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Avoid under or overpowered trials. Use sample size re-estimation to explore pre-trial assumptions and adjust the sample size based on your interim results.
In the specify multiple factors tool you can enter one or more values for each of the assumptions required in that table. If you enter multiple values for a particular assumption then each of these will be used in the table above and if this is done for more than one assumption then all combinations of all the values will be included in the main table.
Are events happening as expected?
Events prediction is central to any large trial involving survival analysis. nQuery Predict provides tools to project future events based on both blinded and unblinded designs
This then creates an interactive plot where you can get a deeper understanding of the effect of varying the sample size would have.
Powerful Plotting Features - Plot User Selected Rows
With the plot user selected rows feature, you can visually explore the effect of changing any of your assumptions over a range of values and seeing what effect it would have on any of the solvers in the table.
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