra™/Evra™ transdermal system: the analysis of pooled data 
Miriam Zieman, M.D., John Guillebaud, F.R.C.O.G., Edith Weisberg, M.B.B.S., Gary A Shangold, M.D., Alan C Fisher, Dr.P.H., George W Creasy, M.D. 
Fertility and Sterility 
Volume 77, Pages (February 2002)
DOI: /S (01)

2. FIGURE 1
Kaplan-Meier plot of on-therapy pregnancies for all women who received the contraceptive patch in three pooled trials.
Zieman. Contraceptive patch efficacy and cycle control. Fertil Steril 2002.
Fertility and Sterility  , 13-18DOI: ( /S (01) )

3. FIGURE 2
Incidence of breakthrough bleeding (BTB) and breakthrough bleeding/spotting, by cycle, in all women who received the contraceptive patch in three pooled trials. Breakthrough bleeding was defined as bleeding requiring more than one pad or tampon per day.
Zieman. Contraceptive patch efficacy and cycle control. Fertil Steril 2002.
Fertility and Sterility  , 13-18DOI: ( /S (01) )