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Table 2 Number of infected person hospitalized during 1–6 months before onset of symptoms, RR and PAR for this exposure

From: Significant proportion of acute hepatitis B in Poland in 2010–2014 attributed to hospital transmission: combining surveillance and public registries data

Year N hospitalizeda N non-hospitalizeda Rate of hospitalization among infected Rate of hospitalization in general population Incidence among non-hospitalizedb Incidence among hospitalizedb RR 95% CI PAR% 95% CI
2010 39 82 0.32 0.15 0.36 0.93 2.59 1.77–3.80 19.8% 10.0–29.7
2011 34 67 0.34 0.15 0.29 0.81 2.83 1.87–4.27 21.8% 10.9–32.6
2012 31 43 0.42 0.16 0.18 0.70 3.82 2.41–6.06 30.9% 17.6–44.3
2013 32 49 0.40 0.17 0.21 0.69 3.29 2.11–5.13 27.5% 14.7–40.3
2014 30 33 0.48 0.18 0.14 0.60 4.20 2.56–6.88 36.3% 21.3–51.3
2010–2014 166 274 0.38 0.16 0.24 0.74 3.13 2.58–3.80 25.7% 20.3–31.1
Age group           
25–34 24 95 0.21 0.12 0.34 0.62 1.86 1.19–2.91 9.5% 1.12–17.8
35–49 33 69 0.32 0.11 0.20 0.80 3.90 2.58–5.89 23.6% 13.6–33.6
50–64 44 63 0.41 0.16 0.18 0.67 3.65 2.48–5.36 30.0% 18.8–41.0
65+ 65 47 0.58 0.29 0.24 0.82 3.42 2.35–4.97 41.1% 28.2–53.9
Total 166 274 0.38 0.16 0.24 0.74 3.13 2.58–3.80 25.7% 20.3–31.1
  1. a Only in groups unvaccinated in infancy or at age 14
  2. bPer 100,000