Table 3. Bivariate analysis of factors related to professional practices and the dependent variable (immunization to HBV) –Brazil, 2019.

Factors related to professional practices	What is the result of the immunization test?				Total		p-value
	Non immunized		Immunized
	n	%	n	%	n	%
Received the vaccine							0.072*
No	6	7.7	3	2.1	9	4.1
Yes	72	92.3	138	97.9	210	95.9
How many doses of the vaccine against hepatitis B did you receive?							0.000
Do not know/ Do not remember	14	18.2	7	5.0	21	9.6
Less than three doses	21	27.3	10	7.2	31	14.2
Three doses or more	42	54.5	122	87.8	164	74.9
Have you ever performed the anti-HBs test?							0.375
No	52	66.7	83	60.6	135	61.6
Yes	26	33.3	54	39.4	80	36.5
If yes, what was the result?							0.053
Negative	13	54.2	14	30.4	27	27
Positive	11	45.8	32	69.6	43	43
Do you wash your hands after each clinical appointment?							0.036
Always	58	74.4	121	85.8	179	81.7
Sometimes	20	25.6	20	14.2	40	18.3
Use of personal protective equipment							0.681
Always	69	88.5	122	86.5	191	87.2
Sometimes	9	11.5	19	13.5	28	12.8
Adherence to the biosafety protocol							0.627
Always	68	87.2	126	89.4	194	88.6
Sometimes	10	12.8	15	10.6	25	11.4
Have you ever had an accident with sharp instruments?							0.725
No	39	50.0	74	52.5	113	51.6
Yes	39	50.0	67	47.5	106	48.4
If yes, how many times?							0.599**
Once	18	46.2	22	32.8	40	37.7
Twice	13	33.3	27	40.3	40	37.7
Three times	5	12.8	11	16.4	16	15.1
Four times	3	7.7	7	10.4	10	9.4
If yes, which instruments?							0.748
Needle (recapping)	25	64.1	45	67.2	70	66.0
Other	14	35.9	22	32.8	36	34.0
If yes, did you follow the protocol?							0.171
No	15	38.5	35	52.2	50	47.2
Yes	24	61.5	32	47.8	56	52.8
Total	78	100.0	141	100.0			-

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