Health-related quality of life after risk-reducing hysterectomy: a randomised vignette study.
BACKGROUND: Risk-reducing hysterectomy (RRH) is the most effective endometrial cancer preventive strategy. Understanding health-related quality-of-life using health-related utility-scores (HRUS) is essential for counselling, shared decision-making, and informing health-economic evaluations of endometrial cancer prevention. This study aimed to determine HRUS for premenopausal RRH, with and without bilateral salpingo-oophorectomy (BSO). METHODS: Preventing Endometrial-Cancers: Comparing Risk-Reducing Strategies (PRESCORES) (ISRCTN17432105) part-2 is a UK-based randomised vignette study. Following a robust development process, vignettes described four postoperative health-states for a 40-year-old otherwise-healthy woman: "RRH at 1-month", "RRH at 1-year", "RRH-BSO at 1-month", "RRH-BSO at 1-year". These were valued using EQ-5D by participants recruited from the UK general-population and HRUS calculated. Utilities were subsequently adjusted by age-and sex-matched general-population reference values. Association of variables was explored with ordinary-least-squares regression with non-parametric bootstrapping. FINDINGS: Overall, 1001 women were included and randomised to 1-of-4 groups. The mean-age(±SD) was 53.6 (±11.4) years. Mean(±SD) HRUS were 0.942 (±0.072) for "RRH at 1-year", 0.841 (±0.137) for "RRH-BSO at 1-year", 0.670 (±0.149) for "RRH at 1-month", and 0.733 (±0.190) for "RRH-BSO at 1-month", with significant difference between each group (p < 0.001). Adjusting for age-sex-matched population reference utilities, HRUS were 1.000(95% CI:1.00-1.00), 0.994(95% CI:0.97-1.00), 0.866(95% CI:0.84-0.90) and 0.791(95% CI:0.77-0.81), respectively. Participant factors associated with vignette valuations included age, obesity, heavy menstrual-bleeding, higher income and mixed/other ethnicity. CONCLUSION: This randomised study provides HRUS following premenopausal RRH with and without BSO at two postoperative time-points, with adjustment against the age-and sex-matched general reference-population. These values are of relevance for informing counselling of women at increased endometrial cancer-risk regarding RRH and for health-economic evaluations.