reda (version 0.2.1)

confint,rateReg-method: Confidence Intervals for Covariate Coefficients

Description

confint,rateReg-method is a S4 class method for rateReg object, which returns approximate confidence intervals for all or specified covariates.

Usage

"confint"(object, parm, level = 0.95, ...)

Arguments

object

rateReg-class object.

parm

A specification of which parameters are to be given confidence intervals, either a vector of numbers or a vector of names. If missing, all parameters are considered.

level

An optional numeric value to specify the confidence level required. By default, the value is 0.95, which produces 95% confidence intervals.

...

Other arguments for future usage.

Value

A numeric matrix with rownames and colnames.

Details

Under regularity condition (Shao, 2003, Theorem 4.16 and Theorem 4.17, page 287, 290), the approximate confidence intervals are constructed loosely based on Fisher information matrix and estimates of coefficients. See Fu et al. (2014) for details also.

References

Fu, H., Luo, L., & Qu Y. (2014). Hypoglycemic Events Analysis via Recurrent Time-to-Event (HEART) Models. Journal of biopharmaceutical statistics, Epub 2014 Dec 1.

Shao, J. (2003), Mathematical statistics, Springer texts in statistics, New York: Springer, 2nd Edition.

See Also

rateReg for model fitting; coef,rateReg-method for point estimates of covariate coefficients; summary,rateReg-method for summary of a fitted model.

Examples

## See examples given in function rateReg.