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Volume 11, Number 5—May 2005

Research

Avian Influenza Risk Perception, Hong Kong

Richard Fielding*Comments to Author , Wendy W.T. Lam*, Ella Y.Y. Ho*, Tai Hing Lam*, Anthony J. Hedley*, and Gabriel M. Leung*
Author affiliations: *University of Hong Kong, Hong Kong, Special Administrative Region, China

Main Article

Table 2

Live chicken purchases reported by respondents

Purchasing prevalence No. females (%)* No. males (%)* Multiplier† Purchases‡
Female Male
≤1/y 26 (4.4) 18 (4.5) 1 26 18
Few/y 132 (22.4) 99 (25.0) 4 528 396
»1/mo 95 (16.1) 61 (15.4) 12 1,40 732
Few/mo 112 (19.0) 60 (15.1) 24 2,688 1,440
≥1/wk 84 (14.3) 44 (11.1) 52 4,368 2,288
Few/wk 25 (4.2) 18 (4.5) 100 2,500 1,800
Subtotal§ 474 (80.3) 300 (75.8) 11,250 6,674
Rate¶ 23.73 22.25
Never# 116 (19.7) 96 (24.2) 0 0
Total** 590 (100.0) 396 (100.0)
Total average household annual purchase†† 19.07 16.85
Sex-adjusted household purchase rate‡‡ 18.69

*Reported buying frequency by males and females.
†Standardized number of purchases per unit time.
‡Standardized number of live chickens purchased annually (product of the proportionate buying rate [purchasing prevalence x numbers of male and female respondents buying at that rate x multiplier]).
§Total annual number of live chicken purchases reported by male and female respondents (standardized).
¶Annual standardized purchase rate only among respondents reporting household purchase of live chickens (11,250/ 474 [female], 6,674/300 [male]).
#Proportion reporting their household never buys live chickens.
**Total households in sample.
††Total reported household annual purchases (b)/number of women (590) and men (396) buying live chickens (subtotal).
‡‡In households buying live chickens, 14% of male respondents and 65% of female respondents make purchases. We have therefore assumed that the remaining purchases noted by 86% of male respondents within buying households are made by women at the higher female rate. We assumed that of the remaining 35% of female respondent households, 14% of purchases would be by men (at the male rate) and the remainder by women. The resulting figure is the overall sex-proportionately adjusted buying rate and is used as the estimated average household buying rate.

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