Table 4 Comparisons of proposed weight, global weight and local weight to estimate the overall hazard ratio in the simulations, heterogeneous design and treatment assignment generated with \(X_{1}\)~\(X_{4}\)
| Â | Â | Â | \(\boldsymbol K\boldsymbol=\mathbf{5}\) | Â | Â | \(\boldsymbol K\boldsymbol=\mathbf{10}\) | Â | Â | \(\boldsymbol K\boldsymbol=\mathbf{20}\) | Â |
|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Global weight | Local weight | Proposed weight | Global weight | Local weight | Proposed weight | Global weight | Local weight | Proposed weight |
\({n}_{k}=500\) | Bias | -0.098 | -0.140 | -0.119 | -0.064 | -0.098 | -0.079 | -0.035 | -0.073 | -0.049 |
| Â | RMSE | 0.287 | 0.254 | 0.239 | 0.208 | 0.226 | 0.188 | 0.171 | 0.178 | 0.139 |
| Â | r-RMSE | 1.200 | 1.062 | 1.000 (Ref) | 1.106 | 1.201 | 1.000 (Ref) | 1.232 | 1.283 | 1.000 (Ref) |
\({n}_{k}=1000\) | Bias | -0.071 | -0.073 | -0.071 | -0.040 | -0.049 | -0.046 | -0.031 | -0.028 | -0.028 |
| Â | RMSE | 0.221 | 0.247 | 0.206 | 0.178 | 0.174 | 0.147 | 0.124 | 0.144 | 0.101 |
| Â | r-RMSE | 1.071 | 1.197 | 1.000 (Ref) | 1.215 | 1.188 | 1.000 (Ref) | 1.231 | 1.430 | 1.000 (Ref) |
\({n}_{k}=2000\) | Bias | -0.040 | -0.031 | -0.038 | -0.034 | -0.017 | -0.025 | -0.033 | -0.019 | -0.019 |
| Â | RMSE | 0.210 | 0.199 | 0.170 | 0.128 | 0.142 | 0.112 | 0.106 | 0.100 | 0.078 |
| Â | r-RMSE | 1.235 | 1.170 | 1.000 (Ref) | 1.142 | 1.267 | 1.000 (Ref) | 1.351 | 1.274 | 1.000 (Ref) |