Summary for sample_size_nbinom_result Objects — summary.sample_size_nbinom

Provides a textual summary of the sample size calculation for negative binomial outcomes, similar to the summary for gsNB objects.

Usage

# S3 method for class 'sample_size_nbinom_result'
summary(object, ...)

Arguments

object: An object of class sample_size_nbinom_result.
...: Additional arguments (currently ignored).

Value

A character string summarizing the design (invisibly). The summary is also printed to the console.

Examples

x <- sample_size_nbinom(
  lambda1 = 0.5, lambda2 = 0.3, dispersion = 0.1, power = 0.8,
  accrual_rate = 10, accrual_duration = 20, trial_duration = 24
)
class(x)
#> [1] "sample_size_nbinom_result" "list"                     
summary(x)
#> Fixed sample size design for negative binomial outcome (zhu method), total
#> sample size 38 (n1=19, n2=19), 80 percent power, 2.5 percent (1-sided) Type I
#> error. Control rate 0.5000, treatment rate 0.3000, risk ratio 0.6000,
#> dispersion 0.1000. Accrual duration 20.0, trial duration 24.0, average exposure
#> 14.00. Expected events 212.8. Randomization ratio 1:1.
#>