getKR {pbkrtest} | R Documentation |
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"))
object |
A |
name |
The available slots. If |
Soren Hojsgaard sorenh@math.aau.dk
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., http://www.jstatsoft.org/v59/i09/
data(beets, package='pbkrtest') lg <- lmer(sugpct ~ block + sow + harvest + (1|block:harvest), data=beets, REML=FALSE) sm <- update(lg, .~. - harvest) xx<-KRmodcomp(lg, sm) getKR(xx, "ddf") # get denominator degrees of freedom.