| 1 | (‘environment’ OR ‘traffic and transport’ OR ‘walking’) | 972,155 |
| 2 | ‘health service’ | 533,699 |
| 3 | #1 AND #2 | 19,922 |
| 4 | (‘physical activity’ OR ‘walkability’) | 193,972 |
| 5 | #3 AND #4 | 4614 |
| 6 | (‘adult’ OR ‘aged’) | 8,449,129 |
| 7 | #5 AND #6 | 6123 |
| 8 | [2009–2019]/py | 13,972,704 |
| 9 | #7 AND #8 | 4088 |
| 10 | [review]/lim | 2,545,959 |
| 11 | #9 AND #10 | 153 |
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