Table 5.

Factors associated with risk of positivity for HBsAg

Variable	HbsAg
	Response	Positive	%	Negative	%	OR	95% CI	P value
Local circumcision	Yes	71	15	395	85	1.73	1.17–2.57	0.0075
	No	47	9	453	91
Dental procedure outside health facility	Yes	9	31	20	69	3.4	1.52–7.70	0.0043
	No	109	12	828	88
Uvulectomy	Yes	32	17	156	83	1.65	1.06–2.57	0.0342
	No	86	11	692	89
Local manicure/pedicure	Yes	41	15.5	223	84.5	1.51	1.00–2.28	0.06
	No	73	10.8	600	89.2
Blood transfusion	Yes	15	18.1	68	81.9	1.67	0.92–3.03	0.1263
	No	103	11.7	780	88.3
Work involves blood contact	Yes	8	9.5	76	90.5	0.71	0.33–1.52	0.4757
	No	109	12.9	737	87.1
Delivery at home	Yes	11	8.8	114	91.2	0.66	0.35–1.27	0.2699
	No	107	12.7	734	87.3
Condom use in extra-marital sex	Never or sometimes	50	11.7	376	88.3	0.64	0.32–1.28	0.2835
	Always	12	17.1	58	82.9
Local hair shaving	Yes	36	14.0	222	88.0	1.26	0.82–1.92	0.338
	No	78	11.4	606	88.6
Needle-stick injury	Yes	20	12.0	147	88.0	0.97	0.58–1.63	0.9792
	No	98	12.3	701	87.7
Scar/tattoo	Yes	19	11.2	150	88.8	0.89	0.53–1.50	0.7674
	No	99	12.4	698	87.6
Tribal marks	Yes	30	11.1	240	88.9	0.86	0.56–1.34	0.5869
	No	88	12.6	608	87.4

CI = confidence interval; HBsAg = hepatitis B surface antigen; OR = odds ratio.