Internal construct validity of the Brazilian version of a tool for assessing the population’s knowledge of human papillomavirus

Fabiana Schuelter Trevisol

Graduate Program in Health Sciences, Universidade do Sul de Santa Catarina - Palhoça (SC), Brazil.

Rodrigo Dias Nunes

Graduate Program in Health Sciences, Universidade do Sul de Santa Catarina - Palhoça (SC), Brazil.

Gabriel Oscar Cremona Parma

Graduate Program in Health Sciences, Universidade do Sul de Santa Catarina - Palhoça (SC), Brazil.

André Luciano Manoel

School of Medicine, Universidade do Sul de Santa Catarina - Tubarão (SC), Brazil.

Clávison Martinelli Zapelini

Graduate Program in Health Sciences, Universidade do Sul de Santa Catarina - Palhoça (SC), Brazil.

Daisson José Trevisol

Graduate Program in Health Sciences, Universidade do Sul de Santa Catarina - Palhoça (SC), Brazil.

Jefferson Traebert

Graduate Program in Health Sciences, Universidade do Sul de Santa Catarina - Palhoça (SC), Brazil.

Corresponding author: Jefferson Traebert. Avenida Pedra Branca, 25, Cidade Universitária, ZIP Code: 88137-270, Palhoça, SC, Brazil. E-mail: jefferson.traebert@gmail.com

Authors’ contribution: Fabiana Schuelter Trevisol: concept and design; data collection; data analysis; writing of the manuscript; approval of the final version. Rodrigo Dias Nunes: data analysis; writing of the manuscript; approval of the final version. Gabriel Oscar Cremona Parma: data analysis; writing of the manuscript; approval of the final version. André Luciano Manoel: concept and design; data collection; data analysis; writing of the manuscript; approval of the final version. Clávison M. Zapelini: concept and design; data collection; data analysis; writing of the manuscript; approval of the final version. Daisson José Trevisol: concept and design; data collection; data analysis; writing of the manuscript; approval of the final version. Jefferson Traebert: data analysis; writing of the manuscript; approval of the final version.

Component	Square summation of the extracted factor loadings			Square summation of rotated factor loadings
Component	Total	Percent variance	Cumulative percent	Total	Percent variance	Cumulative percent
1	4.29	22.57	22.57	2.61	13.76	13.76
2	1.73	9.10	31.67	2.09	10.98	24.74
3	1.50	7.90	39.56	1.88	9.87	34.61
4	1.21	6.40	45.95	1.72	9.05	43.66
5	1.03	5.43	51.38	1.47	7.72	51.38

	Items	Factors
	Items	1	2	3
1a	HPV can cause cervical cancer	0.69
1d	HPV is very rare	0.63
1b	A person could have HPV for many years without knowing it	0.63
1f	HPV always has visible signs or symptoms	0.53
1h	HPV can cause HIV/AIDS	0.51
1n	HPV can be cured with antibiotics	0.31
2a	Girls who had an HPV vaccine do not need a Pap test when they are older		0.74
2f	The HPV vaccine requires three doses		0.66
2d	Someone who had an HPV vaccine cannot develop cervical cancer		0.65
2g	HPV vaccines are most effective if given to people who have never had sex		0.57
2b	HPV vaccines protect against genital warts		0.23
1i	HPV can be transmitted by genital skin-to-skin contact			0.58
3e	When you have an HPV test, you get the results on the same day			0.53
1p	Most sexually active people will get HPV at some point in their lives			0.47
1l	There are many types of HPV			0.43
3c	An HPV test can tell you how long you have had an HPV infection			0.38
1e	HPV can be transmitted during sexual intercourse			0.40
1j	Men cannot get HPV			0.33
1c	Having many sexual partners increases the risk of contracting HPV			0.29

Brasil