Table 2 The willingness of COVID-19 vaccination among undergraduate students in Vietnam

1

Vaccination is a very effective way to protect me against the COVID-19

5.22

2.24

5.32

2.25

5.25

2.24

0.042

2

I know very well how vaccination protects me from the COVID-19

5.14

2.19

5.28

2.20

5.18

2.20

0.005

3

It is important that I get the COVID-19 jab

5.22

2.23

5.32

2.22

5.25

2.23

0.084

4

Vaccination greatly reduces my risk of catching the COVID-19

5.18

2.23

5.27

2.23

5.20

2.23

0.153

5

I understand how the COVID-19 jab helps my body fight the COVID-19 virus

5.08

2.14

5.22

2.19

5.12

2.16

0.003

6

The COVID-19 jab plays an important role in protecting my life and that of others

5.24

2.24

5.33

2.23

5.27

2.24

0.112

7

The contribution of the COVID-19 jab to my health and well-being is very important

5.17

2.21

5.26

2.23

5.20

2.21

0.035

8

I can choose whether to get a COVID-19 jab or not

4.65

2.17

4.73

2.27

4.67

2.20

0.050

9

Getting the COVID-19 jab has a positive influence on my health

4.97

2.16

5.00

2.25

4.97

2.19

0.116

Total

45.87

18.96

46.72

19.16

46.13

19.03

0.029