# Table 3 The empirical powers of the tests at the significance levelÂ 0.05 when the survival times have uniform, exponential, log-normal,uniform and exponential, uniform and log-normal, or exponential and log-normal distributions with unequal medians and sample sizes n1â€‰=â€‰100, n2â€‰=â€‰150, n3â€‰=â€‰150, n4â€‰=â€‰200

Distributions and parameters

Censoring rate

BC

TJ

New

Uniform distribution

â€‚ Î¸â€‰=â€‰(10,10,10.5,10)

â€‚ aâ€‰=â€‰(4,4,4,4)

â€‚ câ€‰=â€‰(2,2,2,2)

0

0.602

0.587

0.594

0.1

0.563

0.606

0.549

0.2

0.537

0.622

0.518

0.3

0.509

0.635

0.490

Exponential distribution

â€‚ Î¸â€‰=â€‰(10,10,10,10)

â€‚ aâ€‰=â€‰(0.1,0.15,0.15,0.1)

0

0.837

0.829

0.833

0.1

0.822

0.831

0.818

0.2

0.799

0.830

0.793

0.3

0.765

0.826

0.756

Log-normal distribution

â€‚ Î¸â€‰=â€‰(10,14,14,10)

â€‚ aâ€‰=â€‰(1,1,1,1)

0

0.804

0.794

0.797

0.1

0.776

0.800

0.769

0.2

0.729

0.787

0.718

0.3

0.696

0.798

0.681

Two uniform andÂ two exponential distributions

â€‚ Î¸â€‰=â€‰(10,13,13-10log(2),10-10log(2))

â€‚ aâ€‰=â€‰(0.1,0.1,0.1,0.1)

â€‚ câ€‰=â€‰(0.01,0.01,0.01,0.01)

0

0.889

0.883

0.884

0.1

0.838

0.875

0.827

0.2

0.817

0.873

0.801

0.3

0.798

0.874

0.779

Two uniformÂ andÂ two log-normal distributions

â€‚ Î¸â€‰=â€‰(10,12,2.5,2.5)

â€‚ aâ€‰=â€‰(1,1,1,1)

â€‚ câ€‰=â€‰(0.2,0.2,0.2,0.2)

0

0.847

0.821

0.845

0.1

0.751

0.813

0.766

0.2

0.695

0.813

0.706

0.3

0.651

0.815

0.644

Two log-normal andÂ two exponential distributions

â€‚ Î¸â€‰=â€‰(log(10),log(13),13-10log(2),10-10log(2))

â€‚ aâ€‰=â€‰(1, 1, 0.1, 0.1)

0

0.799

0.790

0.793

0.1

0.761

0.776

0.752

0.2

0.744

0.788

0.727

0.3

0.718

0.795

0.699