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Volume 11, Number 11—November 2005
Research

Rift Valley Fever in Small Ruminants, Senegal, 2003

Véronique Chevalier*Comments to Author , Renaud Lancelot†, Yaya Thiongane‡, Baba Sall§, Amadou Diaité‡, and Bernard Mondet¶
Author affiliations: *Centre International de Recherche Agronomique pour le Développement, Montpellier, France; †Ambassade de France, Antananarivo, Madagascar; ‡Institut Sénégalais de Recherche Agricole, Dakar-Hann, Senegal; §Direction de l'Élevage, Dakar, Senegal; ¶Institut de Recherche pour le Développement, Dakar-Hann, Senegal

Main Article

Table 5

Bayesian information criteria for 19 mixed-effect logistic regression models of Rift Valley fever serologic incidence at 15 compounds, in small ruminants,* Barkedji area, Senegal, 2003 rainy season

Fixed model BIC†
Surface‡ + Ferlo§ 32.3
Surface + distance¶ + Ferlo + surface × distance 33.0
Intercept-only model 33.2
Surface + distance + surface × distance 33.6
Surface 33.6
Ferlo 34.2
Surface + Ferlo + distance 34.5
Surface + Ferlo + surface × Ferlo 34.6
Surface + Ferlo + distance + surface × Ferlo + surface × distance 35.3
Distance 35.7
Surface + distance + Ferlo + surface × distance +distance × Ferlo 35.7
Surface + distance 36.0
Distance + Ferlo 36.7
Surface + Ferlo + distance + surface × Ferlo 36.7
Ferlo + distance + surface + distance × Ferlo 37.1
Surface + Ferlo + distance + surface × Ferlo + surface × distance +distance × Ferlo 38.0
Distance + Ferlo + distance × Ferlo 39.3
Surface + Ferlo + distance + surface × Ferlo + distance × Ferlo 39.3
Surface + Ferlo + distance + surface × Ferlo + surface × distance + distance × Ferlo + surface × Ferlo × distance 39.8

*With the pond as the random effect. N = 610 small ruminants.
†Bayesian information criterion.
‡Surface (hectare) centered on the smallest observed surface (1.6 hectare).
§Location of the pond: in the Ferlo bed (reference category) or outside the Ferlo bed.
¶Distance from the compound to the pond (hectometers) centered on the shortest observed distance (0.6 hectometers).

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Page created: February 17, 2012
Page updated: February 17, 2012
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