Psychometric properties and reliability of the Brazilian version of <i>Parent Attitudes about Childhood Vaccine</i> (PACV-BR)

Santos Júnior, Claudio José dos; Silva, Maria Rosa da; Costa, Paulo José Medeiros de Souza

doi:10.1590/1984-0462/2024/42/2023019

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Brasil

Revista Paulista de Pediatria

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Original Article • Rev. paul. pediatr. 42 • 2024 • https://doi.org/10.1590/1984-0462/2024/42/2023019 copy

Psychometric properties and reliability of the Brazilian version of Parent Attitudes about Childhood Vaccine (PACV-BR)

Propriedades psicométricas e confiabilidade da versão brasileira do Parent Attitudes about Childhood Vaccine (PACV-BR)

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Objective:

To evaluate the psychometric properties and reliability of the Brazilian version of the tool Parent Attitudes about Childhood Vaccine (PACV-BR).

Methods:

The sample included 110 parents of children up to two years old served by Family Health Basic Units. The tool's internal consistency and factor validity were respectively assessed by Cronbach's alpha and exploratory factor analysis (EFA). The test-retest reliability was assessed by the intraclass correlation coefficient (ICC).

Results:

The EFA results indicated a proper structural adequacy of the PACV-BR (15 items and two factors). The reliability generated Cronbach's alpha values between 0.715 and 0.854 for the items, of 0.918 for the tool as a whole, of 0.877 for factor 1 and of 0.825 for factor 2, in addition to an ICC of 0.984.

Conclusions:

The PACV-BR showed evidence of construct validity and reliability.

Keywords:
Brazil; Childhood vaccine; Vaccine hesitancy; Validation studies

	Basic unit I	Basic unit II	Basic unit III	Total
Registered children (N)	532	725	410	1,667
Registered children (%)	32	43	25	100
Sample per unit	38	52	30	120

Tool items	F1	F2
Item 3	0.553
Item 4	0.973
Item 5		0.962
Item 6		0.896
Item 7		0.825
Item 8		0.822
Item 9		0.674
Item 10	0.584
Item 11	0.827
Item 12	0.793
Item 13	0.610
Item 14	0.869
Item 15		0.882
Item 16	0.828
Item 17		0.911
Eigenvalue	6.614	2.591
% explained variation	44.092	17.274
% explained variation total	61.367
No. of items	15

Factor/dimension	Item	Cronbach's α*	95% CI
	Item 3	0.847
	Item 4	0.854
	Item 10	0.850
Behaviors	Item 11	0.787
	Item 12	0.803
	Item 13	0.834
	Item 14	0.792
	Item 16	0.801
	Item 5	0.824
	Item 6	0.715
Beliefs	Item 7	0.823
	Item 8	0.830
	Item 9	0.802
	Item 15	0.730
	Item 17	0.745
α_total Factor 1		0.877
α_total Factor 2		0.825
α_total Tool		0.918
Intraclass correlation coefficient		0.984	0.963–0.993

a) Self-reported delayed vaccination
PACV-BR score	Group A – with			Group B – without			t	p-value	MD	MD 95%CI
	n	Mean	SD	n	Mean	SD
	30	34.17	24.99	80	10.48	14.96	4.87	<0.001	23.69	13.84–33.53
b) Self-reported dose missing
PACV-BR score	Group A - with			Group B - without			t	p-value	MD	MD 95%IC
	n	Mean	SD	n	Average	SD
	3	77.67	5.03	107	15.23	18.58	5.78	<0.001	62.43	41.05–83.81

Sociedade de Pediatria de São Paulo R. Maria Figueiredo, 595 - 10o andar, 04002-003 São Paulo - SP - Brasil, Tel./Fax: (11 55) 3284-0308; 3289-9809; 3284-0051 - São Paulo - SP - Brazil
E-mail: rpp@spsp.org.br

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[1] Corresponding author. E-mail: claudiosantos_al@hotmail.com (C. J. Santos Júnior)