Skip to Main Content

An official website of the United States government

Government Funding Lapse

Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit  cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at OPM.gov.

Many types of data were collected as part of NLST. The purpose of this section is to explain how each type of data was collected and identify which datasets contain those data.

The bullets to the left are arranged in a loosely chronological order, beginning with questionnaires completed near the start of the trial, through screening, cancer diagnoses and other events of interest, and ending with information about mortality and contamination.