Multivariate analysis of factors that are associated with public health behaviours for SARS prevention in mainland China
| Model 1: dependent variable = wearing masks in mainland China* | Model 2: dependent variable = frequency of washing hands in mainland China† | Model 3: dependent variable = avoid visiting crowded places in mainland China‡ | |||||||
|---|---|---|---|---|---|---|---|---|---|
| ORm | 95% CI | p Value | ORm | 95% CI | p Value | ORm | 95% CI | p Value | |
| ORm, multivariate odds ratio, derived from multiple logistic regression with forward stepwise selection of univariately significant variables listed in table 2; *1 = all/most of the time v occasional and 0 = never; †1 = 10 times or more per day and 0–9 times per day; ‡1 = yes and 0 = no. | |||||||||
| Gender | |||||||||
| Male | 1.0 | ||||||||
| Female | 2.06 | 1.43 to 2.96 | <0.001 | ||||||
| Duration of stay in the travel destination (number of nights) | |||||||||
| Day trip | 1.0 | 1.0 | |||||||
| 1–7 | 0.32 | 0.20 to 0.51 | <0.001 | 1.84 | 1.28 to 2.65 | 0.001 | |||
| >8 | 0.07 | 0.01 to 0.36 | 0.001 | 2.39 | 1.44 to 3.96 | 0.001 | |||
| Travelled to other | |||||||||
| Guangdong cities | |||||||||
| Yes | 1.79 | 1.13 to 2.83 | 0.013 | ||||||
| No | 1.0 | ||||||||
| Frequency of wearing masks in Hong Kong | |||||||||
| Occasional/never | 1.0 | 1.0 | |||||||
| All/most of the time | 7.01 | 3.87 to 12.70 | <0.001 | 1.99 | 1.35 to 2.95 | 0.001 | |||
| Reasons for mask wearing in mainland China | |||||||||
| To protect oneself | 1.0 | ||||||||
| To protect others | 0.38 | 0.18 to 0.80 | 0.012 | ||||||
| Both | 1.18 | 0.75 to 1.86 | 0.464 | ||||||
| Perceived efficacy of wearing masks for prevention of SARS | |||||||||
| Moderate/low/very low | 1.0 | ||||||||
| High/very high | 1.71 | 1.11 to 2.65 | 0.016 | ||||||
| Perceived risk of Hong Kong residents contracting SARS in Shenzhen | |||||||||
| Moderate/low/very low | 1.0 | ||||||||
| High/very high | 2.41 | 1.55 to 3.75 | <0.001 | ||||||
| Perceived fatality caused by SARS | |||||||||
| Moderate/low/very low | 1.0 | ||||||||
| High/very high | 1.59 | 1.02 to 2.46 | 0.039 | ||||||