Table 5. Exploratory factor analysis of the reasons for receiving the hepatitis B vaccine, questionnaire completed by healthcare workers at the Clinical Centre of Serbia, December 2015 (n=352).

Reasons	Mean score (n = 233)	Factor 1 Social influence	Factor 2 Knowledge of disease	Factor 3 Threat of disease
Recommendation of friend	3.2 ± 2.2	0.770	0.156	0.156
Recommendation of spouse/partner	2.4 ± 1.3	0.836	0.153	0.228
Recommendation of superior/supervisor	4.3 ± 2.2	0.761	0.237	0.153
Behaviour of someone I respect (role model)	3.6 ± 2.4	0.821	0.209	0.104
Recommendation of physician	2.7 ± 1.8	0.636	0.383	0.255
I provide care for hepatitis patients	4.9 ± 2.3	0.431	0.381	0.549
Previous needlestick/sharps injury	5.3 ± 2.6	0.109	-0.079	0.815
Possible restriction from patient care if infected	4.2 ± 2.1	0.229	0.448	0.615
Concern about professional liability	3.7 ± 1.7	0.074	0.436	0.656
Friend/co-worker developed occupational hepatitis	4.4 ± 2.3	0.295	0.425	0.564
Information letter from employer	4.0 ± 1.9	0.397	0.698	0.041
Information obtained from professional sources	5.4 ± 1.8	0.158	0.790	0.087
Information obtained from general media	4.0 ± 2.1	0.468	0.597	0.033

Bold values indicate the highest loading weights.