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Table 1 Comparison of geographic information available on OSM in Ifanadiana district following mapping and the average geographic information available in the other districts of Vatovavy-Fitovinany Region

From: Improving geographical accessibility modeling for operational use by local health actors

  Ifanadiana Distric averagea for the rest of Vatovavy-Fitovinany region
n (%) Length (km) Area (ha) n (%) Length (km) Area (ha)
Residential area 4925     223    
[0, 20] 4241 86.11    206 92.38   
(20, 40] 371 7.53    9 4.03   
(40, 50] 58 1.18    1 0.45   
(50, 100] 177 3.59    4 1.19   
> 100 78 1.58    3 1.35   
Buildings 106,171     6723    
Isolated house 36,539 34.42    5086 75.65   
On residential area 69,632 65.58    1637 24.35   
Rice field 17,446    13,436 201    297
Road networks         
Path    23,726     400  
Secondary road    62     68  
Tertiary road    130     45  
  1. aThe average here represents the sum of the number of residential areas, buildings, rice fields and the length of road networks in the other 5 districts of the region (Manakara, Mananjary, Ikongo, Vohipeno, Nosy-Varika) divided by 5