Table 2.

Summary of important spatial variables from at least three models.

Spatial variable			Number of models indicated as significant factors	Sign of the coefficient in the model
Main category	Sub-category	Variable
Urban geometry	Building geometry	Building height (sum)	6	(+)
		Building density (standard deviation)	6	(−)
	Road network	Street length (average)	4	(−)
Socio-demographic characteristics	Economic characteristics	Working location: Another district on Hong Kong Island	4	(+)
		Occupation: Service and sales workers	3	(+)
		Occupation: Skilled agricultural and fishery workers; and occupations not classifiable	3	(−)