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Table 1 Key characteristics of all intervention and comparison sites

From: Evaluating the impact of improvements in urban green space on older adults’ physical activity and wellbeing: protocol for a natural experimental study

Intervention and comparison sites Location (postcode) Intervention components Floor area of green space (acres) LSOAa Population density (persons Haˉ1)b Intersection density (per 1000mˉ2)c IMDd NDVIe WalkScoref
Intervention site 1 M20 3GB 2 planted trees; bulb planting 0.09 Manchester 038C 79.50 15.37 23.08 0.38 94
Comparison site 1A M19 1EN 0.05 Manchester 034B 82.58 16.13 29.87 0.47 71
Comparison site 1B SK2 6DS 0.21 Stockport 019D 69.92 16.18 18.02 0.40 63
Intervention site 2 M20 1FU 12 planted trees; bulb planting; artificial tree decorations (string lights) 0.27 Manchester 038A 69.77 15.54 36.84 0.37 90
Comparison site 2A M20 6FE 0.24 Manchester 040A 69.85 14.27 38.24 0.44 83
Comparison site 2B OL6 8HH 0.14 Tameside 004C 73.19 16.68 51.14 0.46 54
Intervention site 3 M20 1GF 3 planted trees; artificial tree decorations (string lights, tree socks) 0.22 Manchester 035A 80.88 15.52 47.92 0.46 92
Comparison site 3A M22 9PS 0.12 Manchester 050D 78.94 17.36 54.98 0.40 80
Comparison site 3B OL6 8HW 0.19 Tameside 004C 73.19 16.68 51.14 0.46 63
Intervention site 4 M20 1AQ 8 planted trees; bulb planting; artificial tree decorations (string lights, tree socks) 0.35 Manchester 035A 80.88 15.52 47.92 0.46 48
Comparison site 4A M22 9SZ 0.17 Manchester 050D 78.94 17.36 54.98 0.40 82
Comparison site 4B M22 9PU 0.13 Manchester 050D 78.94 17.36 54.98 0.40 75
  1. aLower Layer Super Output Area (LSOA): census reporting units containing between 1000 and 3000 individuals
  2. bPopulation density: number of persons per hectare; used as a proxy measure of residential density
  3. cIntersection density: the number of 3-way junctions standardised by LSOA area; used as a measure of street connectivity
  4. dIndex of Multiple Deprivation Score (IMD) [45]: an area deprivation score that combines several indicators of deprivation including income, employment, health and crime. Higher scores indicate more deprived areas
  5. eNormalised Difference Vegetation Index (NDVI): a validated normalised scale of healthy vegetation cover; used as a measure for presence of greenery at the neighbourhood-level. Higher scores indicate areas with more healthy vegetation cover
  6. fWalkScore uses a Google search algorithm to calculate a weighted score (1–100) based on the number and accessibility of amenities (such as shops and parks) within a 1-mile radius of a user-entered postcode, whereby closer amenities with the most accessible walking routes are weighted more strongly; used as a measure of ‘access to/ availability of destinations and services’. Higher scores indicate more ‘walkable’ areas