Menorrhagia is a common problem impairing the quality of life (QOL) of many women. Both levonorgestrel-releasing intrauterine system (LNG-IUS) and hysterectomy are effective treatment modalities but no long-term comparative studies of QOL and costs exist. The objective of this study was to compare QOL and costs of LNG-IUS or hysterectomy in the treatment of menorrhagia during 10-year follow-up.

A total of 236 women, aged 35-49 years, referred for menorrhagia to 5 university hospitals in Finland were randomly assigned to treatment with LNG-IUS (n = 119) or hysterectomy (n = 117) and were monitored for 10 years. The main outcome measures were health-related QOL (HRQOL), psychosocial well-being, and cost-effectiveness.

A total of 221 (94%) women were followed for 10 years. Although 55 (46%) women assigned to the LNG-IUS subsequently underwent hysterectomy, the overall costs in the LNG-IUS group ($3423) were substantially lower than in the hysterectomy group ($4937). Overall, levels of HRQOL and psychosocial well-being improved during first 5 years but diminished between 5 years and 10 years and the improved HRQOL returned close to the baseline level. There were no significant differences between LNG-IUS and hysterectomy groups.

Both LNG-IUS and hysterectomy improved HRQOL. The improvement was most striking during the first 5 years. Although many women eventually had hysterectomy, LNG-IUS remained cost-effective.