Table 2.
Items, response scales, and internal consistency for HBM domains and knowledge scale.
| Intention to Receive Vaccine | |||||
|---|---|---|---|---|---|
| Survey 1 | Survey 2 | ||||
| Domain | Yes Mean (SD) |
Unsure/No Mean (SD) |
Yes Mean (SD) |
Unsure/No Mean (SD) |
p * |
| Perceived Susceptibility (α = 0.67) | |||||
| I do not need to receive the vaccine because I have good health | 0.64 (0.83) | 1.31 (0.81) | 0.31 (0.66) | 1.24 (0.86) | <0.001 |
| I do not need to receive the vaccine if had been infected with COVID-19 and recovered | 0.62 (0.79) | 1.07 (0.80) | 0.38 (0.68) | 0.94 (0.84) | <0.001 |
| Perceived Severity | |||||
| I am not at risk of severe complications of COVID-19 so I will not take the vaccine (Yes/No) | <0.001 | ||||
| Yes | 1603 (54.0) | 294 (30.7) | 1133 (48.8) | 281 (15.2) | |
| No | 1365 (46.0) | 665 (69.3) | 1187 (51.2) | 1573 (84.8) | |
| Perceived Benefit (α = 0.85) | |||||
| I think the COVID-19 vaccine is safe | 1.48 (0.60) | 0.58 (0.56) | 1.70 (0.49) | 0.85 (0.61) | <0.001 |
| I think the COVID-19 vaccine is effective | 1.48 (0.57) | 0.66 (0.55) | 1.64 (0.51) | 0.86 (0.60) | <0.001 |
| Perceived Barrier (α = 0.79) | |||||
| I don’t trust COVID-19 vaccine because it was developed in a short period of time | 0.33 (0.47) | 0.78 (0.42) | 0.15 (0.36) | 0.69 (0.46) | <0.001 |
| I think COVID-19 vaccine would change your DNA | 0.68 (0.66) | 1.16 (0.64) | 0.45 (0.59) | 0.91 (0.67) | <0.001 |
| I am concerned about side effects or risks of the vaccine | 1.11 (0.84) | 1.78 (0.50) | 0.74 (0.78) | 1.70 (0.57) | <0.001 |
| I think the side effects of the COVID-19 vaccine are very serious/could lead to death | 0.72 (0.70) | 1.45 (0.61) | 0.48 (0.59) | 1.24 (0.70) | <0.001 |
| The COVID-19 vaccine will not succeed because the virus keeps changing | 0.90 (0.72) | 1.49 (0.64) | 0.60 (0.64) | 1.22 (0.68) | <0.001 |
| Cues to Action | |||||
| I would be more comfortable getting the vaccine if I saw neighbors, community leaders, religious leaders, doctors, celebrities, politicians receive the vaccine | 1.77 (0.55) | 0.90 (0.80) | 1.82 (0.50) | 1.00 (0.80) | 0.0293 |
| Social Norms | |||||
| Most people I know are going to receive the vaccine | 1.16 (0.76) | 0.54 (0.58) | 1.24 (0.68) | 0.70 (0.63) | 0.006 |
| Knowledge (total score 0–8) | 5.37 (2.12) | 4.47 (2.13) | 7.22 (1.23) | 6.23 (1.81) | <0.001 |
Items scored 0 = disagree, 1 = unsure, 2 = agree. p < 0.01. * Chi-square.