Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

Volume 13, Number 3—March 2007

Research

Risk for Infection with Highly Pathogenic Influenza A Virus (H5N1) in Chickens, Hong Kong, 2002

Nina Y. Kung*†1Comments to Author , Roger S. Morris*, Nigel R. Perkins*, Les D. Sims‡, Trevor M. Ellis‡, Lucy Bissett‡, Mary Chow‡, Ken F. Shortridge‡, Yi Guan‡, and Malik J.S. Peiris‡
Author affiliations: *Massey University, Palmerston North, New Zealand; †University of Hong Kong, Pokfulam, Hong Kong Special Administrative Region, People’s Republic of China; ‡Department of Agriculture, Fisheries and Conservation, Kowloon, Hong Kong Special Administrative Region, People’s Republic of China;

Main Article

Table 4

Comparison of different multivariate models of risk factors for avian influenza type A virus (H5N1) infection among chicken farms, Hong Kong, 2002**

VariableCategoryOR (95% CI)
Model AModel BModel C
1
Owner lives off farm
37.04 (3.18–431.63)
12.64 (1.18–135.35)
45.84 (3.65–575.69)
2
Sell to retail markets
20.11 (1.47–274.98)
30.26 (2.26–405.09)
28.39 (2.30–350.40)
3
Highest death rate >30 d
17.37 (1.03–292.01)
20.51 (1.51–277.96)
24.28 (1.62–364.87)
4
Wild birds in feed trough
0.07 (0.01–0.85)


5
Chicken count

1.07 (1.01–1.12)

6
Relative in poultry industry


19.41 (1.46–257.74)
Cox and Snell R2
0.42
0.46
0.43
Nagelkerke R2
0.63
0.68
0.65
Significance of Hosmer and Lemeshow test
0.91
0.67
0.82
Degrees of freedom383

*OR, odds ratio; CI, confidence interval.

Main Article

1Current affiliation: AgriQuality Ltd, Lower Hutt, New Zealand

TOP