PropCIs (version 0.1-6)

wald2ci: Wald interval for difference in proportions and independent samples

Description

Wald interval for difference in proportions and independent samples $p1 - p2$

Usage

wald2ci(x1, n1, x2, n2, conf.level)

Arguments

x1

success counts in sample 1

n1

sample size in sample 1

x2

success counts in sample 2

n2

sample size in sample 2

conf.level

confidence coefficient

Value

• ll
  lower confidence limit
• ul
  upper confidence limit

Details

Add 1 to $x_1$ and $x_2$ and add 2 to $n_1$ and $n_2$ to get Agresti-Caffo adjusted CI (American Statistician, 2000)

References

Agresti, A. 2002. Categorical Data Analysis. Wiley, 2nd Edition.