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Table 4 Attributable fraction and number of bacillary dysentery incidence to floods between 2005 and 2016

From: Associations between floods and bacillary dysentery cases in main urban areas of Chongqing, China, 2005–2016: a retrospective study

Group

Forward perspective

Backward perspective

AF (%)

AN (n)

AF (%)

AN (n)

Total

0.98(0.63–1.27)

440(279–578)

1.10(0.62–1.50)

497(294–605)

Gender

 Male

1.18(0.75–1.59)

281(171–373)

1.36(0.80–1.92)

324(187–453)

 Female

0.73(0.22–1.20)

159(37–256)

0.79(0.22–1.35)

173(40–296)

Age

 0 ~ 4

1.03(0.14–1.30)

197(18–245)

1.15(0.15–1.46)

220(34–284)

 5 ~ 14

0.83(− 0.71–1.71)

24(− 18–51)

0.94(− 0.60–2.20)

28(− 17–63)

 15 ~ 64

0.98(0.68–1.61)

188(134–312)

1.10(0.75–2.03)

211(140–388)

 65~

0.79(− 0.46–1.5)

33(− 17–61)

0.89(− 0.45–1.83)

37(− 16–79)

Occupation

 Student

0.84(0.50–1.92)

37(25–85)

0.96(0.53–2.63)

42(19–120)

 Farmer

1.00(− 2.34–1.74)

19(− 50–31)

1.15(− 1.92–2.19)

22(− 38–44)

 Worker

0.99(0.09–2.08)

38(5–79)

1.12(0.16–2.69)

43(5–106)

 Child

1.02(0.18–1.28)

206(50–266)

1.14(0.22–1.56)

229(41–313)

 Other

0.93(0.36–1.43)

144(60–227)

1.04(0.43–1.73)

161(62–274)

  1. Note: AF, attributable fraction; AN, attributable number