Table 3 The PACV-Viet items with Cronbach’s alpha if item deleted and PCA factor loadings

Q3

How sure are you that following the recommended shot schedule is a good idea for your child?

9.1

1.5

0.5

0.59

0.4

Q4

Children get more shots than are good for them

1.7

0.8

-0.4

0.72

-0.3

Q5

I believe that many of the illnesses that shots prevent are severe

1.8

0.7

0.2

0.64

0.3

Q6

It is better for my child to develop immunity by getting sick than to get a shot

3.8

0.9

0.2

0.63

0.2

Q7

It is better for children to get fewer vaccines at the same time

3.0

1.0

0.2

0.64

0.1

Q8

How concerned are you that your child might have a serious side effect from a shot?

3.9

1.1

0.3

0.62

0.2

Q9

How concerned are you that any one of the childhood shots might not be safe?

3.8

1.2

0.4

0.61

0.2

Q10

How concerned are you that a shot might not prevent the disease?

3.6

1.2

0.2

0.63

0.2

Q11

If you had another infant today, would you want him/her to get all the recommended shots?

1.1

0.2

0.2

0.63

0.2

Q12

Overall, how hesitant about childhood shots would you consider yourself to be?

2.0

1.1

0.5

0.59

0.3

Q13

I trust the information I receive about shots

1.7

0.6

0.5

0.58

0.4

Q14

I am able to openly discuss my concerns about shots with my child’s doctor

1.7

0.7

0.4

0.60

0.3

Q15

All things considered, how much do you trust your child’s doctor?

9.0

1.4

0.5

0.58

0.4