Table 2. Bivariate analysis of knowledge factors and the dependent variable (immunization to hepatitis B), Sao Paulo, Brazil, 2019.

Knowledge factors	What is the result of the immunization test?				Total		p-value
	Non immunized		Immunized
	n	%	n	%	n	%
Received guidance on hepatitis B							0.009*
No	9	11.5	3	2.1	12	5.5
Yes	69	88.5	138	97.9	207	94.5
If yes, where?							0.003
Undergraduation	30	43.5	70	51.5	100	48.3
Graduation	3	4.3	25	18.4	28	13.5
Public Service	12	17.4	18	13.2	30	14.5
Media	24	34.8	23	16.9	47	22.7
Attended any course in the past two years							0.480
No	71	91.0	132	93.6	203	92.7
Yes	7	9.0	9	6.4	16	7.3
Knowledge the etiologic agent							0.000
Incorrect answer	52	66.7	58	41.4	110	50.2
Correct answer	26	33.3	82	58.6	108	49.3
What is the risk of contracting hepatitis B?							0.894**
High	59	78.7	107	75.9	166	75.8
Medium	13	17.3	28	19.9	41	18.7
Low	3	4.0	6	4.3	9	4.1
Modes of transmission of hepatitis B							0.855
Incorrect answer	9	11.5	13	9.2	22	10.0
Correct answer	21	26.9	40	28.4	61	27.9
Incomplete answer	48	61.5	88	62.4	136	62.1
The main preventive measure against hepatitis B in the dental clinic							0.885
Incorrect answer	10	12.8	20	14.2	30	13.7
Correct answer	14	17.9	28	19.9	42	19.2
Incomplete answer	54	69.2	93	66.0	147	67.1
Does the vaccination against hepatitis B last a lifetime?							0.683
No	39	56.5	69	53.5	108	49.3
Yes	30	43.5	60	46.5	90	41.1
Total	78	100.0	141	100.0			-

*Fisher’s exact test; **Maximum likelihood ratio