An economic evaluation of outpatient versus inpatient polyp treatment for abnormal uterine bleeding.

Objectives: To undertake a cost-effectiveness analysis of outpatient uterine polypectomy compared with standard inpatient treatment under general anaesthesia. Design: Economic evaluation carried out alongside the multi-centre, pragmatic, non-inferiority, randomised controlled Outpatient Polyp Treatment (OPT) trial. The UK National Health Service (NHS) perspective was used in the estimation of costs and the interpretation of results. Setting: Thirty-one secondary care UK NHS hospitals between April 2008 and July 2011. Participants: Five hundred and seven women with abnormal uterine bleeding and hysteroscopically diagnosed endometrial polyps. Interventions: Outpatient uterine polypectomy versus standard inpatient treatment. Clinicians were free to choose the technique for polypectomy within the allocated setting. Main Outcome Measures: Patient-reported effectiveness of the procedure determined by the women's self-assessment of bleeding at 6 months, and QALY gains at 6 and 12 months. Results: Inpatient treatment was slightly more effective but more expensive than outpatient treatment, resulting in relatively high incremental cost-effectiveness ratios. Intention-to-treat analysis of the base case at 6 months revealed that it cost an additional £9421 per successfully treated patient in the inpatient group and £ 1,099,167 per additional QALY gained, when compared with outpatient treatment. At 12 months, these costs were £22,293 per additional effectively treated patient and £445,867 per additional QALY gained, respectively. Conclusions: Outpatient treatment of uterine polyps associated with abnormal uterine bleeding appears to be more cost-effective than inpatient treatment at willingness-to-pay thresholds acceptable to the NHS. Tweetable Abstract: HTA-funded OPT trial concluded that outpatient uterine polypectomy is cost-effective compared with inpatient polypectomy. [ABSTRACT FROM AUTHOR]

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