Environmental features | Percentile | |||||
---|---|---|---|---|---|---|
Min | Max | Mean ± SDa | Median | 33th | 66th | |
Physical environments | ||||||
 Parks, greeneries, and square areab | 0 | 25.98 | 0.54 ± 1.50 | 0.29 | 0.17 | 0.42 |
 Playgrounds and sport venuesb | 0 | 156.23 | 1.42 ± 8.58 | 0.21 | 0.11 | 0.46 |
 Community centersc | 0 | 324.75 | 42.68 ± 43.45 | 31.90 | 15.28 | 49.13 |
Social environments | ||||||
 Median annual family incomed | 339 | 829 | 507.24 ± 68.02 | 494 | 473 | 519 |
 Illiterate people aged≧65 (%) | 0.22 | 55.93 | 18.69 ± 11.04 | 16.29 | 12.65 | 22.21 |
 Elderly living alonee | 0 | 539.29 | 38.91 ± 51.74 | 19.15 | 13.72 | 32.26 |