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自１９９４年４～６月共接收对象１８４６人。课题统一设计，统一表格，经过筛选对象随机植入国产Ｉ或Ｉ型皮下埋植剂，术后按期回访。术后６、１２、２４个月时随访率分别为９７．３５％、９９．１２％及９６．１５％；两型的２年末净累积妊娠率分别为０及０．３６８／每百妇女；同期继续使用率分别为９０．６６及８９．５３／每百妇女。两型药物的有效率及继续使用率均无显著性差异（Ｐ＞０．０５）。术后６、１２、２４个月副反应发生率，Ｉ型为６２．３％、３２．８５％、２３．９３％；Ｉ型为６３．６９％、３２．１１％、２２．７１％（Ｐ＞０．０５）。其中以月经异常最常见（占４０％以上），其他依次为类早孕反应、情绪改变等。月经异常经Ｌｏｇｉｓｔｉｃ多元回归分析，年龄越小、孕次越少、文化程度越高，月经异常发生率越高。术后体重、血压、乳房及盆腔等项检查均未发现明显异常。认为国产（Ｉ型、Ｉ型）皮下埋植剂具有长效、高效及可接受性好等优点，可推广使用
From April to June 1994 a total of 1846 people were received. Uniform design of topics, a unified form, after screening randomly selected domestic implants I or I implants, regular follow-up after surgery. At 6, 12 and 24 months after operation, the follow-up rates were 97.35%, 99.12% and 96.15% respectively. At the end of the two years, the net cumulative pregnancy rates were 0 and 0.368 per 100 women respectively. Over the same period continued to use rates were 90.66 and 89.53 / per hundred women. There was no significant difference between the two types of drug efficiency and continue to use (P> 0.05). The incidence of side reactions at 6, 12 and 24 months after operation was 62.3%, 32.85% and 23.93% respectively, while the I type was 63.69%, 32.11% and 22.71% P> 0.05). Among them, the most common menstrual abnormalities (accounting for more than 40%), followed by other types of early pregnancy response, emotional changes. Menstrual abnormalities by Logistic multiple regression analysis, the younger, fewer pregnancies, the higher the level of education, the higher the incidence of abnormal menstruation. Postoperative weight, blood pressure, breast and pelvic examination did not find any significant abnormalities. Domestic (I type, I type) subcutaneous implants that have long-lasting, high efficiency and good acceptability, etc., can be promoted