Table 5.

Distribution and multivariate analysis of risk factors in age groups

Risk factors	Computation	Age groups		95% CI		P value
		≤ 40 yr	> 40 yr	Lower	Upper
Blood transfusion	Count	222	88	2.077	4.467	0.039
	% within age groups	23.8%	20.3%
IVDU	Count	51	0	6.414 × 109	6.414 × 109	0.000
	% within age groups	5.5%	0.0%
Sexual exposure	Count	79	0	9.014 × 109	9.014 × 109	0.000
	% within age groups	8.5%	0.0%
Dental surgery	Count	325	133	2.068	4.209	0.610
	% within age groups	34.9%	30.7%
Road accidents	Count	77	39	1.551	2.090	0.148
	% within age groups	8.3%	9.0%
Barber shops	Count	95	74	1.016	2.363	0.042
	% within age groups	10.2%	17.1%

IVDU: Intravenous drug use.