Table 3.

The growth rate of sprawl indices between 1990 and 2006 according to the change of population and GDP per capita.

Items	Population growth (per cent)	GDPcap growth (percent)
Relatively slow ArtifArea growtha	−0.50	10.26
Relatively high ArtifArea growthb	70.92	77.11
Relatively slow density growtha	2.05	77.55
Relatively high density growthb	8.77	56.06
Relatively slow scatt growtha	7.44	78.44
Relatively high scatt growthb	1.20	68.16

Notes: ^aRelatively slow growth is associated with the cities that are in the lowest quartile.

^bRelatively high growth is associated with cities that are in the highest quartile.