自1989年7月起迄1990年6月底為止，這一年當中，在台大醫院及台北市家庭計劃推廣中心兩處，共有258位個案接受輸精管結紮手術。兩年後每位個案皆以訊方式要求填答關於術前術後性行為差異之問卷，其中209位（81%）回應，即據以統計分析。問卷結果顯示術後對性行為不滿意者未達5%，其中包括性慾減退者3.3%，性交頻度減少者3.8%，勃起感覺較差者1.0%，性生活樂趣減少者4.3%。其性伴侶認為有性行為改變者僅佔4%（其中較差者1.5%，較佳者2.5%）絕大多數結紮個案認為紮術不致影響性行為或更佳。對手術結果相當滿意者佔95%，至於少部份病人性行為之改變，我們認為是年紀大或其他個人因素所致，並非結紮手術引起。結論是輸精管結紮術對性行為並無影響。

Two hundred and fifty-eight vasectomies were performed under the auspices of the outpatient special clinic of National Taiwan University Hospital and the Taipei Family Planning Promotion Center, during the period from July, 1989 to June, 1990. All of the subjects who had undergone vasectomy two years earlier were mailed a questionnaire in 1992 to investigate whether there had been any change in their sexual behaviour after vasectomy. Complete data were available for review in 209 cases (81%). Less than 5% reported negative results which would have decreased libido (3.3%), decreased sexual frequency (3.8%), achieved poor erectile rigidity (1%) and lessened sexual enjoyment (4.3%). Four percent reported that their had noticed an alteration in sexual behaviour after vasectomy. In spite of these changes, the majority of men (95%) reported satisfaction with the results of the operation. It appears that changes in sexual behaviour post-vasectomy can not be attributed directly to that procedure.