Table 3. Mann-Whitney U Test.
| i) Ranks | ||||
|---|---|---|---|---|
| Group* | N | Mean Rank | Sum of Ranks | |
| CT.OTO.L | 1 | 10 | 15.50 | 155.00 |
| CT.NON-OTO.L | 2 | 10 | 5.50 | 55.00 |
| Total | 20 | – | – | |
| OTO.ANG | 1 | 10 | 5.50 | 55.00 |
| NON-OTO.ANG | 2 | 10 | 15.50 | 155.00 |
| Total | 20 | – | – | |
| ii) Test Statistics a | ||||
| Test | Distance statistic value for both groups | Angle statistic value for both groups | ||
| Mann-Whitney U | 0.000 | 0.000 | ||
| Wilcoxon W | 55.000 | 55.000 | ||
| Z | -3.790 | -3.782 | ||
| Asymp. Sig. (2-tailed) | 0.000 | 0.000 | ||
| Exact Sig. [2*(1-tailed Sig.)] | 0.000b | 0.000b | ||
| Exact Sig. (2-tailed) | 0.000 | 0.000 | ||
| Exact Sig. (1-tailed) | 0.000 | 0.000 | ||
| Point Probability | 0.000 | 0.000 | ||
Abbreviations: CT. OTO.L, CT otosclerosis length; CT.NON-OTO, CT non-otosclerosis length; OTO.ANG, otosclerosis angle; NON.OTO ANG, non-otosclerosis angle; Asymp., asymptomatic; Sig., signal.
*
Group 1, Otosclerosis; Group 2, Non-otosclerosis.
a
Grouping Variable: group.
b
Not corrected for ties.