Accessibility measure | Aggregation method | Accessibility measures using Euclidean distance | Accessibility measures using shortest network time (on foot) | ||||
---|---|---|---|---|---|---|---|
CTCa | WDAb | WBLc | CTCa | WDAb | WBLc | ||
Minimum distance | CTCa | – |  |  | – |  |  |
WDAb | 0.994 | – |  | 0.992 | – |  | |
WBL1c | 0.992 | 0.999 | – | 0.988 | 0.997 | – | |
WBL2d | 0.991 | 0.998 | 0.999 | 0.988 | 0.997 | 0.999 | |
Average distance to all hospitals | CTCa | – |  |  | – |  |  |
WDAb | 0.999 | – |  | 0.999 | – |  | |
WBL1c | 0.999 | 1.000 | – | 0.999 | 1.000 | – | |
WBL2d | 0.999 | 1.000 | 1.000 | 0.999 | 1.000 | 1.000 | |
Average distance to three closest hospitals | CTCa | – |  |  | – |  |  |
WDAb | 0.998 | – |  | 0.997 | – |  | |
WBL1c | 0.998 | 1.000 | – | 0.995 | 0.999 | – | |
WBL2d | 0.997 | 1.000 | 1.000 | 0.995 | 0.999 | 1.000 | |
Average distance to five closest hospitals | CTCa | – |  |  | – |  |  |
WDAb | 0.999 | – |  | 0.998 | – |  | |
WBL1c | 0.998 | 1.000 | – | 0.998 | 1.000 | – | |
WBL2d | 0.998 | 1.000 | 1.000 | 0.998 | 0.999 | 1.000 | |
Number of hospitals within 500 m or 10 min | CTCa | – |  |  | – | 0.792 | 0.749 |
WDAb | 0.753 | – |  | 0.792 | – | 0.935 | |
WBL1c | 0.716 | 0.940 | – | 0.749 | 0.935 | – | |
WBL2d | 0.704 | 0.923 | 0.985 | 0.740 | 0.921 | 0.962 | |
Number of hospitals within 1000 m or 20 min | CTCa | – |  |  | – |  |  |
WDAb | 0.856 | – |  | 0.899 | – |  | |
WBL1c | 0.819 | 0.954 | – | 0.875 | 0.967 | – | |
WBL2d | 0.809 | 0.942 | 0.984 | 0.878 | 0.963 | 0.985 | |
Number of hospitals within 2000 m or 30 min | CTCa | – |  |  | – |  |  |
WDAb | 0.956 | – |  | 0.950 | – |  | |
WBL1c | 0.950 | 0.992 | – | 0.940 | 0.983 | – | |
WBL2d | 0.949 | 0.991 | 0.998 | 0.935 | 0.982 | 0.994 | |
Potential gravity model (friction parameter = 1) | CTCa | – |  |  | – |  |  |
WDAb | 0.995 | – |  | 0.996 | – |  | |
WBL1c | 0.996 | 0.999 | – | 0.995 | 0.999 | – | |
WBL2d | 0.995 | 0.999 | 1.000 | 0.995 | 0.999 | 0.999 | |
Potential gravity model (friction parameter = 1.5) | CTCa | – |  |  | – |  |  |
WDAb | 0.988 | – |  | 0.980 | – |  | |
WBL1c | 0.989 | 0.998 | – | 0.975 | 0.993 | – | |
WBL2d | 0.988 | 0.997 | 0.998 | 0.981 | 0.995 | 0.996 | |
Potential gravity model (friction parameter = 2) | CTCa | – |  |  | – |  |  |
WDAb | 0.972 | – |  | 0.952 | – |  | |
WBL1c | 0.979 | 0.990 | – | 0.931 | 0.960 | – | |
WBL2d | 0.981 | 0.986 | 0.995 | 0.962 | 0.984 | 0.974 | |
Two-step floating catchment area (2000 m or 30 min) | CTCa | – | 0.977 | 0.976 | – |  |  |
WDAb | 0.977 | – | 0.996 | 0.883 | – |  | |
WBL1c | 0.976 | 0.996 | – | 0.863 | 0.976 | – | |
WBL2d | 0.976 | 0.996 | 0.999 | 0.864 | 0.978 | 0.992 | |
Enhanced two-step floating catchment area with a slow step-decay function | CTCa | – |  |  | – |  |  |
WDAb | 0.918 | – |  | 0.908 | – |  | |
WBL1c | 0.908 | 0.986 | – | 0.897 | 0.976 | – | |
WBL2d | 0.908 | 0.986 | 0.997 | 0.889 | 0.972 | 0.991 | |
Enhanced two-step floating catchment area with a fast step-decay function | CTCa | – |  |  | – |  |  |
WDAb | 0.916 | – |  | 0.905 | – |  | |
WBL1c | 0.906 | 0.986 | – | 0.894 | 0.975 | – | |
WBL2d | 0.907 | 0.986 | 0.997 | 0.887 | 0.971 | 0.991 | |
Enhanced two-step floating catchment area with a gradient function | CTCa | – |  |  | – |  |  |
WDAb | 0.917 | – |  | 0.907 | – |  | |
WBL1c | 0.908 | 0.987 | – | 0.895 | 0.975 | – | |
WBL2d | 0.909 | 0.987 | 0.997 | 0.887 | 0.972 | 0.991 |