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Table 2 Measurement of variables and other factors

From: Investigating the intention to receive the COVID-19 vaccination in Macao: implications for vaccination strategies

  Mean S/D Frequency Association with Intention to get COVID-19 vaccination
Strongly disagree Disagree Not sure Agree Strongly agree Spearman's rho P
n % n % n % n % n %
Dependent variables   
Intention I intend to have COVID-19 vaccination 3.83 ± 1.41 63 11% 39 7% 106 19% 62 11% 282 51%   
PMT variables and other factors
Severity COVID-19 can be a life-threatening illness 3.82 ± 1.47 78 14% 39 7% 68 12% 82 15% 285 52% 0.120  < 0.05
Susceptibility The risk for me to catch COVID-19 is high 2.49 ± 1.24 146 26% 146 26% 158 29% 48 9% 54 10% 0.148  < 0.001
Maladaptive response rewards
(Cronbach’s alpha 0.701)
If I do not get a COVID-19 vaccination, I will not have to worry about the safety of the vaccine 2.63 ± 1.35 154 28% 102 18% 168 30% 50 9% 78 14% − 0.215  < 0.001
If I do not get a COVID-19 vaccination, I will not have to spend time getting vaccinated 2.04 ± 1.17 252 46% 114 21% 131 24% 24 4% 31 6% − 0.173  < 0.001
If I do not get a COVID-19 vaccination, I will not have to spend money getting vaccinated 1.72 ± 1.10 337 61% 96 17% 78 14% 16 3% 25 5% − 0.610 0.154
Self-efficacy
(Cronbach's alpha = 0.865)
I am confident about my ability to make an informed decision about COVID-19 vaccination 4.12 ± 1.08 19 3% 25 5% 99 18% 133 24% 276 50% 0.468  < 0.001
I have the necessary information to decide whether to vaccinate against COVID-19 vaccination 4.01 ± 1.14 26 5% 32 6% 105 19% 135 24% 254 46% 0.464  < 0.001
I know how to register to get COVID-19 vaccination 4.41 ± 1.02 23 4% 11 2% 47 9% 109 20% 362 66% 0.442  < 0.001
I am able to make arrangement to get COVID-19 vaccination 4.14 ± 1.22 36 7% 31 6% 65 12% 107 19% 313 57% 0.613  < 0.001
Response efficacy
(Cronbach's alpha = 0.921)
Having a COVID-19 vaccination would help reduce the symptoms if ever I contracted the disease 3.68 ± 1.22 47 9% 42 8% 116 21% 180 33% 167 30% 0.357  < 0.001
Having a COVID-19 vaccination would help reduce the severity of symptoms if ever I contracted the disease 3.76 ± 1.17 38 7% 38 7% 118 21% 185 34% 173 31% 0.358  < 0.001
Having a COVID-19 vaccination would help reduce the risk of death if ever I contracted the disease 3.72 ± 1.2 43 8% 42 8% 114 21% 182 33% 171 31% 0.371  < 0.001
Response cost It is likely that I will have serious side-effects that I cannot bear from COVID-19 vaccination 3.07 ± 1.22 71 13% 97 18% 187 34% 116 21% 81 15% − 0.235  < 0.001
Social attitudes
(Cronbach's alpha = 0.870)
Getting COVID-19 vaccination helps to reduce the risk of my family contracting COVID-19 3.88 ± 1.14 27 5% 35 6% 128 23% 152 28% 210 38% 0.511  < 0.001
Getting COVID-19 vaccination helps to prevent the diffusion of COVID-19 in the community 4.09 ± 1.06 20 4% 26 5% 90 16% 166 30% 250 45% 0.510  < 0.001
Social norm
(Cronbach's alpha = 0.725)
I consider getting COVID-19 vaccination a social responsibility 3.99 1.17 28 5% 31 6% 119 22% 114 21% 260 47% 0.655  < 0.001
People I know have already received COVID-19 vaccination 4.16 1.08 18 3% 30 5% 86 16% 127 23% 291 53% 0.319  < 0.001
Most people I know would expect me to get COVID-19 vaccination 3.47 ± 1.28 53 10% 65 12% 164 30% 110 20% 160 29% 0.508  < 0.001
Past experience I have bad experiences with other types of vaccines before 1.71 ± 1.15 361 65% 72 13% 65 12% 28 5% 26 5% − 0.150  < 0.001
Information seeking behaviour
(Cronbach's alpha = 0.673)
I have actively sought information about COVID-19 vaccination 3.48 ± 1.26 50 9% 65 12% 158 29% 128 23% 151 27% 0.379  < 0.001
I rely on the government (such as the Health Bureau) for accurate information about COVID-19 vaccination 3.68 ± 1.27 50 9% 43 8% 132 24% 135 24% 192 35% 0.279  < 0.001
I rely on healthcare professionals (such as doctors, pharmacists, nurses) for accurate information about COVID-19 vaccination 3.19 ± 1.37 88 16% 81 15% 150 27% 104 19% 129 23% 0.287  < 0.001
I rely on online sources (such as internet, social media) for accurate information about COVID-19 vaccination 3.68 ± 1.15 34 6% 40 7% 156 28% 161 29% 161 29% 0.147  < 0.001
I rely on my family and friends for accurate information about COVID-19 and COVID-19 vaccination 2.73 ± 1.27 123 22% 107 19% 179 32% 82 15% 61 11% 0.085  < 0.05
Facilitating factors
(Cronbach's alpha = 0.835)
I might have a stronger intention to take COVID-19 vaccination if people I know have done so 3.42 ± 1.35 74 13% 56 10% 143 26% 122 22% 157 28% 0.376  < 0.001
I might have a stronger intention to take COVID-19 vaccination if that somehow helps to lift travel restrictions 3.91 ± 1.3 49 9% 36 7% 92 17% 115 21% 260 47% 0.423  < 0.001
I might have a stronger intention to take COVID-19 vaccination if there is a rewarding system such as time off from work 3.37 ± 1.49 102 18% 54 10% 121 22% 86 16% 189 34% 0.358  < 0.001
I might have a stronger intention to take COVID-19 vaccination if there is financial incentive 3.07 ± 1.52 135 24% 62 11% 134 24% 68 12% 153 28% 0.265  < 0.001