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Table 4 Univariable and multivariable logistic regression analysis of the factors associated with specific HBsAg positivity among 499 pregnant women attending ANC’s in Mwanza-rural Tanzania

From: Treponema pallidum infection predicts sexually transmitted viral infections (hepatitis B virus, herpes simplex virus-2, and human immunodeficiency virus) among pregnant women from rural areas of Mwanza region, Tanzania

Characteristics HBsAg IgG
Seropositivity (%)
Univariable P – value Multivariable P – value
*Age 21 [IQR 21–33] 1.06[1.00–1.12] 0.034   
Parity 3 [IQR 1–5] 1.2 [1.08–1.51] 0.003 1.23[1.04–1.46] 0.015
Gestational age 22 [IQR 20–32] 0.99 [0.94–1.03] 0.679   
Number sexual of partners 3 [IQR 1–5] 1.04 [0.96–1.12] 0.304   
Age at first sex 17[IQR:15–20] 1.02[0.97–1.06] 0.319   
Occupation
 Employed (143) 7(4.90) ref    
 Peasant (277) 21(7.58) 1.59[0.66–3.84] 0.299 1.4[0.57–3.42] 0.460
 House wife (79) 1(1.27) 0.24[0.03–2.06] 0.197 0.30[0.03–2.52] 0.269
Education
 Secondary (91) 4 (4.40) ref    
 Primary (319) 19(5.96) 1.37[0.46–4.15] 0.570   
 Never attended (89) 6(6.74) 1.57[0.42–5.77] 0.495   
Marital status
 Married (464) 28(6.03) ref    
 Not married (35) 1(2.86) 2.18[0.29–16.54] 0.450   
History of genital ulcer
 No (452) 27(5.97) ref    
 Yes (47) 2(4.26) 0.70[0.16–3.03] 0.634   
Genital ulcers
 Absent (471) 28(5.94) ref    
 Present (28) 1 (3.57) 0.58 [0.08–4.47] 0.606   
History of STIs
 No (261) 13(4.98) ref    
 Yes (238) 16 (6.72) 1.37 [0.65–2.92] 0.408   
HIV status
 Negative (474) 29(6.12) ref    
 Positive (25) 0 (0.00) Omitted    
Syphilis status
 Negative (479) 28(5.85) ref    
 Positive (20) 1(5) 0.85[0.11–6.56) 0.874   
  1. *Age was not subjected in the multivariable analysis due to its collinearity with parity