Table 2.
Simulation results for group variables consisting of continuous and categorical variables.
| n | Weight | P(Δ1, Δ2) | dn | Method | GRC% | IDC% | GS | MS | MSER |
|---|---|---|---|---|---|---|---|---|---|
| 750 | Traditional case-cohort weight | (0.1,–) | 15 | AGB | 25.2 | 9.8 | 4.08 | 8.88 | 2.06 |
| GB | 26.8 | 2.0 | 3.95 | 9.46 | 2.06 | ||||
| SCAD | 10.6 | 8.6 | 4.31 | 9.00 | 2.20 | ||||
| (0.2,–) | 17 | AGB | 67.2 | 51.2 | 3.40 | 6.87 | 1.40 | ||
| GB | 68.2 | 14.2 | 3.38 | 7.82 | 1.71 | ||||
| SCAD | 33.6 | 33.4 | 3.73 | 7.10 | 1.47 | ||||
| Efficient case-cohort weight | (0.1,0.2) | 15 | AGB | 46.0 | 24.0 | 3.69 | 7.75 | 1.65 | |
| GB | 48.8 | 6.0 | 3.61 | 8.52 | 1.76 | ||||
| SCAD | 17.0 | 15.6 | 4.07 | 8.25 | 1.89 | ||||
| (0.2,0.4) | 17 | AGB | 78.2 | 64.4 | 3.26 | 6.55 | 1.31 | ||
| GB | 77.4 | 15.8 | 3.25 | 7.53 | 1.67 | ||||
| SCAD | 43.4 | 42.8 | 3.61 | 6.86 | 1.36 | ||||
| 1500 | Traditional case-cohort weight | (0.1,–) | 17 | AGB | 25.6 | 12.2 | 4.40 | 9.34 | 1.87 |
| GB | 21.2 | 1.4 | 4.36 | 10.18 | 1.91 | ||||
| SCAD | 15.0 | 14.6 | 4.45 | 8.90 | 1.88 | ||||
| (0.2,–) | 19 | AGB | 78.4 | 65.4 | 3.27 | 6.57 | 1.37 | ||
| GB | 72.2 | 15.4 | 3.36 | 7.68 | 1.78 | ||||
| SCAD | 61.8 | 61.4 | 3.43 | 6.61 | 1.34 | ||||
| Efficient case-cohort weight | (0.1,0.2) | 17 | AGB | 46.4 | 28.4 | 3.79 | 7.84 | 1.53 | |
| GB | 46.4 | 5.2 | 3.79 | 8.71 | 1.71 | ||||
| SCAD | 30.0 | 29.4 | 3.98 | 7.76 | 1.53 | ||||
| (0.2,0.4) | 19 | AGB | 84.0 | 74.4 | 3.19 | 6.38 | 1.34 | ||
| GB | 82.8 | 20.8 | 3.21 | 7.41 | 1.91 | ||||
| SCAD | 68.6 | 68.4 | 3.33 | 6.42 | 1.24 | ||||
GRC: group correction; IDC: individual correction; GS: group size; MS: model size; MSER: mean square error ratio; AGB: adaptive group bridge; GB: group bridge; SCAD: smoothly clipped absolute deviation.