We describe several aspects of the relationship between time-varying markers and the endpoint of interest that are assessed with real examples to illustrate the aforementioned aspects of the longitudinal data provided.
These include the size of the treatment response, the inherent variability associated with the endpoint of interest among normal, untreated males, and the number of replicate animals per treatment group.
In this latter circumstance, there may be only one endpoint of interest in the clinical trial, but several competing endpoint analyses are available (e.g., an analysis of the endpoint that is adjusted for clinical center versus an analysis that is adjusted for geographic region versus an unadjusted analysis).
A new statistical design is proposed that extends traditional prospective cohort study by adding cases with known time of events and including a short-term follow-up to estimate the prospective odds ratio for the clinical endpoint of interest within a reasonably short duration of time.
The primary endpoint of interest was final diagnosis of myocardial infarction.
Often, these genes are considered prognostic in that their respective expressions are associated with the survival endpoint of interest.
Adding query conditions may restrict the search to models of specific type (e.g. regression) or toxicology endpoint of interest (e.g. carcinogenicity).
For validation, usually a meta-analysis is required, which investigates the effects of an intervention on both the surrogate outcome and the patient-relevant endpoint of interest [19],[19].
To properly assess the performance of a QSAR model it is important to know the specific variability of the endpoint of interest, as it will be implicitly transferred into the uncertainty of the QSAR model.
Cancer incidence has been reported twice previously in this cohort (Li et al. 2012; Li et al. 2016) and was therefore treated as a censoring event but not an endpoint of interest; i.e. if cancer occurred before any other disease, the year of diagnosis was the censoring date.
There may be differences in the endpoint of interest amongst individuals which are so large that it may be more appropriate to focus on a sub-group of the test species in order to detect changes caused by the tested stressor.
