Results of screening strategies.

1 The number of patient days in isolation.2 The peak isolation capacity required by the hospital in 97.5% of all simulations.3 The number of years required to reach a 50% reduction in the nosocomial prevalence.The cumulative and discounted costs in US$ (2007) and discounted effects for one hospital over 15 years, using base-case assumptions, for a high (15%) as well as a medium (5%) prevalence setting.NA not applicable; aCER average cost-effectiveness ratio in $ per infection averted, compared to no screening; UI uncertainty interval;

1. 隔离患者总日数
2. 97.5%的模拟场景中，医院所需的最高隔离收治容量
3. 医院感染流行率（nosocomial prevalence）降低50%所需的年数
针对感染流行率高（15%）与中等（5%）的两类场景，采用基准情景假设，单家医院在15年周期内的累计折现成本（以2007年美元计价）及折现后健康效益。
NA 表示不适用（not applicable）；aCER 指相较于未开展筛查的方案，每避免1例感染对应的平均成本效益比（单位：美元）；UI 表示不确定区间（uncertainty interval）。