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

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

Year	N hospitalized^a	N non-hospitalized^a	Rate of hospitalization among infected	Rate of hospitalization in general population	Incidence among non-hospitalized^b	Incidence among hospitalized^b	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

ISSN: 1471-2334