【摘要】 本文报道434例输精管结扎术后0.5～18月的精液系统复查结果。经用累计百分率和寿命表法统计。以残余精子活力、活精子和精子完全消失的95%上限范围确定避孕时限,分别是:精子活力消失为6月或18次排精;活精子消失为6月或20次排精;精子消失为9月或33次排精。我们推荐残余精子活力和活精子完全消失这两种严格丧失授精能力的标准作为术后避孕时限。经试用寿命表法分析残余精子消失期资料,认为它具有充分利用资料、结果准确合理等优点。更多还原

【Abstract】 This paper reports the result of semen analyses in 434 vasectomized subjects at0.5-18 month intervals following vasectomy.The disappearance of residual spermsat P 95 up limit levels were found to be by cumulative percentage and life-table:6 months or 18 ejaculations for motile sperm disappearance following vasectomy,6months or 20 ejaculations for viable sperm disappearance and 9 months or 33 eja-culstions for spermatic disappearance.Considering the two strict criteria for ferti-lization lost in terms of all the residual sperm becoming dead or immotile,contra-ceptive time should be recommended until 6 months or 20 ejaculations.Our attem-pt to analyze data by life-tables is considered as an advantageous method that canmaximally utilize the data and attain accurate and reasonable results.更多还原