Table 5 Comparison of travel time with Euclidean and friction surfaces methods
From: Improving geographical accessibility modeling for operational use by local health actors
Time estimation methoda | Sample of fieldwork routes (N = 168) | All routes (N = 41,426) | ||||
|---|---|---|---|---|---|---|
Absolute difference (minutes) | Relative difference (%) | PHC | CHS | |||
Absolute difference (minutes) | Relative difference (%) | Absolute difference (minutes) | Relative difference (%) | |||
Fieldwork | Reference | Reference | – | – | – | – |
OSRM + statistical model | 3.6 | 4.27 | Reference | Reference | Reference | Reference |
Euclidian distance + 5 km/h speed | 31.22 | 40.5 | 47.54 | 36.89 | 13.27 | 34.47 |
Friction surfaces + custom speed values | 22.57 | 29.81 | 26.31 | 19.88 | 7.86 | 25.35 |