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 3
Risk factors for SLV gastroenteritis, prevalence in cases and controls (48 pairs), univariate and multivariate odds ratios using logistic regression and PARa
| SLV gastroenteritis | Cases | Controls | OR uni | 95% CI | OR multi | 95% CI | PAR (%) | |
|---|---|---|---|---|---|---|---|---|
| N (%) |
N (%) |
|||||||
| Household member with gastroenteritisb |
19 (39.6) |
10 (21.3) |
2.8 |
1.0 to 7.8 |
n.i. |
|||
| Contact with person outside household with gastroenteritisb |
60 |
|||||||
| No |
1 (25.0) |
28 (58.3) |
1.0 |
- |
1.0 |
- |
||
| Yes |
14 (29.2) |
8 (16.7) |
4.4 |
1.3 to 14.9 |
4.4 |
1.3 to 14.9 |
||
| Do not know | 22 (45.8) | 12 (25.0) | 4.1 | 1.4 to 11.6 | 4.1 | 1.4 to 11.6 | ||
aSLV, Sapporo-like virus; PAR, population-attributable risk fraction; OR, odds ratio; uni, univariate; multi, multivariate; CI, confidence interval; n.i., not in final model.
bIn week before onset of symptoms.
