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美国、加拿大、英国已逐渐采用事后片来进行节育。目前应用的事后片有炔雌醇(EE)每天5mg连服5天和EE200μg加18-甲基炔诺酮2mg复合片(EE+NG)于性交后72小时内服药一次。本研究对此两种方法的有效率和耐受性进行比较。选择月经规则,非哺乳期。不服其他药物的妇女493例随机分组,双盲法试验。随访率为94.3%,在随访到的465例中服EE5mg者(EE组)226例,服EE+NG者(EE+NG组)239例,两组年龄无显著差异。EE组211例中93%在性交后24小时内使用,
The United States, Canada, Britain have gradually adopted after-hours films for birth control. The current post-application ethinyl estradiol (EE) 5mg daily for 5 days and EE200μg plus 18-norgestrel 2mg composite tablets (EE + NG) administered within 72 hours after sexual intercourse. This study compared the efficacy and tolerability of these two methods. Select the rules of menstruation, non-lactation. 493 women who did not accept other drugs were randomly assigned to double-blind trial. The follow-up rate was 94.3%. Of the 465 patients who received EE5mg (EE group), 226 were followed up and 239 patients were EE + NG (EE + NG group). There was no significant difference between the two groups. 93% of 211 patients in the EE group were used within 24 hours after sexual intercourse,