Table 1.
The average testing areas under the curve (AUC) of the BRT models at the county level and model-predicted numbers, areas and population sizes of affected counties for the 19 most prevalent tick species in China.
| Tick species | Average AUC (2.5‒97.5% percentiles) | Predicted/observed (relative difference %) | ||
|---|---|---|---|---|
| No. of counties | Area (10,000 km2) | Population size (million) | ||
| Ixodes persulcatus | 0.892 (0.855–0.929) | 380/135 (181.5) | 173.2/87.9 (97.0) | 149.1/47.5 (213.9) |
| I. sinensisac | 0.924 (0.894–0.953) | 630/113 (457.5) | 81.2/14.1 (475.9) | 363.3/77.2 (370.6) |
| I. granulatus | 0.943 (0.920–0.965) | 373/103 (262.1) | 62.5/18.6 (236.0) | 201.4/51.5 (291.1) |
| I. crenulatusb | 0.918 (0.885–0.951) | 205/76 (169.7) | 322.3/113.0 (185.2) | 33.8/16.4 (106.1) |
| I. ovatus | 0.828 (0.778–0.878) | 335/57 (487.7) | 145.1/28.2 (414.5) | 110.5/20.9 (428.7) |
| Haemaphysalis longicornisac | 0.900 (0.879–0.920) | 1140/303 (276.2) | 172.8/70.9 (143.7) | 588.0/138.3 (325.2) |
| Ha. concinna | 0.875 (0.827–0.922) | 165/72 (129.2) | 86.2/55.3 (55.9) | 51.1/24.9 (105.2) |
| Ha. japonica | 0.888 (0.835–0.941) | 95/52 (82.7) | 36.4/21.4 (70.1) | 27.7/17.8 (55.6) |
| Ha. hystricis | 0.893 (0.854–0.933) | 205/43 (376.7) | 43.2/12.5 (245.6) | 86.2/19.6 (339.8) |
| Rhipicephalus sanguineusc | 0.833 (0.800–0.866) | 470/221 (112.7) | 163.1/94.0 (73.5) | 236.4/96.9 (144.0) |
| R. microplusac | 0.871 (0.844–0.898) | 678/188 (260.6) | 138.3/54.1 (155.6) | 349.6/106.8 (227.3) |
| R. haemaphysaloidesc | 0.901 (0.862–0.940) | 471/76 (519.7) | 76.3/14.4 (429.9) | 232.9/35.5 (556.1) |
| Dermacentor nuttalliab | 0.966 (0.956–0.975) | 557/382 (45.8) | 378.6/274.1 (38.1) | 153.2/109.3 (40.2) |
| D. silvaruma | 0.926 (0.907–0.944) | 492/274 (79.6) | 155.6/129.7 (20.0) | 168.1/96.2 (74.7) |
| D. daghestanicusb | 0.930 (0.882–0.977) | 112/62 (80.6) | 196.5/95.9 (104.9) | 22.0/13.6 (61.8) |
| D. marginatus | 0.960 (0.942–0.978) | 81/62 (30.6) | 54.3/47.7 (13.8) | 19.0/13.9 (36.7) |
| Hyalomma scupense | 0.912 (0.893–0.932) | 410/234 (75.2) | 168.6/137.3 (22.8) | 160.7/81.9 (96.2) |
| Hy. asiaticumb | 0.948 (0.926–0.969) | 186/135 (37.8) | 299.7/212.2 (41.2) | 39.2/31.4 (24.8) |
| Argas persicusb | 0.874 (0.836–0.902) | 225/68 (230.9) | 208.7/45.7 (356.7) | 104.2/42.3 (146.3) |
The predicted numbers are compared with the actual observations from field surveys and the relative differences (%) are given in parentheses.
aTop 5 tick species affecting largest numbers of counties.
bTop 5 tick species affecting largest areas.
cTop 5 tick species affecting largest population sizes.