The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Purpose of this study was to determine the rate of contamination, defined as lung cancer screening in the control arm, of the Dutch–Belgian randomized lung cancer screening trial (NELSON) as contamination adversely affects the power of a trial. The NELSON cohort includes 15,822 high-risk current and former smokers, aged 50–75 years, equally randomized to the screen and control arm. Questionnaires...
Contamination, defined as screening in the control arm, may dilute the statistical power of randomised screening trials. We investigated the rate of contamination in DLCST during 4 years of annual CT screening.DLCST is a randomised trial involving 4104 healthy current and ex smokers. 2052 subjects were randomised to annual low dose chest CT scans (CT group) and 2052 were given no intervention (control...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.