Schwartz D B, Wingo P A, Antarsh L, Smith J C
Division of Reproductive Health, Centers for Disease Control.
Fam Plann Perspect. 1989 Sep-Oct;21(5):209-12.
A study by the Association for Voluntary Surgical Contraception and the Centers for Disease Control estimated that 640,000 tubal sterilizations were performed in the United States during 1987. The majority of these were inpatient procedures (66 percent) performed in civilian or military hospitals. Hospitals were also the site for the largest share of the 215,000 outpatient procedures. Overall, 33 percent of sterilizations were laparoscopies: 10 percent of the inpatient sterilizations and 79 percent of outpatient procedures. The region with the largest number of sterilizations was the South, which also had the smallest proportion done on an outpatient basis.
自愿性手术避孕协会和疾病控制中心开展的一项研究估计，1987年美国进行了64万例输卵管绝育手术。其中大多数是在民用或军队医院进行的住院手术（占66%）。医院也是21.5万例门诊手术的主要实施场所。总体而言，33%的绝育手术是腹腔镜手术：占住院绝育手术的10%，占门诊手术的79%。绝育手术数量最多的地区是南部，该地区门诊手术的比例也是最小的。
