a

Case   (a)
θ2 = -1,θ3 = -2

Case  (b)
(a)θ2 = -1,θ3 = 1

Case  (c)
(a)θ2 = -2,θ3 = 2

0.5

0.529

0.750

0.862

1.0

0.484

0.703

0.828

1.5

0.460

0.662

0.794

2.0

0.444

0.622

0.756

2.5

0.429

0.580

0.712

3.0

0.410

0.536

0.661

Table 2: Asymptotic Relative efficiencies offor Three cases with increasing Values of (). For each case, k = 3 groups m1= m2=m3=20 individuals per group; follow-up times identical for the three groups.