Extract (or "get") components from a KRmodcomp object.

Extract (or "get") components from a KRmodcomp object, which is the result of the KRmodcomp function.

getKR(
  object,
  name = c("ndf", "ddf", "Fstat", "p.value", "F.scaling", "FstatU", "p.valueU", "aux")
)

getSAT(object, name = c("ndf", "ddf", "Fstat", "p.value"))

Arguments

object

A KRmodcomp object, which is the result of the KRmodcomp function

name

The available slots. If name is missing or NULL then everything is returned.

References

Ulrich Halekoh, Søren Højsgaard (2014)., A Kenward-Roger Approximation and Parametric Bootstrap Methods for Tests in Linear Mixed Models - The R Package pbkrtest., Journal of Statistical Software, 58(10), 1-30., https://www.jstatsoft.org/v59/i09/

Author

Søren Højsgaard sorenh@math.aau.dk

Examples


data(beets, package='pbkrtest')
lg <- lmer(sugpct ~ block + sow + harvest + (1|block:harvest), 
              data=beets, REML=FALSE)
sm <- update(lg, .~. - harvest)
modcomp <- KRmodcomp(lg, sm)
getKR(modcomp, "ddf") # get denominator degrees of freedom.
#> [1] 2