| corGuess {randomizeR} | R Documentation |
Representing the expected number of correct guesses
Description
Represents the expected number of correct guesses of randomization sequences.
Usage
corGuess(type)
Arguments
type |
character string, should be one of |
Details
Selection bias can be an issue in the design of a clinical trial. The
expected number of correct guesses is one measure for selection bias.
The corGuess function is a constructor function
for an S4 object of the class corGuess representing the issue of
correct guesses in a clinical trial. The parameter type takes the
following values:
"CS"refers to "convergence strategy", i.e. the investigator predicts the treatment which has hitherto occurred less often.
"DS"refers to "divergence strategy", i.e. the investigator predicts the treatment which has hitherto occurred more often.
Value
S4 object of class corGuess, a formal representation of the
issue of correct guesses in a clinical trial.
References
D. Blackwell and J.L. Hodges Jr. (1957) Design for the control of selection bias. Annals of Mathematical Statistics, 25, 449-60.
See Also
Other issues:
chronBias,
combineBias(),
imbal,
issue,
selBias,
setPower()