Volume 9, Number 12—December 2003
Research
Risk Factors for Norovirus, Sapporo-like Virus, and Group A Rotavirus Gastroenteritis
Matty AS de Wit*1, Marion PG Koopmans*, and Yvonne THP van Duynhoven*
Table 2
Risk factors for NV gastroenteritis in persons <1 year to 4 years of age (n = 105 pairs) and persons >5 years of age (n = 46 pairs), univariate and multivariate odds ratiosa,b
| NV gastroenteritis | <1 y to 4 y (n = 105 pairs) | >5 y (n = 46 pairs) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| OR uni |
95% CI |
OR multi |
95% CI |
PAR (%) |
OR uni |
95% CI. |
OR multi |
95% CI |
PAR (%) |
||
| Food-handling hygiene |
1.2 |
0.9 to 1.5 |
1.2 |
0.9 to 1.7 |
46 |
1.3 |
0.9 to 1.9 |
1.3 |
0.8 to 2.2 |
63 |
|
| Household members with gastroenteritis |
27 |
4 |
|||||||||
| Yes |
4.4 |
2.2 to 9.2 |
2.7 |
0.8 to 8.9 |
15.0 |
2.0 to 113.6 |
1.1 |
0.1 to 15.9 |
|||
| No |
1.0 |
- |
1.0 |
- |
1.0 |
- |
1.0 |
- |
|||
| Contact with persons outside household with gastroenteritis |
51 |
60 |
|||||||||
| No |
1.0 |
- |
1.0 |
- |
1.0 |
- |
1.0 |
- |
|||
| Yes |
17.7 |
5.1 to 61.1 |
10.9 |
2.2 to 54.6 |
5.9 |
1.0 to 20.1 |
12.1 |
1.0 to 147.3 |
|||
| Do not know | 2.4 | 1.2 to 4.7 | 2.7 | 0.9 to 7.8 | 0.8 | 0.2 to 3.0 | 1.8 | 0.2 to 15.3 | |||
aUsing logistic regression, and population-attributable risk fractions (PAR).
bNV, norovirus; OR, odds ratio; PAR, population-attributable risk fractions; uni, univariate; multi, multivariate; CI, confidence intervals; -, not applicable.
