Bleeding Patterns With Monophasic And Triphasic Low-Dose Ethinyl Estradiol Combined Oral Contraceptives
OBSTETRICS AND GYNECOLOGY(2007)
摘要
Background
This retrospective analysis evaluated the association of age and weight with cycle control in women using either of two formulations of low-estrogen-dose oral contraceptives.
Study Design
Data for this secondary analysis were derived from a randomized multicenter trial assessing the efficacy and safety of norgestimate (NGM) 180/215/250 mcg/ethinyl estradiol (EE) 25 mcg (n=1506) and norethindrone acetate 1 mg/EE 20 mcg (n=1057). In this retrospective analysis, the incidence of breakthrough bleeding/spotting (BTB/S) was evaluated in women stratified by age (18–24, 25–34 and >34 years) and weight (≤123, 124–155 and >155 lb).
Results
A lower percentage of women experienced BTB/S with NGM/EE during most cycles, regardless of age or weight, compared with norethindrone acetate/EE. At Cycle 6, the incidences of BTB/S for NGM/EE versus norethindrone acetate/EE were as follows: 18–24 years, 10.9% versus 29.7% (p<.0001); 25–34 years, 10.9% versus 18.6% (p<.001); >34 years, 8.1% versus 19.1% (p<.005); ≤123 lb, 11.0% versus 25.4% (p<.0001); 124–155 lb, 10.0% versus 22.5% (p<.0001); and >155 lb, 10.0% versus 18.3% (p<.01).
Conclusion
NGM/EE provided better cycle control as defined by BTB/S compared with norethindrone acetate/EE, regardless of subject age or weight for six cycles.
更多查看译文
关键词
oral contraceptive,body weight,age,cycle control
AI 理解论文
溯源树
样例
![](https://originalfileserver.aminer.cn/sys/aminer/pubs/mrt_preview.jpeg)
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要