The characteristics of DRPIs in medical staff wearing N95 respirator (n=1761)
| Characteristics | N | Prevalence of DRPI | 95% CI for prevalence | P value |
| Wearing condition | <0.001 | |||
| N95+goggles (n, %) | 1395 | 877 (62.9) | 60.33 to 65.40 | |
| N95 by itself (n, %) | 366 | 166 (45.4) | 40.25 to 50.46 | |
| Daily wearing time | <0.001 | |||
| >4 hours | 1574 | 974 (61.9) | 59.48 to 64.28 | |
| ≤4 hours | 187 | 69 (37.4） | 29.98 to 43.81 | |
| Sweating | <0.001 | |||
| Yes | 1096 | 876 (79.9) | 77.56 to 82.30 | |
| No | 665 | 167 (25.1) | 21.82 to 28.41 | |
| Gender | 0.181 | |||
| Male | 290 | 182 (62.8) | 57.19 to 68.32 | |
| Female | 1471 | 861 (58.5) | 56.01 to 61.05 | |
| Age (years) | 0.865 | |||
| <35 | 1196 | 710 (59.4) | 56.58 to 62.15 | |
| ≥35 | 565 | 333 (58.9) | 54.88 to 62.99 | |
| Occupation | 0.752 | |||
| Doctors | 236 | 142 (60.2) | 53.92 to 66.42 | |
| Nurses | 1525 | 901 (59.1) | 56.61 to 61.56 |
DRPI, device-related pressure injury; DWT, daily wearing time; N95, N95 respirator; N95+goggles, N95 respirator in combination with goggles.