Table 4 The empirical type I error rates of the tests at the significance level 0.05 when the survival times have the same uniform, exponential, or log-normal distributions with sample sizes n 1 = 20, n 2 = 25, n 3 = 25, n 4 = 30
Distributions and parameters | Censoring rate | BC | TJ | New |
|---|---|---|---|---|
Uniform distribution   θ = (10,10,10,10)   a = (4,4,4,4)   c = (2,2,2,2) | 0 | 0.071 | 0.051 | 0.054 |
0.1 | 0.080 | 0.073 | 0.053 | |
0.2 | 0.082 | 0.092 | 0.045 | |
0.3 | 0.090 | 0.121 | 0.045 | |
Exponential distribution   θ = (10,10,10,10)   a = (0.1,0.1,0.1,0.1) | 0 | 0.066 | 0.046 | 0.049 |
0.1 | 0.074 | 0.055 | 0.056 | |
0.2 | 0.078 | 0.068 | 0.051 | |
0.3 | 0.084 | 0.087 | 0.050 | |
Log-normal distribution   θ = (log(10), log(10), log(10), log(10))   a = (0.3,0.3,0.3,0.3) | 0 | 0.068 | 0.048 | 0.053 |
0.1 | 0.073 | 0.064 | 0.051 | |
0.2 | 0.081 | 0.085 | 0.052 | |
0.3 | 0.080 | 0.103 | 0.044 |