Table 6. Model results for Mekong River Delta, Wave 1 (December ‘03 –February ‘04).
GLMM | BRT | |||||
---|---|---|---|---|---|---|
Coefficient | p | s.e. | Relative Influence (%) | s.e. | Rank | |
Intercept | 35.702 | 0.129 | 23.528 | n/a | ||
Urbanicity. | 1.43 | 0.08 | 14 | |||
Urbanicity: rural | 0 | |||||
Urbanicity: peri-urban | 0.149 | 0.592 | 0.277 | |||
Urbanicity: urban | 1.292 | 0.025 | 0.575 | |||
Percentage land under rice* | 3.632 | 0.021 | 1.571 | 4.32 | 0.06 | 8 |
Percentage land under aquaculture* | 5.393 | 0.063 | 2.898 | 6.47 | 0.06 | 3 |
Land-use diversity (Gini-Simpson index) | -0.059 | 0.956 | 1.069 | 5.39 | 0.04 | 5 |
Chicken density* | -0.082 | 0.791 | 0.308 | 4.59 | 0.07 | 6 |
Duck-rice area density | 0.297 | 0.454 | 0.396 | 4.46 | 0.07 | 7 |
Chicken flock size diversity (Gini-Simpson Index) | 0.689 | 0.642 | 1.481 | 6.50 | 0.07 | 2 |
Duck & goose flock size diversity (Gini-Simpson Index) | -0.057 | 0.935 | 0.704 | 6.25 | 0.08 | 4 |
Annual precipitation* | -12.623 | 0.000 | 3.288 | 15.67 | 0.07 | 1 |
Compound Topographical Index* | 3.183 | 0.863 | 18.482 | 3.52 | 0.08 | 9 |
Shortest distance to nearest national highway* | 0.141 | 0.036 | 0.067 | 1.82 | 0.06 | 13 |
Shortest distance to nearest provincial highway* | 0.012 | 0.825 | 0.054 | 2.06 | 0.07 | 11 |
Shortest distance to nearest town* | 0.074 | 0.504 | 0.111 | 2.04 | 0.07 | 12 |
Shortest distance to nearest lake* | 0.077 | 0.135 | 0.569 | 2.88 | 0.04 | 10 |
Autoregressive term | n/a | 32.63 | 0.04 | |||
AUC-ROC | 0.891 | Trg = 0.911, Eval = 0.811 |
* Transform of the type log10(1+x) was used
s.e. = standard error, Rank = rank of relative influence excluding the rank of the autoregressive term, AUC-ROC = Area Under the Curve of the Receiver Operating Characteristic, Trg = Training, Eval = Evaluation