Table 1.
Characteristics of included studies
| Study and year published | Country | Study period | Population studied | Total N | Intended to accept N (%) | Administration channel | Evaluation Tool | Type of questions | Response rate % |
|---|---|---|---|---|---|---|---|---|---|
| Gagneux-Brunon 2021 | France | March to July 2020 | HCWs at university hospital and center for COVID-19 diagnosis | 2047 | 1574 (76.9) | On-line and paper-based | Questionnaire developed by Dominique et al25 | Closed | - |
| Kwok 2021 | China | March to April 2020 | Nurses | 1205 | 759 (63.0) | On-line | Questionnaire developed by Betsch et al26 | Likert-type scale | - |
| Papagiannis 2020 | Greece | February 2020 | HCWs in 5 public hospitals | 461 | 200 (43.4) | Personal interviews | Self-designed questionnaire | Likert-type scale | 92.2% |
| Shaw 2021 | US | November to December 2020 | HCWs at an academic medical center | 5277 | 3032 (57.5) | Questionnaire developed by Opel et al27 | Closed | 55% | |
| Shekhar 2021 | US | October to November 2020 | HCWs at 5 major hospital systems | 3479 | 1247 (35.8) | On-line | Self-designed questionnaire | Closed | - |
| Unroe 2021 | US | November 2020 | Nursing home staff | 8243 | 3704 (44.9) | Text message | Self-designed questionnaire | Closed | 33% |
| Verger 2021 | France, Belgium, Canada | October to November 2020 | General practitioners and nurses | 2678 | 1939 (72.4) | On-line and telephone | Self-designed questionnaire | Likert-type scale | - |
| Wang 2020 | China | February to March 2020 | Nurses | 806 | 322 (40.0) | Self-designed questionnaire | Closed | 5.2% | |
| Zhang 2021 | China | September to October 2020 | Hospital staff and CDC's staff | 756 | 209 (27.6) | On-line | Self-designed questionnaire and net promoter score | Likert-type scale | - |
CDC, centers for disease control and prevention; HCW, health care worker; US, United States; -, missing data.