| Variables | All respondents | Respondents in 2014 | Respondents in 2020 | P value |
|
| n = 541 | n = 179 | n = 362 |
|
| Hospital category |
|
|
|
|
| General hospital | 435 (80.4%) | 144 (80.4) | 291 (80.4%) | 0.987 |
| Specialized hospital | 106 (19.6%) | 35 (19.6%) | 71 (19.6%) |
|
| Hospital grade* |
|
|
|
|
| Grade 3 class A | 409 (75.6%) | 146 (81.6%) | 263 (72.7%) | 0.023 |
| Below grade 3 class A | 132 (24.4%) | 33 (18.4%) | 99 (27.3%) |
|
| Professional titles* |
|
|
|
|
| Chief physician | 22 (4.1%) | 16 (18.9%) | 6 (1.7%) | 0.010 |
| Associate chief physician | 115 (21.3%) | 41 (22.9%) | 74 (20.4%) |
|
| Attending physician | 188 (34.7%) | 55 (30.7%) | 133 (36.7%) |
|
| Resident physician | 216 (39.9%) | 67 (37.4%) | 149 (41.2%) |
|
| Work experience (years) |
|
|
|
|
| 1 - 5 | 197 (36.4%) | 66 (36.9%) | 131 (36.2%) | 0.305 |
| 6 - 10 | 112 (20.7%) | 35 (19.6%) | 77 (21.3%) |
|
| 11 - 15 | 135 (25.0%) | 31 (17.3%) | 104 (28.7%) |
|
| 16 - 20 | 57 (10.5%) | 29 (16.2%) | 28 (7.7%) |
|
| >20 | 40 (7.4%) | 18 (10.1%) | 22 (6.1%) |
|
| The case of endotracheal tube used per month |
|
|
|
|
| 1 - 25 | 92 (17.0%) | 25 (14%) | 67 (18.5%) | 0.214 |
| 26 - 50 | 221 (40.9%) | 66 (36.9%) | 155 (42.8%) |
|
| 51 - 75 | 97 (17.9%) | 37 (20.7%) | 60 (16.6%) |
|
| 76 - 100 | 95 (17.6%) | 38 (21.2%) | 57 (15.7%) |
|
| >100 | 36 (6.6%) | 13 (7.3%) | 23 (6.4%) |
|