Table 2. Multivariable analysis of factors associated with possible or confirmed cases*.
| Factor | Odds ratio | 95% CI | p value |
|---|---|---|---|
| Defra employee | |||
| No | 1.00 | ||
| Yes |
2.07 |
0.72–5.94 |
0.17 |
| Working on an infected premise | |||
| No | 1.00 | ||
| Yes |
7.53 |
0.68–83.41 |
0.064 |
| Potential exposure level | |||
| Low | 1.00 | ||
| High |
0.26 |
0.02–2.75 |
0.22 |
| Use of personal protective equipment | |||
| Complete | 1.00 | ||
| Incomplete |
3.26 |
1.22–8.73 |
0.015 |
| Use of oseltamivir relative to first potential exposure | |||
| Before | 1.00 | ||
| On the same day | 2.19 | 0.84–5.71 | 0.27 |
| After | 1.33 | 0.29–6.09 | |
*Based on 96 questionnaires with complete information. CI, confidence interval; Defra, Department for Environment, Food and Rural Affairs.