Table 3. Mean point estimates, standard errors, coverage (of 95% confidence interval) and heterogeneity test rejection rates for the five combined estimates across six simulation scenarios.
In each case, the true GMTE is fixed at -0.5. Unbiased estimates and associated standard errors/coverage are highlighted in bold.
| Scenario & Assumption(s) violated | Estimator | |||||
|---|---|---|---|---|---|---|
| RGMTE/MR | RGMTE/CAT | MR/CAT | GMTE1/CAT | RGMTE/MR/CAT | ||
| 1. PG3 | Est. | -0.754 | -0.506 | -1.041 | -0.684 | -0.684 |
| S.E | 0.092 | 0.080 | 0.140 | 0.079 | 0.078 | |
| Covge | 0.22 | 0.96 | 0.02 | 0.35 | 0.35 | |
| Qp ≥ 0.05 | 0.00 | 0.94 | 0.00 | 0.70 | 0.00 | |
| 2. NUC | Est. | -0.498 | -0.274 | 0.134 | -0.286 | -0.286 |
| S.E | 0.089 | 0.077 | 0.130 | 0.075 | 0.075 | |
| Covge | 0.96 | 0.15 | 0.01 | 0.16 | 0.16 | |
| Qp ≥ 0.05 | 0.94 | 0.00 | 0.42 | 0.00 | 0.01 | |
| 3. PG1 | Est. | -0.501 | -0.500 | -0.500 | -0.500 | -0.500 |
| S.E | 0.052 | 0.040 | 0.042 | 0.039 | 0.036 | |
| Covge | 0.93 | 0.95 | 0.91 | 0.94 | 0.92 | |
| Qp ≥ 0.05 | 0.95 | 0.95 | 0.98 | 0.96 | 0.96 | |
| 4. PG1 and NUC | Est. | 0.512 | -0.313 | -0.282 | -0.346 | -0.350 |
| S.E | 0.051 | 0.040 | 0.042 | 0.039 | 0.036 | |
| Covge | 0.94 | 0.01 | 0.00 | 0.02 | 0.02 | |
| Qp ≥ 0.05 | 0.94 | 0.04 | 0.07 | 0.00 | 0.01 | |
| 5. PG2 & Hom | Est. | -0.652 | -1.001 | -1.167 | -0.969 | -0.979 |
| S.E | 0.053 | 0.040 | 0.043 | 0.039 | 0.036 | |
| Covge | 0.19 | 0.00 | 0.00 | 0.00 | 0.00 | |
| Qp ≥ 0.05 | 0.05 | 0.00 | 0.01 | 0.00 | 0.00 | |
| 6. All except PG1 | Est. | -0.709 | -0.761 | -1.813 | -0.913 | -0.905 |
| S.E | 0.092 | 0.081 | 0.140 | 0.079 | 0.079 | |
| Covge | 0.37 | 0.11 | 0.00 | 0.00 | 0.00 | |
| Qp ≥ 0.05 | 0.00 | 0.00 | 0.00 | 0.01 | 0.00 | |