Table 2.
K | Σ | β k | Censoring | Main | True | AICA | AICB | Significance | Full |
---|---|---|---|---|---|---|---|---|---|
No interaction | |||||||||
12 | Σ 1 | β eq | Low | 0.066 | 0.069 | 0.072 | 0.066 | 0.067 | 0.069 |
12 | Σ 1 | β v | Low | 0.051 | 0.059 | 0.059 | 0.055 | 0.052 | 0.058 |
12 | Σ 2 | β eq | Low | 0.050 | 0.051 | 0.054 | 0.048 | 0.051 | 0.051 |
12 | Σ 2 | β v | Low | 0.060 | 0.047 | 0.052 | 0.047 | 0.052 | 0.052 |
12 | Σ 3 | β eq | Low | 0.060 | 0.065 | 0.066 | 0.061 | 0.063 | 0.065 |
12 | Σ 3 | β v | Low | 0.063 | 0.066 | 0.067 | 0.060 | 0.067 | 0.065 |
12 | Σ 1 | β eq | High | 0.057 | 0.056 | 0.060 | 0.054 | 0.055 | 0.056 |
12 | Σ 1 | β v | High | 0.038 | 0.040 | 0.037 | 0.034 | 0.040 | 0.044 |
12 | Σ 2 | β eq | High | 0.057 | 0.046 | 0.054 | 0.044 | 0.046 | 0.046 |
12 | Σ 2 | β v | High | 0.060 | 0.047 | 0.058 | 0.049 | 0.055 | 0.055 |
12 | Σ 3 | β eq | High | 0.053 | 0.059 | 0.060 | 0.050 | 0.062 | 0.059 |
12 | Σ 3 | β v | High | 0.057 | 0.056 | 0.064 | 0.055 | 0.061 | 0.065 |
Quantitative interaction | |||||||||
12 | Σ 1 | β eq | Low | 0.122 | 0.137 | 0.143 | 0.121 | 0.123 | 0.137 |
12 | Σ 1 | β v | Low | 0.119 | 0.134 | 0.139 | 0.132 | 0.134 | 0.136 |
12 | Σ 2 | β eq | Low | 0.105 | 0.131 | 0.136 | 0.129 | 0.131 | 0.131 |
12 | Σ 2 | β v | Low | 0.113 | 0.131 | 0.141 | 0.135 | 0.132 | 0.132 |
12 | Σ 3 | β eq | Low | 0.129 | 0.146 | 0.148 | 0.146 | 0.141 | 0.146 |
12 | Σ 3 | β v | Low | 0.121 | 0.121 | 0.127 | 0.120 | 0.116 | 0.120 |
12 | Σ 1 | β eq | High | 0.098 | 0.109 | 0.120 | 0.109 | 0.100 | 0.109 |
12 | Σ 1 | β v | High | 0.108 | 0.112 | 0.118 | 0.111 | 0.108 | 0.111 |
12 | Σ 2 | β eq | High | 0.077 | 0.088 | 0.099 | 0.086 | 0.088 | 0.088 |
12 | Σ 2 | β v | High | 0.104 | 0.095 | 0.106 | 0.096 | 0.093 | 0.093 |
12 | Σ 3 | β eq | High | 0.086 | 0.093 | 0.095 | 0.091 | 0.088 | 0.093 |
12 | Σ 3 | β v | High | 0.095 | 0.101 | 0.107 | 0.098 | 0.100 | 0.101 |
Qualitative interaction | |||||||||
12 | Σ 1 | β eq | Low | 0.625 | 0.685 | 0.673 | 0.662 | 0.644 | 0.685 |
12 | Σ 1 | β v | Low | 0.605 | 0.664 | 0.664 | 0.661 | 0.649 | 0.661 |
12 | Σ 2 | β eq | Low | 0.517 | 0.641 | 0.641 | 0.634 | 0.641 | 0.641 |
12 | Σ 2 | β v | Low | 0.521 | 0.646 | 0.648 | 0.643 | 0.644 | 0.644 |
12 | Σ 3 | β eq | Low | 0.621 | 0.678 | 0.686 | 0.673 | 0.680 | 0.678 |
12 | Σ 3 | β v | Low | 0.583 | 0.661 | 0.664 | 0.652 | 0.661 | 0.658 |
12 | Σ 1 | β eq | High | 0.427 | 0.462 | 0.464 | 0.446 | 0.433 | 0.462 |
12 | Σ 1 | β v | High | 0.424 | 0.438 | 0.447 | 0.432 | 0.440 | 0.443 |
12 | Σ 2 | β eq | High | 0.338 | 0.403 | 0.410 | 0.389 | 0.403 | 0.403 |
12 | Σ 2 | β v | High | 0.359 | 0.431 | 0.429 | 0.413 | 0.433 | 0.433 |
12 | Σ 3 | β eq | High | 0.394 | 0.424 | 0.425 | 0.407 | 0.420 | 0.424 |
12 | Σ 3 | β v | High | 0.418 | 0.466 | 0.471 | 0.456 | 0.465 | 0.449 |
Mean number of prognostic covariates included | |||||||||
β eq | Low | 0 | 12 | 6.8 | 7.3 | 8.7 | 12 | ||
β v | Low | 0 | 8 | 6.4 | 6.9 | 8.7 | 12 | ||
β eq | High | 0 | 12 | 5.1 | 5.7 | 8.0 | 12 | ||
β v | High | 0 | 8 | 5.3 | 5.8 | 8.2 | 12 |
For the scenarios with no true biomarker–treatment interaction, results for methods/strategies with an observed type I error probability above 7% are in italics. For scenarios with a true biomarker–treatment interaction, the observed power is in bold if the type I error probability did not exceed 7%