Table 3. Results of the baseline cost-utility analysis for RRD surgery in an elderly population (bootstrap, n = 1000).
| Total | 70s | 80s | P value* | |
| Utility value before surgery [Mean (SD)] | 0.77(0.12) | 0.76(0.13) | 0.79(0.11) | 0.131 |
| Utility value 1-year after surgery [Mean (SD)] | 0.84(0.08) | 0.84(0.07) | 0.84(0.09) | 0.352 |
| Difference of utility values during the 1 year [Mean (SD)] | 0.07(0.07) | 0.08(0.08) | 0.05(0.06) | 0.096 |
| QALYs gained in life-expectancy [Mean (95% CI)] | 0.40(0.31–0.50) | 0.55(0.41–0.72) | 0.18(0.12–0.24) | |
| Mean Costs [CNY(USD)] | 12,992(2,066) | 13,319(2,117) | 12,484(1,985) | |
| Costs 95% CI [CNY(USD)] | 11,984(1,905)−14,088(2,239) | 11,818(1,879)−14,800(2,353) | 11,131(1,769)−13,910(2,211) | |
| Mean ICER [CNY(USD)/QALY] | 33,186(5,276) | 24,536(3,901) | 71,240(11,326) |
*Comparisons were made between age groups of patients in their 70s and 80s using a Mann Whitney U test. A value of P<0.05 was regarded as statistically significant.
RRD, rhegmatogenous retinal detachment; CNY, Chinese Yuan; USD, US dollar; SD, standard deviation; QALY, quality-adjusted life year; CI, confidence interval; ICER, incremental cost-effectiveness ratio.