Assessment of malaria risk in Southeast Asia: a systematic review

Malaria Journal

Table 3 Summary of environmental factors

Environmental factors	Number of studies	References
Types of plantations or crops	6	[16, 17, 24, 25, 27, 33]
Hilly or flat areas	5	[13, 16, 18, 25, 28]
Households or forest areas	3	[28, 29, 33]
Distance to forest or river, and the coverage of forest	6	[10, 12, 15, 16, 19, 32]
Others	5
Rice yield per square kilometer (RYPSK)	1	[23]
Enhanced Vegetation Index (EVI)	1	[30]
Normalized difference vegetation index (NDVI)	1	[21]
Normalized difference water index (NDWI)	1	[21]
Topographic wetness index (TWI)	1	[21]

ISSN: 1475-2875