From: HABITAT: A longitudinal multilevel study of physical activity change in mid-aged adults

Factor | Definition |
---|---|

Index of Relative Socioeconomic Disadvantage (IRSD) | Reflects socioeconomic attributes such as the proportion of low income families and individuals with limited educational attainment, the occupancy of public sector housing, the unemployment rate, and the extent of the workforce in relatively unskilled occupations, etc. |

Street lights | A count of the number of street lights within a defined catchment area of each sampled resident's home |

Major street intersections | A count of the number of four- or five-way intersections within a defined catchment around each sampled resident's home. A higher number of intersections indicate greater street connectivity |

Hilliness | The standard deviation of the elevation values within a defined catchment area around each sampled resident's home. Larger standard deviation values indicate hillier areas. |

Tree coverage | A count of the number of pixels of tree coverage (extracted from aerial photography) multiplied by 2.4, which corresponds to the land-area covered by each pixel. The values for the measure reflect the number of square meters of tree coverage within a defined catchment area around each sampled resident's home |

Green space | Number of square meters of public-accessible open green space (e.g. parks, reserves, sports fields) within a defined catchment area around each sampled resident's home |

Distance-to-shops | Euclidean distance in kilometers to the closest shop from each sampled residents' home (includes chemist) |

Distance-to-public park | Euclidean distance in kilometers to the closest public park from each sampled resident's home |

Distance-to-public transport | Euclidean distance in kilometers to the closest bus-stop/train station from each sampled resident's home |

Distance to river or coast | Euclidean distance in kilometers to either the Brisbane River or Bay, whichever is closer, from each sampled resident's home |

Distance to recreational facility | Euclidean distance in kilometers to a specific recreational facility (e.g., swimming pool, tennis court) from each sampled resident's home |

Distance to post box/office | Euclidean distance in kilometers to a post office or postbox from each sampled resident's home |

Distance to take away food outlet | Euclidean distance in kilometers to a take away food outlet (includes MacDonalds, Subway, KFC, Hungry Jacks) from each sampled resident's home |

Distance to doctor's surgery | Euclidean distance in kilometers to a general practice from each sampled resident's home |

Footpaths | Meters of footpath within a defined radius around participant |

Pedestrian crossings | Number of pedestrian crossings within a defined catchment area around each sampled residents home |

Bike paths | Meters of bike path within a defined catchment area around each sampled resident's home |