Table 4. Exploratory factor analysis of the reasons for not receiving the hepatitis B vaccine, questionnaire completed by healthcare workers at the Clinical Centre of Serbia, December 2015 (n=352).

Reasons	Mean score (n = 109)	Factor 1: Threat of disease	Factor 2: Knowledge of disease	Factor 3: Social influence	Factor 4: Access to care	Factor 5: Risk denial
Concern about possible jaundice due to vaccination	2.9 ± 1.8	0.848	0.041	0.128	0.143	0.040
Concern about possible HIV infection due to vaccination	1.8 ± 1.1	0.672	0.212	0.127	0.320	-0.307
Concern about side effects of vaccine	3.9 ± 2.1	0.873	-0.004	0.148	0.048	0.205
Unconvinced of efficacy of vaccine	3.8 ± 1.9	0.884	-0.020	0.102	-0.023	0.142
Behaviour of someone I respect (role model)	1.7 ± 1.0	0.236	0.213	0.783	0.126	0.094
Have not received letter of invitation to be vaccinated against HBV	3.5 ± 2.2	-0.029	0.085	0.069	0.811	0.166
Insufficient information about the vaccine	2.9 ± 1.3	0.051	0.871	0.096	0.090	0.092
Insufficient information about the disease	2.6 ± 1.4	0.060	0.902	0.116	0.164	-0.104
Unable to afford the vaccine	2.4 ± 1.5	-0.001	0.806	0.113	0.208	0.168
Too busy/never enough time	3.9 ± 1.9	-0.095	0.187	0.055	0.699	0.309
Difficulty in obtaining the vaccine	2.5 ± 1.7	0.124	0.329	0.195	0.742	0.222
Fear of needles/injections	2.0 ± 1.5	0.366	0.063	0.017	0.797	-0.080
Not at increased risk	4.0 ± 2.2	0.320	0.041	-0.109	0.103	0.587
Someone’s (friend, partner, colleague) recommendation	1.4 ± 0.9	0.098	-0.069	0.831	0.069	-0.091
Physician’s recommendation	1.7 ± 1.1	0.076	0.235	0.853	0.025	0.001

Bold values indicate the highest loading weights.