Table 5. Citations Organized by Variable Group.

Variables Group	Citations	Total
Affected Population	[61], [75], [76], [79], [82]–[85], [88], [93], [95], [99], [101], [115]	14
Agricultural	[74], [79], [83], [90], [95]	5
Climatic	[21], [75], [76], [78], [80], [85], [87], [89]–[91], [94], [97], [98], [100], [102], [106], [107], [111], [115]	19
Clinical	[62], [76], [79], [92], [93], [101], [112]–[114]	10
Epidemiological	[61], [79], [81], [89], [92], [99], [111]	7
Etiology	[61], [62], [74], [77], [81], [82], [89], [111], [113], [114]	13
Geospatial	[62], [74], [75], [79], [80], [83], [84], [91], [93]–[96], [102], [104]–[106], [108], [109], [111], [115]	20
Remote Sensing	[21], [83], [87], [88], [94], [99], [102]–[105], [107]	11
Social, Cultural, Behavioral	[75], [93], [96], [98]	4
Time	[74], [82], [87], [94], [99], [100], [102], [108], [112], [113]	12
Topography or Environment	[78], [85], [88], [91], [95], [98]–[100], [102]–[106]	13
Vector or Other Populations	[61], [62], [75], [85], [87], [95], [115]	7

If a model contained variables from multiple groups, it was placed in each respective group.