Table 3 Mann–Whitney-U Test.
Stimulus level (cd•s/m2) | 3 | 6 | 12 | 30 | 50 | |||||
|---|---|---|---|---|---|---|---|---|---|---|
peak time | amplitude | peak time | amplitude | peak time | amplitude | peak time | amplitude | peak time | amplitude | |
Mean rank group A | 23.13 | 16.81 | 21.13 | 21.00 | 31.77 | 27.33 | 38.06 | 31.31 | 35.88 | 22.69 |
Mean rank group B | 20.5 | 24.38 | 25.14 | 25.29 | 30.09 | 35.32 | 31.85 | 38.79 | 28.00 | 41.61 |
Mann-Whitney-U-Test | 182 | 133 | 207 | 204 | 436.5 | 341 | 488 | 198.466 | 372 | 198 |
Z | −0.674 | −1.943 | −1.025 | −1.092 | −0.37 | −1.75 | −1.286 | −1.548 | −1.707 | −4.097 |
Asymptotic significance (2-tailed) | 0.500 | 0.052 | 0.305 | 0.275 | 0.71 | 0.08 | 0.199 | 0.122 | 0.088 | <0.001* |
