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. 2016 Nov 29;11(11):e0166936. doi: 10.1371/journal.pone.0166936

Table 3. Statistical association of predictor variables with HBV infection, among pregnant women attending ANC clinic at Deder Hospital, Eastern Ethiopia, 2015, (N = 318).

Variables HBsAg Status Crude Odds Ratio (COR (95% CI)) Adjusted Odds Ratio
Positive n (%) Negative n (%) AOR (95% CI) P-value
Age (in year) *
15–19 5(5.7) 83(94.3) 1
20–24 9(8) 103(92) 1.450 (.468–4.494)
25–29 5(7.6) 61(92.4) 1.361 (.377–4.908)
>30 3(5.8) 49(94.2) 1.016 (.233–4.439)
Residence *
Urban 12(8.8) 125(91.2) 1.642(0.688–3.920)
Rural 10(5.5) 171(94.5) 1
Educational Status *
No formal education 7(5.3) 125(94.7) 1
Primary school 8(6.7) 111(93.3) 1.287(0.452–3.663)
Secondary & above 7(10.4) 60(89.6) 2.083(0.699–6.208)
Occupation *
Farmer 6(6.8) 82(93.2) 1
Health worker 3(37.5) 5(62.5) 8.2(1.568–42.870)
Housewife 9(5.3) 161(94.7) 0.764(0.263–2.220)
Daily Laborers 1(7.1) 13(92.9) 1.051(0.117–9.453)
Others 3(7.9) 35(92.1) 1.171(0.277–4.951)
Gravidity *
Primigravida 3(4.1) 70(95.9) 1
Multigravida 19(7.8) 226(92.2) 1.962(0.564–6.825)
Parity *
Nullipara 4(4.8) 79(95.2) 1
Multipara 18(7.7) 217(92.3) 1.638(0.538–4.989)
Home delivery by traditional birth attendant *
Yes 13(8.2) 146(91.8) 1.484(0.616–3.578)
No 9(5.7) 150(94.3) 1
History of abortion
Yes 17(22.7) 58(77.3) 13.952(4.943–39.378) 10.9(2.2–53.9) 0.003
No 5(2.1) 238(97.9) 1 1
Ear Piercing *
Yes 21(7.6) 254(92.4) 1.654(0.373–7.335)
No 1(2.3) 42(97.7) 1
Nose Piercing
Yes 14(63.6) 8(36.4) 30.00(10.042–89.625) 8.9(1.3–59.39) 0.025
No 8(2.7) 288(97.3) 1 1
Tattooing
Yes 11(26.2) 31(73.8) 8.548(3.424–21.339) 2.9(0.59–15.1) 0.185
No 11(4) 265(96) 1 1
Traditional Uvulectomy or/and tonsillectomy
Yes 17(13.1) 113(86.9) 5.506(1.977–15.336) 3.2(0.65–16.16) 0.152
No 5(2.7) 183(97.3) 1 1
History of hospital or HC admission
Yes 17(27) 46(73) 18.478(6.495–52.569) 3.2(0.73–14.45) 0.122
No 5(2) 250(98) 1 1
History of surgical Procedure
Yes 7(46.7) 8(53.3) 16.8(5.376–52.502) 13.3(1.7–103.8) 0.014
No 15(5) 288(95) 1 1
History of tooth extraction
Yes 6(14.6) 35(85.4) 2.796(1.026–7.62) 1.8(0.32–9.72) 0.514
No 16(5.8) 261(94.2) 1 1
History of sexually transmitted infection
Yes 14(36.8) 24(63.2) 19.833(7.566–51.992) 3.2(0.7–14.29) 0.129
No 8(2.9) 272(97.1) 1 1
History of multiple sexual partners
Yes 16(36.4) 28(63.6) 25.524(9.242–70.486) 16.8(3.2–87.9) 0.001
No 6(2.2) 268(97.8) 1 1

1 = reference category,

* = P.Value greater than 0.2 in bivariate analysis,

HC = health center