Modeling the Cost-effectiveness of Esophageal Cancer Screening in China
Abstract Background This study aimed to examine the cost-effectiveness of the standard endoscopic screening with Lugol’s iodine staining in EC screening in China. Methods The Markov decision analysis model with eleven states was built. Separate cohorts were conducted consisting of those aged 40 to 69 years, classified as six age groups with five years interval. Three different strategies assumed for each cohort:(1) no screening; (2) endoscopic screening with Lugol’s iodine staining with annual follow-up for Low-grade intraepithelial neoplasia; (3) endoscopic screening with Lugol’s iodine staining without follow-up. Quality-adjusted life-years (QALYs) served as effectiveness. The incremental cost-effectiveness ratio (ICER) was identified as the evaluating indicators. Sensitivity analysis was introduced to assess the robustness of the model. Results For aged 40-49 years, the non-screening strategies were absolutely dominated with both more costs and less QALY, while for aged 50-69 years, the screening scenarios were absolutely dominated. Screening with follow-up was the preferred strategy. Compared to non-screening, screening with follow-up saved USD 10942.57 and USD 611.73 per QALY gained for aged 40-44 and 45-49 years separately. One-way sensitivity analysis addressed that the risk ratio of the EC incidence in population after screening compared to people without screening and the utility of precancerous lesion could affect the cost-effectiveness of the screening strategy. However, the probabilistic sensitivity analysis supported the results of the base case analysis. Conclusions EC screening with follow-up targeting aged 40-49 years was the most cost-effective strategy.