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The results of statistical analysis concerning reported values of VNRS.
| Group | Examination | ||
|---|---|---|---|
| I | II | II | |
| Study group | |||
| ± s | 5.589 ± 1.304 | 2.054 ± 1.095 | 0.410 ± 0.626 |
| Min-max | 3–8 | 0–4 | 0–2 |
| Median | 5 | 2 | 0 |
| Control group | |||
| ± s | 5.436 ± 1.548 | 2.571 ± 1.188 | 1.303 ± 1.007 |
| Min-max | 2–9 | 0–5 | 0–4 |
| Median | 5 | 3 | 1 |
| Mann–Whitney U test, p ≤ 0.005 | p=0.5015 | p=0.00048 | p=0.00040 |
