Volume 14, Number 5—May 2008
Dispatch
Lakes as Source of Cholera Outbreaks, Democratic Republic of Congo
Didier Bompangue*†, Patrick Giraudoux†, Pascal Handschumacher‡, Renaud Piarroux†
, Bertrand Sudre†, Mosiana Ekwanzala§, Ilunga Kebela*, and Martine Piarroux†
, Bertrand Sudre†, Mosiana Ekwanzala§, Ilunga Kebela*, and Martine Piarroux†
Table
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.
Page created: July 08, 2010
Page updated: July 08, 2010
Page reviewed: July 08, 2010
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.