Time {drm} | R Documentation |
This is a special function used in the drm
or depratio
syntax. It identifies the ordering in correlated groups of observations,
and is used on the right hand side of a formula.
Time(x)
x |
A factor, or numeric variable. |
The function's only action is semantic, to mark a variable as the Time indicator.
formula(wheeze~cluster(id)+Time(age))