Table 2.

Moving average of incidence rate (95% confidence interval)

Soil radiation, dm (μGy/h)	Influenza			Norovirus
	2006–2007 season	2007–2008 season	2009–2010 season	2006–2007 season	2007–2008 season	2008–2009 season
0 < dm < 0·01	0·53 (0·45–0·61)	0·32 (0·28–0·36)	1·00 (0·78–1·23)	0·82 (0·49–1·15)	0·31 (0·25–0·37)	0·23 (0·14–0·32)
0·01 ⩽ dm < 0·02	0·54 (0·48–0·60)	0·32 (0·29–0·35)	1·00 (0·85–1·15)	0·83 (0·60–1·05)	0·32 (0·27–0·36)	0·24 (0·17–0·30)
0·02 ⩽ dm < 0·03	0·56 (0·49–0·63)	0·34 (0·29–0·39)	1·03 (0·89–1·18)	0·86 (0·67–1·05)	0·34 (0·27–0·41)	0·25 (0·19–0·32)
0·03 ⩽ dm < 0·04	0·59 (0·50–0·68)	0·36 (0·30–0·42)	1·07 (0·92–1·22)	0·90 (0·72–1·07)	0·36 (0·29–0·43)	0·27 (0·21–0·33)
0·04 ⩽ dm < 0·05	0·62 (0·51–0·73)	0·38 (0·31–0·44)	1·12 (0·90–1·33)	0·96 (0·84–1·08)	0·38 (0·32–0·45)	0·29 (0·26–0·33)
0·05 ⩽ dm < 0·06	0·66 (0·57–0·75)	0·38 (0·32–0·44)	1·17 (0·99–1·36)	0·95 (0·84–1·07)	0·39 (0·33–0·45)	0·30 (0·27–0·33)
0·06 ⩽ dm < 0·07	0·69 (0·61–0·77)	0·39 (0·33–0·45)	1·20 (1·03–1·37)	0·99 (0·90–1·08)	0·41 (0·36–0·45)	0·31 (0·28–0·34)
0·07 ⩽ dm < 0·08	0·72 (0·65–0·79)	0·40 (0·34–0·45)	1·24 (1·10–1·38)	1·02 (0·94–1·10)	0·42 (0·37–0·46)	0·32 (0·30–0·34)
0·08 ⩽ dm < 0·09	0·74 (0·69–0·78)	0·41 (0·37–0·45)	1·26 (1·14–1·37)	1·09 (0·98–1·19)	0·45 (0·39–0·50)	0·34 (0·30–0·38)
0·09 ⩽ dm < 0·10	0·77 (0·71–0·83)	0·43 (0·36–0·49)	1·30 (1·16–1·44)	1·15 (0·98–1·31)	0·47 (0·39–0·55)	0·36 (0·30–0·43)
0·10 ⩽ dm < 0·11	0·78 (0·72–0·84)	0·44 (0·36–0·52)	1·33 (1·17–1·48)	1·20 (1·00–1·39)	0·49 (0·39–0·60)	0·37 (0·30–0·43)
0·11 ⩽ dm < 0·12	0·79 (0·72–0·87)	0·45 (0·36–0·53)	1·33 (1·17–1·49)	1·20 (1·02–1·39)	0·50 (0·39–0·60)	0·38 (0·32–0·44)
0·12 ⩽ dm < 0·13	0·79 (0·72–0·87)	0·45 (0·36–0·53)	1·32 (1·16–1·49)	1·18 (0·97–1·40)	0·50 (0·41–0·60)	0·37 (0·31–0·44)
0·13 ⩽ dm < 0·14	0·93 (0·59–1·26)	0·52 (0·35–0·69)	1·54 (1·04–2·05)	1·31 (0·99–1·63)	0·58 (0·41–0·74)	0·41 (0·31–0·51)
0·14 ⩽ dm < 0·15	0·98 (0·65–1·32)	0·54 (0·38–0·71)	1·62 (1·12–2·12)	1·51 (1·01–2·00)	0·69 (0·42–0·97)	0·46 (0·33–0·58)
0·15 ⩽ dm < 0·16	1·03 (0·64–1·42)	0·57 (0·37–0·76)	1·70 (1·14–2·26)	1·54 (0·93–2·15)	0·72 (0·38–1·05)	0·47 (0·31–0·62)