Table 4.
Summary of average relative contributions (%) of predictor variables in the BRT models.
| Characteristics | Average relative contributions (SD), % |
|---|---|
| GDP* | 36.37 (6.01) |
| Population density* | 15.93 (2.91) |
| Length of township roads* | 13.34 (4.88) |
| Number of farms* | 9.87 (2.20) |
| Nighttime lights* | 8.06 (3.35) |
| Urban accessibility | 5.63 (2.87) |
| Length of first-grade highways | 5.31 (1.75) |
| Number of slaughterhouses | 3.36 (1.39) |
| Length of secondary roads | 1.49 (0.87) |
| Cattle density | 0.30 (0.31) |
| Pig density | 0.16 (0.19) |
| Sheep density | 0.11 (0.20) |
| Goat density | 0.07 (0.09) |
*
Variables with a relative contribution of >7.69 in BRT models were considered to be significantly contributing to the occurrence of human infection brucellosis. SD, Standard Deviation.