Table 1. Descriptive Statistics .
| n | % | |
| Background Factors | ||
| Gender | ||
| kFemale | 310 | 68.9 |
| Male | 140 | 31.1 |
| Age groups | ||
| 18-35 | 63 | 14.0 |
| 36-65 | 243 | 54.0 |
| >65 | 144 | 32.0 |
| Educational level | ||
| <College | 311 | 69.1 |
| ≥College | 138 | 30.7 |
| Missing data | 1 | 0.2 |
| Current marital status | ||
| Married | 316 | 70.2 |
| Single | 92 | 20.4 |
| Else | 42 | 9.3 |
| Having children under 18 | ||
| No | 397 | 88.2 |
| Yes | 53 | 11.8 |
| Employment status | ||
| Full-time | 154 | 34.2 |
| Retired | 137 | 30.4 |
| Housewives | 116 | 25.8 |
| Else | 43 | 9.6 |
| Chronic diseases status | ||
| No | 302 | 67.1 |
| Yes | 147 | 32.7 |
| Don’t know | 1 | 0.2 |
| External Factors of BICV | ||
| Overall trust toward the government | ||
| Very strong mistrust | 54 | 12.0 |
| Mistrust | 78 | 17.3 |
| Neutral | 128 | 28.4 |
| Trust | 172 | 38.2 |
| Very strong trust | 9 | 2.0 |
| Don’t know | 9 | 2.0 |
| Trust toward governmental measures for controlling COVID-19 | ||
| Very strong mistrust | 37 | 8.2 |
| Mistrust | 92 | 20.4 |
| Neutral | 153 | 34.0 |
| Trust | 153 | 34.0 |
| Very strong trust | 15 | 3.3 |
| Overall satisfaction toward the government | ||
| Very strong dissatisfaction | 53 | 11.8 |
| Dissatisfaction | 79 | 17.6 |
| Neutral | 151 | 33.6 |
| Satisfaction | 152 | 33.8 |
| Very strong satisfaction | 8 | 1.8 |
| Don’t know | 7 | 1.6 |
| Frequency of exposure to positive social media messages about COVID-19 vaccines | ||
| Extremely infrequent | 43 | 9.6 |
| Quite infrequent | 90 | 20.0 |
| Average | 214 | 47.6 |
| Quite frequent | 101 | 22.4 |
| Extremely frequent | 1 | 0.2 |
| Don’t know | 1 | 0.2 |
| Attitude About Timing of COVID-19 Vaccination | ||
| At the soonest | 59 | 13.1 |
| Wait for clarification about the vaccines’ effectiveness and safety | 307 | 68.2 |
| At late as possible | 46 | 10.2 |
| Try not to | 18 | 4.0 |
| Definitely not | 20 | 4.4 |
| Perceptions About Availability of Free Vaccination | ||
| Whether the government should provide free vaccination to every permanent resident | ||
| No | 15 | 3.3 |
| Yes | 435 | 96.7 |
| Perceived chance that the government would provide free vaccination in the coming year | ||
| Definitely not | 13 | 2.9 |
| Probably not | 37 | 8.2 |
| Half-half | 152 | 33.8 |
| Probably yes | 185 | 41.1 |
| Definitely yes | 57 | 12.7 |
| Don’t know | 6 | 1.3 |
| Perceived chance of inequity regarding free COVID-19 vaccination | ||
| Definitely not | 66 | 14.7 |
| Probably not | 80 | 17.8 |
| Half-half | 114 | 25.3 |
| Probably yes | 95 | 21.1 |
| Definitely yes | 51 | 11.3 |
| Don’t know | 44 | 9.8 |
| The maximum amount of cost that participants were willing to pay (HKD) | ||
| ≤100 | 83 | 18.4 |
| 101-300 | 190 | 42.2 |
| >300 | 126 | 27.9 |
| Don’t know | 51 | 11.3 |
| Internal Factors of BICV | ||
| Perceived effectiveness of COVID-19 vaccines on controlling COVID-19 in Hong Kong | ||
| Very low | 5 | 1.1 |
| Quite low | 35 | 7.8 |
| Average | 168 | 37.3 |
| Quite strong | 213 | 47.3 |
| Very strong | 22 | 4.9 |
| Don’t know | 7 | 1.6 |
| Perceived duration of protectiveness of the COVID-19 vaccine (year) | ||
| <1 | 141 | 31.3 |
| ≥1 | 141 | 31.3 |
| Don’t know | 168 | 37.3 |
| Perceived risk | ||
| Very low | 36 | 8.0 |
| Quite low | 221 | 49.1 |
| Moderate | 143 | 31.8 |
| Quite high | 45 | 10.0 |
| Very high | 5 | 1.1 |
| Influenza vaccination in the past 12 months | ||
| No | 334 | 74.2 |
| Yes | 115 | 25.6 |
| Don’t know | 1 | 0.2 |
Abbreviations: COVID-19, coronavirus disease 2019; BICV: Behavioral intention for likely/definitely taking up COVID-19 vaccination during the first 6 months since its availability to the general public in Hong Kong.