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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*Comments to Author 
Author affiliations: *National Institute of Public Health and the Environment, Bilthoven, the Netherlands

Main Article

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.

Main Article

1Current address of first author: Municipal Health Service, Department of Epidemiology, Documentation and Health Promotion, Nieuwe Achtergracht 100, 1018 WT Amsterdam, the Netherlands; email: mdwit@gggd.amsterdam.nl

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