Table 3 Estimated risks (matched Odds Ratio; 95% Confidence Intervals) of H7N9 infection associated with poultry species and densities at the neighborhood level.

From: Estimating Risks of Inapparent Avian Exposure for Human Infection: Avian Influenza Virus A (H7N9) in Zhejiang Province, China

Variable

All population

Gender

Age (years old)

Occupation

 

Male

Female

15–59

≥60

Farmer

Worker

Others

142 cases

93 cases

49 cases

73 cases

66 cases

59 cases

15 cases

68 cases

599 controls

369 controls

190 controls

281 controls

261 controls

235 controls

96 controls

228 controls

Chicken

1.6(1.0,2.9)

2.5(1.1,6.6)

1.1(0.6,2.3)

1.6(1.0,3.6)

1.8(1.0,5.5)

1.7(1.0,4.1)

1.6(0.4,25.5)

2.1(1.0,7.3)

Cluster *

2.6(1.8,3.6)

3.2(2.2,4.9)

1.6(1.1,2.6)

1.8(1.3,2.7)

3.5(2.2,6.0)

22.7(7.6,87.2)

1.7(1.0,3.4)

2.1(1.5,2.9)

Duck

1.0(0.6,1.7)

1.3(0.7,2.9)

0.8(0.5,1.6)

0.9(0.5,1.8)

1.2(0.6,3.4)

1.2(0.6,2.7)

0.9(0.2,10.6)

1.2(0.6,2.8)

Cluster *

2.6(1.9,3.7)

3.4(2.3,5.1)

1.6(1.1,2.6)

1.9(1.3,2.8)

3.7(2.4,6.3)

21.6(7.4,80.8)

1.7(1.0,3.3)

2.2(1.6,3.1)

Goose

2.8(1.2,6.9)

4.4(1.4,16.7)

1.2(0.4,4.3)

1.9(0.7,5.9)

4.3(1.1,21.8)

4.2(1.3,15.1)

0.9(0.1,26.7)

2.1(0.6,9.7)

Cluster *

2.5(1.8,3.5)

3.0(2.1,4.6)

1.6(1.0,2.6)

1.8(1.3,2.7)

3.3(2.1,5.5)

21.1(6.9,81.9)

1.7(1.0,3.4)

2.1(1.5,3.0)

  1. *The local K-function estimates for the spatial clusters of H7N9 cases.