| N95 respirator type* | |||||
|---|---|---|---|---|---|
| Characteristic | Semi‐rigid cup | Flat‐fold cup | Duckbill |
Three‐panel flat‐fold |
P |
| Number of respondents | 192 | 66 | 262 | 194 | |
| Usability | |||||
| Ease of donning and doffing | 0.31 | ||||
| Easy | 134 (70%) | 48 (73%) | 201 (77%) | 148 (76%) | |
| Somewhat difficult | 51 (27%) | 18 (27%) | 53 (20%) | 42 (22%) | |
| Difficult | 6 (3%) | 0 | 5 (2%) | 2 (1%) | |
| Missing data | 1 (< 1%) | 0 | 3 (1%) | 2 (1%) | |
| Pass fit check | 0.02 | ||||
| Every time | 55 (29%) | 16 (24%) | 96 (37%) | 89 (46%) | |
| Most of the time | 111 (58%) | 45 (68%) | 140 (53%) | 93 (48%) | |
| Sometimes | 18 (9%) | 4 (6%) | 18 (7%) | 7 (4%) | |
| Rarely | 4 (2%) | 1 (2%) | 2 (< 1%) | 2 (1%) | |
| Never | 1 (< 1%) | 0 | 0 | 0 | |
| Missing data | 3 (2%) | 0 | 6 (2%) | 3 (2%) | |
| Seal | < 0.001 | ||||
| Excellent | 28 (15%) | 7 (11%) | 51 (20%) | 54 (28%) | |
| Very good | 57 (30%) | 23 (35%) | 86 (33%) | 76 (39%) | |
| Good | 54 (28%) | 16 (24%) | 78 (30%) | 52 (27%) | |
| Adequate | 42 (22%) | 16 (24%) | 43 (16%) | 10 (5%) | |
| Poor | 10 (5%) | 4 (6%) | 1 (< 1%) | 1 (< 1%) | |
| Missing data | 1 (< 1%) | 0 | 3 (1%) | 1 (< 1%) | |
| Comfort | |||||
| Firmness of fit | < 0.001 | ||||
| Too tight | 99 (52%) | 13 (20%) | 30 (12%) | 7 (4%) | |
| About right | 90 (47%) | 50 (76%) | 224 (86%) | 183 (94%) | |
| Too loose | 3 (2%) | 3 (4%) | 7 (3%) | 2 (1%) | |
| Missing data | 0 | 0 | 1 (< 1%) | 2 (1%) | |
| Breathability | < 0.001 | ||||
| Good | 35 (18%) | 25 (38%) | 138 (53%) | 133 (69%) | |
| Average | 111 (58%) | 39 (59%) | 113 (43%) | 57 (29%) | |
| Poor | 45 (23%) | 2 (3%) | 9 (3%) | 3 (2%) | |
| Missing data | 1 (< 1%) | 0 | 2 (< 1%) | 1 (< 1%) | |
*
Semi‐rigid cup type respirator: cupped particulate respirator and surgical mask 1860 or 1860S (3M); flat‐fold cup type: particulate respirator DE2322 (BYD Care); duckbill type: ProShield (BSN Medical) or Fluidshield surgical masks (Halyard); three‐panel flat‐fold type: Aura 9320A+ particulate respirator (3M).