Exact Unconditional Confidence Interval for Risk Difference

Obtains the exact unconditional confidence interval for risk difference based on the standardized score statistic.

Usage

riskDiffExactCI(
  n1 = NA_integer_,
  y1 = NA_integer_,
  n2 = NA_integer_,
  y2 = NA_integer_,
  cilevel = 0.95
)

Arguments

n1

The sample size for the active treatment group.

y1

The number of responses for the active treatment group.

n2

The sample size for the control group.

y2

The number of responses for the control group.

cilevel

The confidence interval level.

Value

A data frame containing the following variables:

• scale: The scale of treatment effect.

• estimate: The point estimate.

• lower: The lower limit of the confidence interval.

• upper: The upper limit of the confidence interval.

• cilevel: The confidence interval level.

Author

Kaifeng Lu, kaifenglu@gmail.com

Examples

riskDiffExactCI(n1 = 30, y1 = 2, n2 = 30, y2 = 1, cilevel = 0.95)
#>             scale   estimate     lower    upper cilevel
#> 1 risk difference 0.03333333 -0.111153 0.200071    0.95