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Table 3 Risk factors for contracting hepatitis B virus and current HBV infection

From: Prevalence of hepatitis B virus infection among health care workers in a tertiary hospital in Tanzania

Variables Current HBV Infection (HBsAg +) Contracting HBV (Anti HBc+)
  Odds ratio P–value Odds ratio P–value
Gender (Ref = Male)
Female 0.45 [0.24–0.84] 0.0146* 0.89 [0.64–1.24] 0.5044
Age (Ref =16–30)
31–40 0.91 [0.43–1.90] 0.8526 1.43 [0.95–2.16] 0.0939
41–50 0.76 [0.32–1.82] 0.6687 1.75 [1.06–2.88] 0.0304*
51–65 0.43 [0.14–1.33] 0.1574 2.77 [1.69–4.53] <0.0001***
Work duration (Ref = 0–5)     
6–10 1.59 [0.74–3.42] 0.2892 1.45 [0.92–2.28] 0.1286
>11 0.74 [0.35–1.58] 0.4650 2.51 [1.74–3.63] <0.0001***
Profession (Ref = Administration)
Medical Doctors (Surgeons, Physicians, Students) 3.69 [0.81–16.86] 0.0923 1.56 [0.87–2.82] 0.1767
Nursing staff 2.41 [0.54–10.77] 0.3816 1.00 [0.58–1.70] 1
Laboratory personnel 1.29 [0.06–28.71] 1 1.54 [0.40–5.96] 0.7370
Allied Sciences 1.34 [0.12–15.44] 1 0.64 [0.26–1.62] 0.3674
Technical Services 5.15 [0.89–29.87] 0.0667 1.18 [0.50–2.78] 0.8275
Cleaning Staff 2.70 [0.54–13.40] 0.3042 1.52 [0.81–2.84] 0.2057
Risk factors (Ref = Yes)
Blood transfusion 0.44 [0.10–1.88] 0.4156 1.02 [0.59–1.76] 1
Operation 0.97 [0.48–1.99] 1 1.08 [0.75–1.55] 0.7103
i.m./i.v.drug administration 1.47 [0.44–4.90] 0.7883 1.50 [0.86–2.61] 0.1677
Needle stick injury 0.96 [0.50–1.84] 1 1.12 [0.80–1.56] 0.5504