Table 4. Simulation results of cluster model 3 (15% and 20% of the total cases in each of two clusters slightly apart from each other).
Maximum reported cluster sizes chosen by the Gini coefficient at least once are only shown. Cells most chosen as the optimal maximum size are shaded in gray.
| Maximum reported cluster size | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | Default | |
| Circular shape | |||||||||
| # of OMRCS | 942 | 57 | 0 | 0 | 0 | 1 | 0 | 0 | |
| Sensitivity | 1.00 | 1.00 | - | - | - | 1.00 | - | - | 1.00 |
| PPV | 1.00 | 1.00 | - | - | - | 0.38 | - | - | 0.49 |
| Elliptic shape | |||||||||
| # of OMRCS | 940 | 49 | 0 | 0 | 0 | 11 | 0 | 0 | |
| Sensitivity | 1.00 | 1.00 | - | - | - | 1.00 | - | - | 1.00 |
| PPV | 1.00 | 1.00 | - | - | - | 0.68 | - | - | 0.66 |
# of OMRCS, frequency chosen as the optimal maximum reported cluster size by the Gini coefficient among 1000 random data sets; PPV, positive predictive value.