Abstract:
:An approach is described for predicting the statistical value of extending follow-up in a cohort study. A simple approximation to the expected number of new events of interest is given. The effect of these events on inferences for parameters such as a standardized mortality ratio is approached in two ways. The first concerns the probability of reversing the conclusion of a significance test. The second approach finds the plausible range of values for the standardized mortality ratio after further follow-up that are consistent with the currently available data. Each of these values is displayed together with the precision of the estimate. The methods are illustrated with results from the International Radiation Study of Cervical Cancer (IARC Scientific Publication No. 52, 1984).
journal_name
Am J Epidemioljournal_title
American journal of epidemiologyauthors
Brookmeyer R,Day N,Pompe-Kirn Vdoi
10.1093/oxfordjournals.aje.a114040subject
Has Abstractpub_date
1985-04-01 00:00:00pages
611-9issue
4eissn
0002-9262issn
1476-6256journal_volume
121pub_type
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