Table 2. Incidence and Factors associated with Incident HBV Infection.

Characteristics	Cases/Person years	Incidence/100 person years	Unadjusted HRs (95% CI)	p-values	Adjusted HRs (95% CI)	p-values
Overall	39/3342	1.17
Gender
Female	30/2381	1.26	Ref		Ref
Male	9/962	0.94	0.74(0.3-1.6)	0.434	0.80(0.4-1.7)	0.573
AGE (years)
40+	6/1239	0.48	Ref		Ref
30-39	22/1649	1.33	2.76(1.1-6.9)	<0.001	2.12(0.9-5.3)	0.080
15-29	11/456	2.42	4.98(1.8-13.9)		3.24(1.2-9.0)
CD4 count*
0-99	1/54	1.87	Ref
100-250	3/213	1.41	0.74(0.1-7.5)	0.955
251-499	12/742	1.62	0.87(0.1-7.0)
500+	12/921	1.30	0.70(0.1-5.6)
HIV Viral load (copies/ml)**
≤400	7/1175	0.60	Ref		Ref
>400	8/200	4.00	6.27(2.3-17.0)	<0.001	6.41(2.2-19.0)	0.001
On ART
No	29/1288	2.25	Ref		Ref
Yes	10/2055	0.49	0.21(0.1-0.4)	<0.001	0.25(0.1-0.5)	<0.001
Sex partners in last 1 year
0	8/812	0.99	Ref
1	25/2091	1.20	1.21(0.5-2.7)	0.836
>=2	6/440	1.36	1.38(0.5-4.1)
Marital status
Never married	5/260	1.93	Ref
Married/Cohabiting	16/1810	0.88	0.46(0.2-1.3)	0.216
Separated/divorced/widowed	18/1273	1.41	0.73(0.3-2.0)
Occupation
Agriculture	22/1679	1.31	Ref
Fishing/Brewer/Motorcycle	2/134	1.50	1.15(0.3-5.2)	0.451
Trader/Formal employment	11/804	1.37	1.06(0.5-2.2)
Unemployed/Home maker	3/220	1.37	1.04(0.3-3.6)
Other	1/508	0.20	0.15(0.0-1.1)

^*377 patients had CD4 results available

^**262 subjects had viral load results, and 287 were on ART

ART=Antiretroviral Therapy