Table 1 Statistical analysis and comparison of the results of the three different clean phase protocols
Friedman test (9 groups) | Kendall´s W test | Friedman test (3 clean phase protocols) | Kendall´s W test | Post hoc Wilcoxon signed rank testing | |||||
|---|---|---|---|---|---|---|---|---|---|
Most clean | ↔ (significance) (effect size) | Intermediate clean | ↔ (significance) (effect size) | Most contaminated | |||||
Gloves | p < 0.000 | 0.837 | p < 0.000 | 0.808 | Full | p < 0.000* r = 0.868 | Partial | p < 0.000* r = 0.509 | None |
Table | p < 0.000 | 0.762 | p < 0.000 | 0.661 | Full | p < 0.000* r = 0.815 | None | p = 0.935 | Partial |
Drapes | p < 0.000 | 0.422 | p < 0.000 | 0.360 | Full | p < 0.000* r = 0.786 | Partial | p = 0.093 | None |
Wound | p < 0.000 | 0.810 | p < 0.000 | 0.474 | Full | p < 0.000* r = 0.632 | Partial | p < 0.000* r = 0.502 | None |