Rationale: The findings of the NLST (National Lung Screening Trial) are the basis for screening high-risk individuals according to age and smoking history. Although screening is covered for eligible Medicare beneficiaries, the generalizability of the NLST in the elderly population has been questioned.

中文翻译：

---

评估国家肺部筛查试验的普遍性：1期疾病患者的比较

理由： NLST（全国肺部筛查试验）的结果是根据年龄和吸烟史筛查高危人群的基础。尽管对合格的Medicare受益人进行了筛查，但人们对NLST在老年人口中的普遍性提出了质疑。