Table 1.

Descriptive statistics.

	Proportion	Min.	Mean (SD)	Max.
GDS-15 score		0.0	3.4 (2.7)	15.0
Street view green space (%): 1st quartile		6.8	11.0 (2.5)	13.6
2nd quartile		13.8	15.6 (1.0)	17.1
3rd quartile		17.3	178 (0.4)	18.6
4th quartile		19.1	21.5 (1.8)	24.4
Street view blue space (%): 1st quartile		0.0	0.1 (0.0)	0.2
2nd quartile		0.3	0.3 (0.2)	0.4
3rd quartile		0.4	0.5 (0.8)	0.7
4th quartile		0.7	1.0 (0.2)	1.5
GlobeLand30 green space (%): 1st quartile		0.0	1.2 (1.1)	2.9
2nd quartile		3.1	4.5 (1.2)	6.2
3rd quartile		6.4	18.4 (8.1)	33.9
4th quartile		34.2	62.1 (18.4)	87.6
GlobeLand30 blue space (%): 1st quartile		0.0	0.0 (0.0)	0.1
2nd quartile		0.3	0.6 (0.2)	1.0
3rd quartile		1.2	1.6 (0.3)	2.1
4th quartile		2.2	3.5 (0.9)	4.5
NDVIa 1st quartile		2.3	3.8 (0.1)	4.8
2nd quartile		4.9	5.2 (0.0)	5.7
3rd quartile		5.7	7.0 (0.1)	8.0
4th quartile		9.3	13.3 (0.1)	19.4
NDWIa: 1st quartile		3.8	4.7 (0.1)	5.6
2nd quartile		5.7	6.0 (0.0)	6.3
3rd quartile		6.3	6.8 (0.0)	7.2
4th quartile		7.3	8.9 (0.1)	12.4
NO2 (in μg/m3)		19.0	30.4 (4.8)	36.2
Age (years)		60.0	70.7 (7.0)	95.0
Gender (%): male	40.3
Female	59.7
Education (%): primary school or below	31.2
High school	43.9
College and above	24.9
Ethnicity (%): Han Chinese	96.3
Minority	3.7
Marital status (%): Single, divorced, or widowed	22.3
Married, living with spouse	76.7
Married, not living with spouse	1.0
Party membership (%): Yes	44.0
No	56.0
Hukou status (%): local hukou	94.0
Non-local hukou	6.0
Functional ability (%): restricted	54.0
Not restricted	46.0
Physical health status (%): with chronic disease	79.9
No chronic disease	20.1

^aNDVI and NDWI values multiplied by 100.