covariance structure Fit statistics
-2LL AIC BIC
For PR For RR For PR For RR For PR For RR
Compound Symmetry (CS) 43924.2 25530.2 43930.2 25536.2 43940.9 25546.9
Unstructured(UN) 42644.7 24321.3 42652.7 24329.3 42667.0 24343.6
Autoregressive (AR(1)) 43924.2 25530.2 43930.2 25536.2 43940.9 25546.9
Variance component(VC) 42685.3 24351.8 42691.3 24357.8 42702.1 24368.6
Toeplitz (TOEP) 43924.2 25530.2 43930.2 25536.2 43940.9 25546.9
Table 5: Selection of Covariance structure for PR and RR Models.