Comparison of controlled ovarian superstimulation with or without intrauterine insemination for the treatment of unexplained infertility

This retrospective study was performed to compare the pregnancy rates (PR) in patients treated with either controlled ovarian superstimulation (COS) and intrauterine insemination (IUI) or COS and timed intercourse (TI) in patients with unexplained infertility. Fifty-seven females underwent 98 treatment cycles of COS and IUI and 30 females underwent 96 treatment cycles of COS and TI. Pregnancy rates (PR) per cycle in the groups treated with COS and either IUI or TI were 18.4% and 3.1% respectively (P<0.05). We concluded that COS and IUI an an effective treatment compared with COS and TI in patients with unexplained infertility.