Table 1.

Seroprevalence of HBV and sociodemographic characteristics of pregnant women attending antenatal care at the Hawassa University referral hospital from April to May, 2015

Variable	Total	HBV staus of mothers
		Positive	Negative	Crude OR (95% CI)	p-value
Age (yr)
18-20	43 (16.0)	3 (7.0)	40 (93.0)	1.00 (reference)
21-25	84 (31.2)	6 (7.1)	78 (92.9)	1.03 (0.24, 4.32)	0.97
26-30	106 (39.4)	9 (8.5)	97 (91.5)	1.24 (0.32, 4.81)	0.76
31-39	36 (13.4)	3 (8.3)	33 (91.7)	1.21 (0.23, 6.41)	0.82
Residence
Urban	226 (84.0)	16 (7.1)	210 (92.9)	1.00 (reference)
Rural	43 (16.0)	5 (11.6)	38 (88.4)	1.73 (0.60, 4.99)	0.31
Educational status
No formal education	31 (11.5)	6 (19.4)	25 (80.6)	3.68 (1.27, 10.68)	0.02
Primary	42 (15.6)	3 (7.1)	39 (92.9)	1.18 (0.32, 4.38)	0.80
Secondary or above	196 (72.8)	12 (6.1)	184 (93.9)	1.00 (reference)
Occupation
Employed	99 (36.8)	4 (4.0)	95 (96.0)	1.00 (reference)
Housewife	106 (39.4)	10 (9.4)	96 (90.6)	2.47 (0.75, 8.16)	0.14
Daily laborer	6 (2.2)	1 (16.7)	5 (83.3)	4.75 (0.44, 50.74)	0.20
Merchant	38 (14.1)	3 (7.9)	35 (92.1)	2.04 (0.43, 9.56)	0.37
Student	20 (7.4)	3 (15.4)	17 (85.0)	4.19 (0.86, 20.42)	0.08
Gestational age
1st trimester	87 (32.3)	10 (11.5)	77 (88.5)	2.52 (0.83, 7.68)	0.10
2nd trimester	80 (29.7)	6 (7.5)	74 (92.5)	1.57 (0.46, 5.35)	0.47
3rd trimester	102 (37.9)	5 (4.9)	97 (95.1)	1.00 (reference)
Previous place of delivery
No birth	109 (40.5)	6 (5.5)	103 (94.5)	1.00 (reference)
Home	47 (17.5)	6 (12.8)	41 (87.2)	2.51 (0.77, 8.24)	0.13
Health institution	113 (42.0)	9 (8.0)	104 (92.0)	1.49 (0.51, 4.32)	0.47

Values are presented as number (%).

HBV, hepatitis B virus; OR, odds ratio; CI, confidence interval.