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. 2013 Jan 7;8(1):e53362. doi: 10.1371/journal.pone.0053362

Table 3. Comparison of significant environmental factors correlated to HPAI H5N1 outbreaks in poultry (this study) and wild birds (adapted from [4]) in Europe, as maintained in the final multiple logistic regression model.

Type Poultry B OR 95% CIs OR P-value AIC ± SD AUC ± SD
Model <0.001 283±18 0.81±0.03
Intercept −0.16 0.462
Physical PrecNov −0.05 0.955 0.936 0.973 <0.001
environmental TmaxNov 0.03 1.027 1.017 1.037 <0.001
factors STmaxNov 0.45 1.586 1.228 2.049 0.025
interaction Popdenglwd 0.26 1.319 1.08 1.629 0.042
Wild birds
Model <0.001 638±25 0.81±0.02
Intercept −10.9 <0.001
Physical Dem −0 0.999 0.998 0.999 0.016
environmental PrecJan −0.04 0.963 0.950 0.976 <0.001
factors TminJan 0.03 1.026 1.018 1.034 <0.001
NDVIMar 50.6 1.170 0.059 23.630 <0.001
SNDVIMar −56.4 0.408 0.307 0.543 <0.001
NDVIDec 6.1 1319 100 17685 <0.001

OR - odds ratios, 95% CIs OR −95% confidence intervals of odds ratios, AIC - Akaike’s information criterion, AUC - the area under the Receiver Operating Characteristic curve, Prec - precipitation, Tmax - maximum temperature, Tmin - minimum temperature, S - square term, Popdenglwd - human population density combined with the proximity to lakes or wetlands.