Table 1

Approaches for conceptualizing and measuring the geographical accessibility of services and facilities for residential areas


Accessibility measures

Immediate proximity

The distance between a location and the closest facility

Availability within one area unit

The number of facilities contained within a given unit (for example, census tract)

Availability provided by the immediate surroundings

The number of facilities within a given distance from a point of origin

Average cost to reach all destinations

The average distance between a location and all facilities

Average cost to reach diversity

The average distance between a location and n facilities

Adapted from Talen [41] and Apparicio et al. [32].

Apparicio et al. International Journal of Health Geographics 2008 7:7   doi:10.1186/1476-072X-7-7

Open Data