Table 3.
Characteristics of included studies.
| Author | Year | Continent | Country | Survey Sites |
Survey Method | Vaccination Willing (n) |
Sample Size (n) | Quality of Study |
|---|---|---|---|---|---|---|---|---|
| Bagateli et al. [16] | 2021 | South America | Brazil | hospital | offline | 458 | 501 | B |
| Marquez et al. [17] | 2020 | North America | the United States | hospital | offline | 21 | 97 | C |
| Akarsu et al. [18] | 2020 | Asia | Turkey | non-hospital | online | 97 | 232 | C |
| Aldakhil et al. [19] | 2021 | Asia | Saudi Arabia | hospital | offline | 128 | 270 | B |
| Brandstetter et al. [20] | 2020 | Europe | Germany | non-hospital | online | 312 | 612 | B |
| Hetherington et al. [21] | 2020 | North America | Canada | hospital | online | 798 | 1321 | B |
| Montalti et al. [22] | 2021 | Europe | Italy | non-hospital | online | 3017 | 4993 | A |
| Pierantoni et al. [23] | 2020 | Europe | Italy | non-hospital | online | 1651 | 1812 | B |
| Scherer et al. [24] | 2021 | North America | the United States | non-hospital | online | 567 | 1022 | B |
| Teasdale et al. [25] | 2021 | North America | the United States | non-hospital | online | 1024 | 2074 | B |
| Temsah et al. [26] | 2021 | Asia | Saudi Arabia | non-hospital | online | 1507 | 3167 | B |
| Wang et al. [27] | 2020 | Asia | China | non-hospital | offline | 1784 | 3009 | A |
| Yang et al. [28] | 2020 | Asia | China | non-hospital | online | 9122 | 12872 | A |
| Yigit et al. [29] | 2020 | Asia | Turkey | hospital | offline | 243 | 428 | B |
| Yilmaz et al. [30] | 2021 | Asia | Turkey | non-hospital | online | 376 | 1035 | B |
| Zhou et al. [31] | 2020 | Asia | China | hospital | offline | 637 | 747 | A |
| Almusbah et al. [32] | 2021 | Asia | Saudi Arabia | non-hospital | online | 256 | 1000 | B |
| Goldman et al. [33] | 2020 | multi-continent | multi-country | hospital | online | 1006 | 1541 | A |
| Teasdale et al. [34] | 2021 | North America | the United States | non-hospital | online | 693 | 1119 | B |
| Xu et al. [35] | 2020 | Asia | China | non-hospital | online | 3451 | 4748 | A |
| Babicki et al. [36] | 2021 | Europe | Poland | non-hospital | online | 2213 | 4432 | B |
| Wan et al. [37] | 2021 | Asia | China | non-hospital | offline | 406 | 468 | A |
| Altulaihi et al. [38] | 2021 | Asia | Saudi Arabia | hospital | offline | 179 | 333 | B |
| Goldman et al. [39] | 2021 | multi-continent | multi-country | hospital | online | 1736 | 2769 | B |
| A et al. [40] | 2020 | Asia | China | hospital | online | 6723 | 13451 | B |
| Bell et al. [41] | 2020 | Europe | England | non-hospital | online | 1116 | 1252 | A |
| Humble et al. [42] | 2020 | North America | Canada | non-hospital | online | 1074 | 1702 | A |
| Choi et al. [43] | 2021 | Asia | Korea | hospital | offline | 145 | 226 | B |
| Evans et al. [44] | 2021 | Oceania | Australian | non-hospital | online | 525 | 1094 | B |