Small sample survdiff using permutation reference distributions.
Usage
permlogrank(formula, data, subset, na.action, rho=0, nperm=5000)
Arguments
- nperm
number of permutations for the reference distribution
- formula, data, subset, na.action, rho
see survdiff for details
Details
permlogrank is the permutation version of k-sample survdiff. see
survdiff in survival package for details.
References
Heller G, Venkatraman ES. (1996). Resampling procedures to compare two
survival distributions in the presence of right censored data.
Biometrics 52:1204-1213.