crit_1_of_3: Critical value at first interim analysis
In dominicmagirr/gsdelayed: Design a group-sequential trial when anticipating a delayed effect.

crit_1_of_3

R Documentation

Critical value at first interim analysis

Find the critical value at the first interim analysis of a three-stage design

crit_1_of_3(info_frac_sf, alpha_spend_f = ldobf,
  alpha_one_sided = 0.025)

`info_frac_sf`	Information fraction to be used in the spending function at the first interim.
`alpha_spend_f`	The alpha-spending function. Default is the Lan-DeMets O'Brien-Fleming function.
`alpha_one_sided`	One-sided alpha level.

The critical value for the first interim z-statistic.

dominicmagirr/gsdelayed documentation built on May 15, 2024, 8:24 a.m.

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