Table 4.

Factor loadings for development of a 6-factor scale version of the COVID-19 Vaccine Hesitancy Scale (N = 888)

Item	Standardized factor loading
	Efficacy and Safety (EE)	Risk Perceptions (RP)	Conspiracy (C)	Knowledge and information (KI)	Trust (T)	Social norm (SN)
1. I am concerned about the possible side effects of the COVID-19 vaccine	0.569
2. I do not consider vaccination against COVID-19 an effective way to deal with the COVID-19 pandemic	0.446
3. Vaccination against COVID-19 is not required if I have had COVID-19		0.618
4. Vaccination against COVID-19 is not required because I am confident that my immune system will cope with this infection		0.767
5. I do not believe that COVID-19 is a dangerous infection for me		0.593
6. I am concerned that the COVID-19 vaccination is a purely commercial exercise designed to increase the profits of pharmaceutical companies			0.765
7. I am concerned that the developed COVID-19 vaccine contains chips to control my privacy			0.698
8. I have not received sufficient information on the quality and effectiveness of the COVID-19 vaccine				0.781
9. I believe there is not enough scientific and clinical evidence on the effectiveness and safety of the COVID-19 vaccine				0.698
10. In general, I do not consider vaccination to be an effective way to fight infectious diseases.					0.547
11. I refuse vaccinations for religious reasons						0.733
12. I refuse vaccination as the environment in which I grew up (my family, guardians) is against vaccination in general, and in particular against the COVID-19 vaccine						0.777