Robins.CI | R Documentation |
Computes the Robins (1988) confidence interval for the
average treatment effect on a binary outcome in an experiment where
m
of n
individuals are randomized to treatment by design.
Robins.CI(data, level)
data |
observed 2 by 2 table in matrix form where row 1 is the treatment assignment Z=1 and column 1 is the binary outcome Y=1 |
level |
significance level of hypothesis tests, i.e., method yields a 100(1- |
The Robins (1988) confidence interval is similar in form to the well known Wald confidence interval for a difference in proportions, but is guaranteed to have smaller width.
tau.hat |
estimated average treatment effect |
lower |
lower bound of confidence interval |
upper |
upper bound of confidence interval |
Joseph Rigdon jrigdon@wakehealth.edu
Robins, J.M. (1988). Confidence intervals for causal parameters. Statistics in Medicine, 7(7), 773-785.
#Example 1 from Robins (1988)
ex = matrix(c(40,60,15,85),2,2,byrow=TRUE)
Robins.CI(ex,0.05)
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