| Characteristic | All participants | Survey respondents* |
|---|---|---|
| Number of participants | 2161 | 378 |
| Age (years), mean (SD) | 39.0 (11.5) | 38.5 (10.8) |
| Sex | ||
| Men | 532 | 95 |
| Women | 1586 | 277 |
| Other | 6 | 1 |
| Missing data | 37 | 5 |
| Body mass index (kg/m2), mean (SD) | 24.5 (6.7) | 25.4 (7.0) |
| Ethnic background | ||
| European | 279 | 98 |
| Non‐European | 214 | 65 |
| Missing data | 1668 | 215 |
| Professional group | ||
| Medical practitioner | 305 (14.1%) | 64 (17%) |
| Nursing | 1271 (58.8%) | 228 (60.3%) |
| Allied health | 262 (12.1%) | 37 (9.8%) |
| Medical imaging | 29 (1.3%) | 7 (2%) |
| Other health care worker | 159 (7.4%) | 24 (6.3%) |
| Non‐clinical employee | 116 (5.4%) | 13 (3.4%) |
| Pharmacist | 14 (0.7%) | 0 |
| Dental professional | 1 (0.1%) | 1 (0.3%) |
| Missing data | 4 (0.2%) | 4 (1%) |
| Health care experience (years) | ||
| Median (IQR) | 10 (5–19) | 10 (6–20) |
| Range | 0.2–55 | 1–51 |
| Preferred N95 respirator type before participation in the program | ||
| Semi‐rigid cup | 151 (7.0%) | 21 (5.6%) |
| Flat‐fold cup | 171 (7.9%) | 37 (9.8%) |
| Duckbill | 1293 (59.8%) | 249 (65.6%) |
| Three‐panel flat‐fold | 173 (8.0%) | 36 (9.5%) |
| Other | 118 (5.5%) | 18 (4.8%) |
| Missing data | 255 (11.8%) | 17 (4.5%) |
IQR = interquartile range; SD = standard deviation.
*
Completed the usability and comfort assessment survey.