References
- Rosenberg MJ, Waugh MS, Long S. Unintended pregnancies and use, misuse and discontinuation of oral contraceptives. J Reprod Med 1995;40:355–60.
- Hughey AB, Neustadt AB, Mistretta SQ, . Daily context matters: Predictors of missed oral contraceptive pills among college and graduate students. Am J Obstet Gynecol 2010;203:323, e321–7.
- Smith JD, Oakley D. Why do women miss oral contraceptive pills? An analysis of women's self-described reasons for missed pills. J Midwifery Womens Health 2005; 50:380–5.
- Oakley D, Yu MY, Zhang YM, . Combining qualitative with quantitative approaches to study contraceptive pill use. J Womens Health 1999;8:249–57.
- Ahrendt HJ, Nisand I, Bastianelli C, . Efficacy, acceptability and tolerability of the combined contraceptive ring, NuvaRing, compared with an oral contraceptive containing 30 microg of ethinyl estradiol and 3 mg of drospirenone. Contraception 2006;74:451–7.
- Merki-Feld GS, Hund M. Clinical experience with NuvaRing in daily practice in Switzerland: Cycle control and acceptability among women of all reproductive ages. Eur J Contracept Reprod Health Care 2007; 12:240–7.
- Roumen F. Contraceptive efficacy and tolerability with a novel combined contraceptive vaginal ring, NuvaRing. Eur J Contracept Reprod Health Care 2002;7(Suppl. 2):19–24; discussion: 37–9.
- Burkman RT. Transdermal hormonal contraception: Benefits and risks. Am J Obstet Gynecol 2007;197:134, e131–136.
- Upson K, Reed SD, Prager SW, . Factors associated with contraceptive nonuse among US women ages 35–44 years at risk of unwanted pregnancy. Contraception 2010;81:427–4.
- Tschudin S, Alder J, Merki GS, . Contraceptive counseling by gynecologists – Which issues are discussed and does gender play a role? J Psychosom Obstet Gynaecol 2007;28:13–9.
- Qin JP, Chen S, Di N, . [Evaluation of the effect of post-abortion counseling and education among unmarried abortion adolescents]. Zhonghua Fu Chan Ke Za Zhi 2010;45:201–4.
- Halpern V, Grimes DA, Lopez L, . Strategies to improve adherence and acceptability of hormonal methods for contraception. Cochrane Database Syst Rev 2006:CD004317.
- May WL, Johnson WD. A SAS(R) macro for constructing simultaneous confidence intervals for multinomial proportions. Comput Meth Prog Bio 1997;53:153–62.
- Branden PS. Contraceptive choice and patient compliance. The health care provider's challenge. J Nurse Midwifery 1998;43:471–82.
- Dehlendorf C, Diedrich J, Drey E, . Preferences for decision-making about contraception and general health care among reproductive age women at an abortion clinic. Patient Educ Couns 2010;81:343–8.
- Weisman CS, Maccannon DS, Henderson JT, . Contraceptive counseling in managed care: Preventing unintended pregnancy in adults. Womens Health Issues 2002;12:79–95.
- Dayal M, Barnhart KT. Noncontraceptive benefits and therapeutic uses of the oral contraceptive pill. Semin Reprod Med 2001;19:295–303.
- Milsom I, Lete I, Bjertnaes A, . Effects on cycle control and bodyweight of the combined contraceptive ring, NuvaRing, versus an oral contraceptive containing 30 microg ethinyl estradiol and 3 mg drospirenone. Hum Reprod 2006;21:2304–11.
- Fisher WA, Black A. Contraception in Canada: A review of method choices, characteristics, adherence and approaches to counselling. CMAJ 2007;176:953–61.
- Spencer AL, Bonnema R, McNamara MC. Helping women choose appropriate hormonal contraception: update on risks, benefits, and indications. Am J Med 2009;122:497–506.
- Duijkers I, Killick S, Bigrigg A, . A comparative study on the effects of a contraceptive vaginal ring NuvaRing and an oral contraceptive on carbohydrate metabolism and adrenal and thyroid function. Eur J Contracept Reprod Health Care 2004;9:131–40.
- Rosenberg MJ, Waugh MS. Oral contraceptive discontinuation: A prospective evaluation of frequency and reasons. Am J Obstet Gynecol 1998;179:577–82.