Table 3 Modified Poisson regression model showing predicting factors of COVID-19 vaccine acceptance

Influenza vaccination during COVID-19 pandemic

No (reference)

1

–

–

Yes

1.12

1.06–1.20

0.001

Frequency of medical visits

Routinely (reference)

1

–

–

Once a year

0.89

0.79–0.96

0.004

When needed

0.87

0.82–0.97

0.007

COVID-19 vaccination knowledge levels

Low (reference)

1

–

–

Moderate

1.25

1.09–1.44

0.001

High

1.30

1.32–1.50

 < 0.001

Fear levels of getting infected or re-infected with COVID-19 virus

Low (reference)

1

–

–

Moderate

1.07

0.96–1.19

0.209

High

1.11

1.002–1.227

0.045