Volume 15, Number 11—November 2009
Research
Hepatitis E Outbreak on Cruise Ship
Table 1
Univariate analysis of probability of having recent acute HEV infection, world cruise ship passengers, 2008, by participant characteristics*
Characteristic | HEV negative | HEV positive | OR | 95% CI | p value |
---|---|---|---|---|---|
Age group, y (n = 526) | |||||
<70 | 283 | 18 | 1.00 | Baseline | |
>70 |
210 |
15 |
1.12 |
0.55–2.28 |
0.749† |
Gender (n = 526) | |||||
M | 224 | 25 | 1.00 | Baseline | |
F |
269 |
8 |
0.31 |
0.14–0.69 |
0.002† |
Past or present alcohol consumption (n = 523) | |||||
No | 49 | 0 | 1.00 | Baseline | 49 |
Yes |
442 |
32 |
5.01 |
0.87–‡ |
0.061§ |
Amount of alcohol consumed (n = 415) | |||||
Below recommended | 349 | 23 | 1.00 | Baseline | |
Above recommended | 37 | 6 | 2.46 | 0.97–6.26 | 0.058† |
*HEV, hepatitis E virus; OR, odds ratio; CI, confidence interval. n values indicate number of responses received in each category.
†χ2 test.
‡No upper limit.
§Fisher exact test.
1Other members of the Hepatitis E Incident Investigation Team: Helen Harris, Rosie Zambra, Richard Tedder, Ariane Halm, John Woodhouse, Annette Wood, Autilia Newton, Deborah Wilson, Erika Duffell, Grainne Nixon, Keith Neal, Susan Bennett, Sultan Salimee, Torbjorn Sundkvist, Sandra Johnson, Debbie Harmer, Ashesh Modi, Valerie Decraene, Alison Smith Palmer, John Cowden, Robert Smith, Meirion Evans, Catherine Mitten, Faustina Montsho-Hammond, Peter Sheridan, and Charles Irish.