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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