Power curve over a range of sample sizes or effect sizes

Power curve over a range of sample sizes or effect sizes

Usage

powerCurve(
  delta,
  sd,
  n1 = NULL,
  deltas = NULL,
  sig_level = 0.05,
  ratio = 1,
  sides = 2L
)

Arguments

delta, sd, sig_level, ratio, sides

As in sampleSizeContinuous().

n1

A vector of control-arm sizes to evaluate (vary n at fixed effect), or NULL to vary the effect instead.

deltas

A vector of effect differences to evaluate at fixed n1 (used when n1 is a single value).

Value

A data.frame with columns n1, delta, power.

See also

powerContinuous()

Examples

powerCurve(delta = 5, sd = 10, n1 = seq(20, 120, 10))
#>     n1 delta     power
#> 1   20     5 0.3379390
#> 2   30     5 0.4778965
#> 3   40     5 0.5981469
#> 4   50     5 0.6968934
#> 5   60     5 0.7752659
#> 6   70     5 0.8358223
#> 7   80     5 0.8816025
#> 8   90     5 0.9155872
#> 9  100     5 0.9404272
#> 10 110     5 0.9583410
#> 11 120     5 0.9711088