Estimation of Lead Time via Low-Dose CT in the National Lung Screening Trial.

ABSTRACT: Based on recent reports from the National Lung Screening Trial (NLST), smokers who were screened by low-dose computer tomography (LDCT) had a 20% lower chance of dying from lung cancer than those screened by chest X-rays. However, due to the complexities of lead time bias and over diagnosis, no formal test has been shown to reduce lung cancer mortality. To correctly evaluate survival benefit due to early detection, it is critical to estimate lead time, the length of time that detection of a disease is advanced by screening. We applied a recently developed probability method to estimate lead time, using the LDCT data from NLST, where human lifetime was treated as random and derived from the actuarial life table of the US Social Security Administration. Using Bayesian posterior samples of ke

SUBMITTER: Liu R 

PROVIDER: S-EPMC8982711 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature