Usage
"predict"(object, newdata=NULL, type=c("surv","cumhaz","hazard","density","hr","sdiff", "hdiff","loghazard","link","meansurv","meansurvdiff", "odds","or","margsurv","marghaz","marghr"), grid=FALSE,seqLength=300, se.fit=FALSE,link=NULL,exposed=incrVar(var),var,...) "predict"(object, newdata=NULL, type=c("surv","cumhaz","hazard","density","hr","sdiff", "hdiff","loghazard","link","meansurv","meansurvdiff", "odds","or"), grid=FALSE,seqLength=300, se.fit=FALSE,link=NULL,exposed=incrVar(var),var,...)
Arguments
object
an stpm2 or pstpm2 object
newdata
optional list of new data (required if type in
("hr","sdiff","hdiff","meansurvdiff","or")). For type in
("hr","sdiff","hdiff","meansurvdiff","or"), this defines the unexposed
newdata. This can be combined with grid to get a
regular set of event times (i.e. newdata would not
include the event times).
type
specify the type of prediction:
- "surv"survival probabilities
- "cumhaz"cumulative hazard
- "hazard"hazard
- "density"density
- "hr"hazard ratio
- "sdiff"survival difference
- "hdiff"hazard difference
- "loghazard"log hazards
- "meansurv"mean survival
- "meansurvdiff"mean survival difference
- "odds"odds
- "or"odds ratio
- "margsurv"marginal (population) survival
- "marghaz"marginal (population) hazard
- "marghr"marginal (population) hazard ratio
grid
whether to merge newdata with a regular sequence of event
times (default=FALSE)
seqLength
length of the sequence used when grid=TRUE
se.fit
whether to calculate confidence intervals (default=FALSE)
link
allows a different link for the confidence interval
calculation (default=NULL, such that
switch(type,surv="cloglog",cumhaz="log",hazard="log",hr="log",sdiff="I",
hdiff="I",loghazard="I",link="I",odds="log",or="log",margsurv="cloglog",
marghaz="log",marghr="log"))
exposed
a function that takes newdata and returns a transformed
data-frame for those exposed (defaults to incrementing ``var'')
var
specify the variable name or names for the
exposed/unexposed (names are given as characters)
...
additional arguments (for generic compatibility)