大多数妇女采用传统的周期性口服复方避孕药方案,即28 d为一个周期,服用21 d雌孕激素,7 d停药或服用安慰剂,停药后发生撤退性出血。所谓连续性给药是连续服用复方雌孕激素制剂不间断。目前文献中无有关比较连续性用药与传统周期性用药方案两者的安全性、效用、副作用和潜在利弊的研究。研究旨在对周期性或连续性应用20μg乙炔E_2/100μg左炔诺孕酮的口服复方避孕药方案的出血情况和 Most women used the traditional periodic oral contraceptive regimen, 28 days for one cycle, 21 days of estrogen and progesterone, 7 days of withdrawal or placebo, and withdrawal bleeding after withdrawal. The so-called continuous administration is continuous taking compound estrogen and progestogen preparations uninterrupted. There are no studies in the current literature on the safety, utility, side effects, and potential pros and cons of comparing continuous versus traditional periodic drug regimens. The aim of the study was to determine the bleeding and how well the oral contraceptive regimen of 20 μg acetylene E 2/100 μg levonorgestrel was administered periodically or sequentially and