Volume 11, Number 5—May 2005
Research
Avian Influenza Risk Perception, Hong Kong
, Wendy W.T. Lam*, Ella Y.Y. Ho*, Tai Hing Lam*, Anthony J. Hedley*, and Gabriel M. Leung*
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.