Volume 11, Number 11—November 2005
Research
Rift Valley Fever in Small Ruminants, Senegal, 2003
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).