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pmcc computes the conditional product-moment correlation coefficient proposed by Chen et al. (1996).
The conditional product-moment correlation coefficient uses only the uncensored events.
pmcc(trun, obs, a = 0, trans = "linear")left truncation time satisfying trun <= obs.
observed failure time, must be the same length as trun, might be right-censored.
a numeric transformation parameter. The default value is 0, which applies no transformation.
This parameter must be greater than -1.
See ?tranSurvfit for the transformation model structure.
a character string specifying the transformation structure. The following are permitted:
linear transformation structure,
log-linear transformation structure,
exponential transformation structure.
# NOT RUN {
data(channing, package = "boot")
chan <- subset(channing, sex == "Male" & entry < exit & cens == 1)
with(chan, pmcc(entry, exit)) ## cannot handle right censored data
# }
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