Table 2. Factors associated with HBsAg positive status among medical students at public health facilities in eastern Ethiopia, 2018 (n = 407).

Variables	Response	HBsAg status		COR [95%CI]	AOR [95%CI]	P-value
		Positive	Negative
Knowledge about UP guideline	yes	25	262	1	1
	no	22	98	2.35 (1.27 4.37)	2.58[1.35 4.93]	0.004
Exposure to body fluids ungloved	Yes	26	145	1.84(1.00 3.39)	1.49[0.73 3.04]	0.27
	No	21	215	1	1
History of needle stick injury	Yes	23	115	2.20(1.19 4.05)	2.11[1.07 4.18]	0.03
	No	24	245	1	1
History of operation/surgery	yes	2	44	0.46 (0.16 1.38)	0.29[0.06 1.33]	0.11
	No	45	316	1	1
History of tooth extraction	Yes	17	93	1.63(0.86 3.09)	1.06[0.51 2.21]	0.90
	No	30	67	1	1
Family history of chronic liver diseases	Yes			2.30(0.72 7.30)	3.15[0.88 11.33]	0.08
	No			1	1
Ever vaccinated for HBV	Yes	15	182	1	1
	No	32	178	2.18 (1.14 4.17)	2.34[1.17 4.69]	0.02