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Volume 7, Number 1—February 2001
Research

Gastroenteritis in Sentinel General Practices, the Netherlands

Matty A.S. de Wit*Comments to Author , Marion P.G. Koopmans*, Laetitia M. Kortbeek*, Nan J. van Leeuwen*, AAD I.M. Bartelds†, and Yvonne T.H.P. van Duynhoven*
Author affiliations: *National Institute of Public Health and the Environment, Bilthoven, The Netherlands; †Netherlands Institute of Primary Health Care, Utrecht, the Netherlands

Main Article

Table 1

Univariate and multivariate Poisson regression analyses of the incidence per 10,000 person years

Univariate Poisson Multivariate Poisson
regression regression
Crude
Incidence per 10,000 person years incidence RR 95% CI RR 95% CI
Study year
May 96-Apr 97 52.4 1.00 - 1.00 -
May 97-Apr 98 62.4 1.19 1.08-1.32 1.19 1.08-1.32
May 98-Apr 99 65.6 1.25 1.13-1.38 1.23 1.11-1.36
Participation in case-control study
Yes 65.8 2.51 2.13-2.97 2.71 2.28-3.22
No 26.2 1.00 - 1.00 -
Urbanization
Low 57.0 1.04 0.92-1.17 1.18 1.04-1.34
Intermediate 55.5 1.00 - 1.00 -
High 88.9 1.62 1.47-1.79 1.25 1.11-1.41
North 28.7 0.39 0.34-0.45 0.35 0.29-0.40
East 71.3 0.97 0.88-1.07 0.93 0.83-1.05
West 76.0 1.00 - 1.00 -
South 55.5 0.75 0.68-0.84 0.78 0.69-0.88
Gender
Male 56.8 1.00 - 1.00 -
Female 63.4 1.12 1.03-1.21 1.12 1.04-1.22
Age (in years)
0 360.4 5.53 4.49-6.82 5.54 4.50-6.83
1-4 221.5 3.40 2.94-3.94 3.36 2.90-3.89
5-14 65.1 1.00 - 1.00 -
15-24 51.7 0.79 0.67-0.94 0.79 0.67-0.93
25-39 55.9 0.86 0.75-0.98 0.84 0.73-0.97
40-64 36.5 0.56 0.48-0.65 0.56 0.48-0.65
>65 47.7 0.73 0.62-0.87 0.72 0.61-0.85

RR = relative risk; CI = confidence interval.

Main Article

Page created: March 16, 2011
Page updated: March 16, 2011
Page reviewed: March 16, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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