Table 1 Results of the direction tests using each of three matrices for connecting cases
Matrix | Death date | Date found for unknown death dates | ||||
|---|---|---|---|---|---|---|
Average angle | Concentration | P-value | Average angle | Concentration | P-value | |
Relative | 349.41 | 0.0299 | 0.7220 | 347.51 | 0.1406 | 0.0010 |
Adjacent | 331.37 | 0.2187 | 0.2700 | 36.99 | 0.1225 | 0.6060 |
Following | 331.37 | 0.2187 | 0.5320 | 36.99 | 0.1225 | 0.7600 |
Matrix | Eastern outbreak group | Central outbreak group | ||||
|---|---|---|---|---|---|---|
Average angle | Concentration | p-value | Average Angle | Concentration | p-value | |
Relative | 27.6607 | 0.17038 | 0.0020 | 321.31 | 0.3298 | 0.0760 |
Adjacent | 298.542 | 0.0986 | 0.7970 | 194.002 | 0.6656 | 0.0460 |
Following | 298.542 | 0.0986 | 0.9010 | 194.002 | 0.66581 | 0.1890 |