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Mean rank of small/large patches for environmental contamination and direction
| Patch size | Contamination direction | Removal method | Mean rank | Mann-Whitney U | Z | P value |
|---|---|---|---|---|---|---|
| Small patch | Front | IARM | 182.77 | 6,409.5 | −8.11 | <.001 |
| CDC | 118.23 | |||||
| Back | TARM | 148.5 | 10,950 | −2.01 | <.05 | |
| CDC | 152.5 | |||||
| Left | IARM | 164.09 | 9,212 | −5.29 | <.001 | |
| CDC | 136.91 | |||||
| Large patch | Left | IARM | 145.23 | 10,460 | −2.16 | <.05 |
| CDC | 155.77 |
CDC, CDC gown removal procedure; IARM, individual accustomed removal method.
