Table 1

Factors selected using principal component analysis
Factor Groups of variables having unique dimensions
1 Perennial, orchard and rangeland
2 Recreation area and golf course
3 Deciduous forest and mine
4 Reservoir and pasture/farm house
5 City and aquaculture land
6 Institutional land, build-up village and natural water body
7 Field crop and pit
8 Marsh/swap/rice paddy and gasoline station/workshop
9 Transportation/communication, horticulture and landfill
10 Industrial area and forest plantation
11 Perennial/orchard and cemetery
12 Marsh/swamp and paddy field

One group is treated as one variable during processing of data. Factors scores were used to investigate the contribution of each variable to the dengue indices.

Sarfraz et al.

Sarfraz et al. BMC Public Health 2012 12:853   doi:10.1186/1471-2458-12-853

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