This function determines the type of matrix structure of Σ_E
and Σ_C, which can be multisample
sphericity (type 1), multisample variance components (type 2), multisample compound
symmetry (type 3) or unstructured variance components (type 4).
matrix giving the covariances between the
m primary endpoints in the experimental (test) group.
SigmaC
matrix giving the covariances between the m primary endpoints in the control group.
display.type
Logical. Should we display the (name of) type of
the matrices.
Value
Integer indicating the structure of the matrices: 1 if both are of type
1, 2 if both are of type 2, 3 if both are of type 3 or 4 if one of them
is of type 4.