Volume 8, Number 6—June 2002
Research
Drought-Induced Amplification of Saint Louis encephalitis virus, Florida
Jeffrey Shaman*
, Jonathan F. Day†, and Marc Stieglitz*
, Jonathan F. Day†, and Marc Stieglitz*Table 1
Best fit results of univariate logistic regression analysis, Floridaa
| Univariate Best Fits | ||||||
|---|---|---|---|---|---|---|
| Site | Time lagged WTD | Intercept | Slope | Whole model fit p-value | Intercept | Slope |
| 1 | 16 | 66.70 | 44.22 | 0.015 | 0.016 | 0.0001 |
| 2 | 17 | 22.99 | 14.63 | 0.0093 | 0.015 | 0.0001 |
| 3 | 18 | 28.72 | 18.82 | 0.0050 | 0.0069 | 0.0001 |
| 4 | 16 | 74.10 | 49.01 | 0.016 | 0.017 | 0.0001 |
| 5 | 25 | 20.35 | 13.22 | 0.0004 | 0.0010 | 0.0001 |
| All five sites | 19 | 18.55 | 12.49 | 0.0001 | 0.0001 | 0.0001 |
aWTD, water table depth; the probability of SLEV transmission incidence is represented as a function of single time lags of weekly averaged modeled WTD. Whole model goodness-of-fit was assessed by log-likelihood ratio and the pseudo r-squared (uncertainty) coefficient. Individual parameter estimates were made by Wald’s chi-square test.
