Summary of green space-brain health associations by brain health measure
| Citation* | Sample size | Population based / random sample | Location | Longitudinal brain health measure | Cognition | MRI brain regions | Diagnosis of cognitive impairment/ dementia |
| Brown9 | 249 405 | Yes | USA | No | + | ||
| Cherrie63 | 281 | Yes | UK | Yes | +N | ||
| Cherrie64 | 281 | Yes | UK | Yes | +N | ||
| Clarke53 | 949 | Yes | USA | No | N | ||
| Dadvand65 | 2593 | No | Spain | Yes | +N | ||
| Dadvand54 | 987 | Yes | Spain | Yes | +N | ||
| Dadvand66 | 253 | No | Spain | No | +N | ||
| Dzhambov72 | 112 | No | Bulgaria | No | + | +N | |
| De Keijzer55 | 6506 | Yes | UK | Yes | +N | ||
| Flouri56 | 4758 | Yes | UK | No | + | ||
| Hystad57 | 6658 | Yes | Canada | No | - N | ||
| Kuhn73 | 341 | No | Germany | No | +N | ||
| Liao67 | 1312 | No | China | No | + | ||
| Reuben68 | 1658 | Yes | UK | Yes | N | ||
| Wang69 | 3544 | No | China | No | N | ||
| Ward70 | 72 | No | New Zealand | No | N | ||
| Wu59 | 2424 | Yes | UK | No | – | ||
| Wu58 | 7505 | Yes | UK | No | - N | ||
| Yu71 | 3240 | No | China | No | N | ||
| Yuchi60 | 678 000 | Yes | Canada | Yes | + - | ||
| Zhu61 | 6994 | Yes | China | Yes | + | ||
| Zijlema62 | 1628 | Yes | Spain, UK, Netherlands | No | +N | ||
| Studies with positive associations | 9 | 3 | 3 | ||||
| Studies with inverse associations | 1 | 0 | 3 | ||||
| Studies with null associations | 12 | 3 | 1 | ||||
| Total studies | 15 | 3 | 5 | ||||
*Full list of papers found in online supplemental text 1.
+, positive association; -, inverse association; N, null association.