title: Controlled ovarian hyperstimulation and intrauterine insemination in subfertility. How many treatment cycles are sufficient?
abstract: OBJECTIVE
  To examine the combined effects of factors influencing the pregnancy rates following controlled ovarian hyperstimulation (COH) and intrauterine insemination (IUI).
  
  
  METHODS
  After utilizing the couple as the unit of analysis, 416 couples undergoing COH and IUI with the husband's sperm were studied retrospectively.
  
  
  RESULTS
  The woman's age, postwash total motile sperm counts and number of IUI treatment cycles were three major factors that affected the results of IUI. The predicted cumulative pregnancy rates under different values of the above three factors were therefore calculated using multiple logistic regression analysis and were compared to the pregnancy rate achieved by a cycle of in vitro fertilization and tubal embryo transfer.
  
  
  CONCLUSIONS
  Three treatment cycles of IUI are optimal for women aged < or = 34 with postwash total motile sperm counts > 5 x 10(6). For women either aged > or = 35 or with postwash total motile sperm counts < 5 x 10(6), the cumulative pregnancy rates achieved by IUI are extremely low, and other means of assisted reproduction are recommended for couples in those categories. However, this conclusion pertains to our clinics, and other institutions should establish their own data.
authors.affiliation: Department of Obstetrics and Gynecology, College of Medicine, National Taiwan University, Taipei.
authors.forename: J H
authors.initials: JH
authors.lastname: Yang
authors.forename: M Y
authors.initials: MY
authors.lastname: Wu
authors.forename: K H
authors.initials: KH
authors.lastname: Chao
authors.forename: S U
authors.initials: SU
authors.lastname: Chen
authors.forename: H N
authors.initials: HN
authors.lastname: Ho
authors.forename: Y S
authors.initials: YS
authors.lastname: Yang
mesh_terms: D000328:Adult; D000367:Age Factors; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000628:therapy*; D007248:Infertility, Male; D007317:Insemination, Artificial, Homologous / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010062:Ovulation Induction; D011247:Pregnancy; D011256:Pregnancy Outcome; D014599:Uterus