Table 2.
Sites of contamination during doffing of personal protective equipment
| Small sized contaminated patches (< 1 cm 2), median | Extra large sized contaminated patches (≥ 5 cm2), median | |||||||
|---|---|---|---|---|---|---|---|---|
| Location | PPE1 | PPE2 | PPE3 | p-value | PPE1 | PPE2 | PPE3 | p-value |
| Hair and head | 1.00 | 2.00 | 2.50 | 0.68 | 0.00 | 17.00 | 0.00 | N/A |
| Face | 1.00 | 4.00 | 2.00 | 0.602 | 0.00 | 0.00 | 8.00 | N/A |
| Neck (anterior) | 2.50 | 5.00 | 11.00 | 0.095 | 0.00 | 0.00 | 24.00 | N/A |
| Neck (posterior) | 2.00 | 1.00 | 18.50 | 0.824 | 0.00 | 0.00 | 0.00 | N/A |
| Arms (right) | 3.50 | 1.00 | 4.00 | 0.414 | 0.00 | 0.00 | 28.00 | N/A |
| Arms (left) | 2.00 | 2.00 | 1.00 | 0.909 | 0.00 | 0.00 | 49.00 | N/A |
| Hands or wrists | 1.00 | 1.00 | 6.00 | 0.414 | 8.00 | 61.00 | 0.00 | N/A |
| Working clothes (upper) | 8.50 | 9.00 | 7.00 | 0.997 | 21.00 | 48.50 | 42.00 | 0.690 |
| Working clothes (lower) | 2.00 | 2.50 | 6.00 | 0.111 | 12.00 | 46.00 | 17.50 | 0.276 |
| Clogs | 3.00 | 5.00 | 13.50 | < 0.001* | 121.00 | 55.00 | 133.00 | 0.397 |
| Environment (rubbish bin cover) | 2.00 | 7.00 | 2.50 | 0.254 | 20.00 | 14.00 | 23.00 | 0.737 |
| Environment (chair) | 3.00 | 6.50 | 2.00 | 0.053 | 0.00 | 36.00 | 0.00 | N/A |
| Faucet | 2.00 | 2.00 | 1.50 | 0.659 | 0.00 | 16.00 | 14.00 | N/A |
| Sink | 12.50 | 14.00 | 10.00 | 0.072 | 75.50 | 66.50 | 44.00 | 0.649 |
| Overall | 5.00 | 7.00 | 7.00 | 0.05* | 39.00 | 43.00 | 47.00 | < 0.001* |
*significant p values
N/A: There are fewer than two groups for the dependent variables, so no inferential statistics are computed using ANOVA
PPE1: Hospital Authority Standard Ebola PPE set
PPE2: DuPont™ Tyvek®, Model 1422A
PPE3: Hospital Authority isolation gown for routine patient care and performing aerosol-generating procedures