specs.rms | R Documentation |
Prints the design specifications, e.g., number of parameters for each factor, levels of categorical factors, knot locations in splines, pre-transformations, etc.
specs(fit, ...)
## S3 method for class 'rms'
specs(fit, long=FALSE, ...)
## S3 method for class 'specs.rms'
print(x, ...)
fit |
a fit object created with the |
x |
an object returned by |
long |
if |
... |
ignored |
a list containing information about the fit and the predictors as elements
Frank Harrell
Department of Biostatistics, Vanderbilt University
fh@fharrell.com
rms
, rms.trans
, latexrms
, datadist
set.seed(1)
blood.pressure <- rnorm(200, 120, 15)
dd <- datadist(blood.pressure)
options(datadist='dd')
L <- .03*(blood.pressure-120)
sick <- ifelse(runif(200) <= plogis(L), 1, 0)
f <- lrm(sick ~ rcs(blood.pressure,5))
specs(f) # find out where 5 knots are placed
g <- Glm(sick ~ rcs(blood.pressure,5), family=binomial)
specs(g,long=TRUE)
options(datadist=NULL)
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