Table 3. Association between HBV,HCV and HIV infections and certain influencing variables among Tripoli population.

	HCV			HBsAg			HIV
	OR	95.0% C.I.		OR	95.0% C.I.		OR	95.0% C.I.
		Lower	Upper		Lower	Upper		Lower	Upper
Age group
16–20	0.53	0.34	1.12	1.12	0.67	1.24	0.41	0.29	1.01
21–25	0.70	0.43	1.02	2.89	1.95	3.95	0.60	0.35	0.95
26–30	0.67	0.45	1.02	2.91	2.21	3.9	0.59	0.39	0.91
31–35	1.23	1.02	1.85	3.02	2.12	4.11	1.04	1.01	1.62
36–40	1.56	1.22	2.43	3.55	2.30	4.97	1.37	1.01	2.06
41–45	1.25	1.44	2.87	3.3	2.25	4.88	1.07	1.02	2.08
46–50	2.16	1.15	3.82	3.12	1.95	4.94	2.04	1.01	3.02
>51	2.21	1.01	4.38	5.58	3.23	8.95	2.02	0.94	4.05
Males vs females	0.75	0.63	0.89	1.62	1.46	1.79	1.71	1.68	1.98
Blood transfusion	1.22	1.12	1.87	0	0	0	0	0	0
Intravenous drug use	6.31	2.15	17.15	0	0	0	5.65	1.75	17.06
Surgical exposure	1.21	1.05	1.43	0	0	0	0	0	0
Family HBV	1.12	1.1	1.90	1.65	1.34	2.54	0	0	0
Haemodialysis	3.89	1.81	10.40	0	0	0	0	0	0
Contact with HBV				1.51	1.12	2.13	0	0	0