Table 5.
Contrast threshold
| C1 | C2 | C3 | C4 | C5 | C6 | |
|---|---|---|---|---|---|---|
| C1 | 1 | 1 | 1 | 19.9a | 31.9a | |
| 4.3 ± 2.9 | ||||||
| C2 | p = 1 | 1 | 1 | 15.0a | 27.5a | |
| 7.1 ± 3.7 | ||||||
| C3 | p = 1 | p = 1 | 1 | 15.7a | 28.0a | |
| 6.6 ± 4.2 | ||||||
| C4 | p = 1 | p = 1 | p = 1 | 18.9a | 31.0a | |
| 4.7 ± 2.4 | ||||||
| C5 | p < 0.0001a | p < 0.0001a | p < 0.0001a | p < 0.0001a | 2.9 | |
| 18.2 ± 6.8 | ||||||
| C6 | p < 0.0001a | p < 0.0001a | p < 0.0001a | p < 0.0001a | p = 0.15 | |
| 24.2 ± 8.9 |
The values in the first column under the cluster number show the mean ± SD for each cluster. The p values (below the diagonal) were all determined using a multiple comparison of the output of a one-way ANOVA using the Bonferroni method to provide the adjustment to compensate for multiple comparisons. Values above the diagonal are 1 − log(p) indicating the full range of significance values.
aValues reached significance level <0.05.