Sociodemographic data of interviewers
| Gender | Woman | 16 (51.6%) |
| Man | 15 (48.4%) | |
| Age | 21–30 | 3 (9.7%) |
| 31–40 | 17 (54.8%) | |
| 41–50 | 11 (35.5%) | |
| Education degree | Junior college | 1 (3.2%) |
| Undergraduate | 16 (51.6%) | |
| Master’s degree | 5 (16.1%) | |
| PhD | 9 (29%) | |
| Profession | Doctor | 13 (41.9%) |
| Nurse | 18 (58.1%) | |
| Place of dispatch | Shandong Province | 18 (58%) |
| Hebei Province | 2 (6.4%) | |
| Anhui Province | 5 (8.3%) | |
| Guangdong Province | 6 (19.4%) | |
| COVID-19 ward start date | January 2020 | 9 (29.0%) |
| February 2020 | 22 (71.0%) |