PIP: 182 of 220 men, 25-54 years of age, who underwent vasectomy, filled out a questionnaire describing how the operation affected their sex life. Nearly all of the men were married and were regularly employed. 86% of those who returned the questionnaire had 2 or 3 children. 99% said that their wives agreed with their decision to undergo vasectomy. 80% chose vasectomy because their wives could not or did not want to use oral contraceptives or other methods, or because they wanted 100% effectiveness. 48 experienced short-term difficulties. 6% reported a decrease in libido or orgasm, and 1% reported a decrease in sexual intercourse after the operation. 86% would recommend the operation to others, 7% would not.