Table 2.

Variables for on-site questionnaire survey.

Component	Variables		Description
Usage	Transport mode		Bicycle, e-bike, private car, public transport, walking
	Visiting frequency		(Manually fill)
	Visit duration		(Manually fill)
Personal information
	Gender		Male, Female
	Age		0–14, 15–25, 26–50, 51–64, ≥ 65
	Residence district		Chaoyang, Haidian, Shijingshan, Dongcheng, Xicheng, Fengtai, Other
Satisfaction with urban park accessibility
	Park number (Manually fill)
	Park area		0–10 (Manually fill)
	Walking distance		0–10
Mental health evaluation
	General condition		0–10
	Activity level		0–10
	Outdoor exercise		Days in one week (more than 15 min)
Physical health evaluation
	General condition	0–10
	Life satisfaction	0–10
	Positive status	Days in one week
Social health evaluation (with neighbors)
	Communication frequency	0–10
	Trust level	0–10
Positive influence on mental health
	During pandemic	0–10
	Before pandemic	0–10