Table 1 Area of activity space and proximity to primary roads for the five measures. Means and medians reported for untransformed measures. SDE1 = standard deviational ellipse at one standard deviation; SDE2 = standard deviational ellipse at 2 standard deviations; RNB = road network buffer; STT = standard travel time polygon; RTT = relative travel time polygon.
From: A suite of methods for representing activity space in a healthcare accessibility study
| Â | SDE1 | SDE2 | RNB | STT | RTT | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Â | Mean | Median | Mean | Median | Mean | Median | Mean | Median | Mean | Median |
Area (km2) (n = 1047) | 182.2 | 71.5 | 728.7 | 286.0 | 107.0 | 95.7 | 2301 | 2160 | 2845 | 1425 |
Area and residential proximity to primary roads: | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
More than 5 km away from primary road | 233.2 | 120.6 | 932.8 | 482.5 | 130.5 | 115.8 | 1333.2 | 1219.9 | 3256.0 | 2141.1 |
Within 5 km of a primary road | 175.5 | 64.9 | 702.1 | 259.6 | 103.8 | 92.4 | 2432.6 | 2226.5 | 2789.7 | 1344.2 |