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Kruskal Wallis test for distribution of open tubules in control, iontophoresis and laser groups.
| Open Tubules | Sum of ranks | Mean of ranks | Mean | KW | p-value |
|---|---|---|---|---|---|
| Control | 903.5 | 45.18 | 20.85 | 19.556 | <0.001* |
| Iontophoresis | 437.5 | 21.88 | 7.75 | ||
| Laser group | 489 | 24.45 | 6.5 |
*significant
