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Volume 14, Number 5—May 2008

Lakes as Source of Cholera Outbreaks, Democratic Republic of Congo

Didier Bompangue*†, Patrick Giraudoux†, Pascal Handschumacher‡, Renaud Piarroux†Comments to Author , Bertrand Sudre†, Mosiana Ekwanzala§, Ilunga Kebela*, and Martine Piarroux†Comments to Author 
Author affiliations: *Health Ministry, Kinshasa, Democratic Republic of Congo; †Université de Franche-Comté, Besançon, France; ‡Institut de Recherche pour le Developpement, Strasbourg, France; §Organisation Mondiale de la Santé, Kinshasa, Democratic Republic of Congo;

Main Article


Model parameters and odds ratios of the negative binomial model selected for cholera cases in Katanga and Eastern Kasai, Democratic Republic of the Congo, 2000–2005*

Characteristic Coefficient estimate Standard error t value Pr(>|t|) Odds ratio 95% CI
Intercept 5.50 1.04 5.27 8.92 × 10−7
Ln (area) −0.28 0.11 −2.44 1.64 × 10−2
Population 1.97 × 10−6 1.17 × 10−6 1.69 9.46 × 10−2
Railway station 0.61 0.25 2.42 1.74 × 10−2 1.8 1.12–3.02
Harbor 1.39 0.33 4.16 7.06 × 10−5 4.0 2.09–7.75
Main road 1.43 0.41 3.50 7.09 × 10−4 4.2 1.88–9.32
Lake 2.01 0.33 6.12 2.20 × 10−8 7.5 3.92–14.23

*Coefficient estimate, regression coefficients (for discrete variables, their exponential gives the odds ratio); t value, value of the t distribution; Pr(>|t|), probability of the null hypothesis of a coefficient estimate not statistically different from zero; CI, confidence interval; intercept, average number of cases; Ln, natural logarithm.

Main Article

Page created: July 08, 2010
Page updated: July 08, 2010
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