Table 3. Variable normalization method

Classification		Net sequence	Inverse sequence
Index of park derivation (IPD)	Park service level	-	• Park area per capita
			• Park servioe area ratio
			• Number of parks within service range
	Demographic characteristics	• Population density	-
		• Elderly population ratio
		• Youth population ratio
	Economic and educational level	• Natbnal basic livelihood recipients ratio	• Key productive population rate
			• Higher education population ratio
			• Financial independence
	Health level	• Obesity population ratio	• Walking participation ratio
		• Depression experience population ratio
		• Stress awareness population ratio
	Environmental vulnerability	•Health vulnerability by heat wave	-
		• Health vulnerability by flood
		• Health vulnerability by fine dust
Standardization method		Zi = Xi − min( Xi ) / max( Xi ) − min( Xi )	Zi = max( Xi ) − Xi / max( Xi ) − min( Xi )
		• Xi : I observation of index X	• Xi : I observation of index X
		• max(Xi): Maximum value of the variable	• max(Xi): Maximum value of the variable
		• min(Xi): Minimum value of the variable	• min(Xi): Minimum value of the variable