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. 2021 Mar 9;23(3):e24673. doi: 10.2196/24673

Table 4.

Factors associated with behavioral intention to receive a COVID-19 vaccination under different scenarios (N=2053).

Factors Conditional on 80% and market rate, AORa,b (95% CI) Conditional on 80% efficacy and free vaccines, AOR (95% CI)
Perceptions relate to COVID-19 vaccination based on the theory of planned behavior

Positive Attitude Scale 1.20 (1.15-1.25)*** 1.24 (1.19-1.30)***

Negative Attitude Scale 0.98 (0.93-1.03) 1.00 (0.94-1.06)

Perceived Subjective Norm Scale 1.43 (1.32-1.55)*** 1.37 (1.25-1.50)***

Perceived behavioral control to receive COVID-19 vaccination 1.51 (1.32-1.73)*** 1.28 (1.09-1.51)**
Influence of social media related to COVID-19 vaccination

Frequency of exposure to positive information related to COVID-19 vaccination on social media 1.53 (1.39-1.70)** 1.52 (1.35-1.71)***

Frequency of exposure to negative information related to COVID-19 vaccination on social media 1.11 (0.99-1.23) 1.07 (0.95-1.21)

Frequency of exposure to testimonials given by participants of the COVID-19 vaccine clinical trials on social media 1.10 (0.99-1.21) 1.00 (0.89-1.11)

Frequency of exposure to negative information about vaccine incidents in China on social media 0.95 (0.86-1.04) 0.93 (0.83-1.05)
Personal COVID-19 preventive measures in the past month

Consistent use of face mask in public places/transportation other than the workplace


No 1.0 1.0


Yes 1.80 (1.42-2.29)*** 1.34 (1.01-1.77)*

Consistent use of face mask when you have close contact with other people in the workplace


No 1.0 1.0


Yes 1.27 (1.02-1.58)* 1.67 (1.24-2.27)**

Self-reported sanitizing hands (using soaps, liquid soaps, or alcohol-based sanitizer) every time after returning from public spaces or touching public installation


No 1.0 1.0


Yes 1.21 (1.00-1.47)* 1.52 (1.19-1.93)**

Self-reported avoiding social gatherings with other people who do not live together


No 1.0 1.0


Yes 1.22 (1.01-1.47)* 1.55 (1.23-1.95)***

Self-reported avoiding crowded places


No 1.0 1.0


Yes 1.24 (1.02-1.51)* 1.73 (1.37-2.18)***
Number of preventive measures implemented by the factory 1.08 (1.04-1.12)*** 1.06 (1.01-1.11)*

aAOR: adjusted odds ratios

bBackground characteristics with P<.05 in univariate two-level logistic regression analysis were adjusted in the multivariate two-level logistic regression models.

*P<.05, **P<.01, ***P<.001.