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Table 4 TSS of different definitions of being contiguous for sample areas in Aberdeenshire and Ayrshire

From: The performance of approximations of farm contiguity compared to contiguity defined using detailed geographical information in two sample areas in Scotland: implications for foot-and-mouth disease modelling

   Current method
   All premises <1 km point distance All premises <3 km point distance All premises <5 km point distance All premises <26 m field distance All premises <151 m field distance All premises <1 km field distance By Voronoi tessellation By area weighted tessellation
Aberdeenshire          
Gold standard All <15 m 0.283 0.696 0.391 0.996 0.988 0.885 0.651 0.725
All <15 m - river 0.289 0.701 0.400 0.991 0.984 0.881 0.650 0.724
All <15 m - road 0.279 0.705 0.385 0.985 0.978 0.876 0.643 0.725
All <15 m - river/road 0.285 0.712 0.397 0.981 0.974 0.872 0.642 0.725
All <15 m - river/road/ditch 0.297 0.702 0.390 0.976 0.969 0.868 0.630 0.723
All <15 m - river/ditch 0.308 0.686 0.392 0.984 0.977 0.876 0.638 0.722
Shared fence 0.281 0.705 0.398 0.982 0.974 0.873 0.665 0.737
Shared fence - river 0.282 0.702 0.395 0.980 0.973 0.872 0.655 0.730
  Shared fence - river/ditch 0.299 0.691 0.390 0.976 0.968 0.868 0.647 0.731
Ayrshire          
Gold standard All <15 m 0.316 0.672 0.386 0.998 0.988 0.899 0.584 0.623
All <15 m - river 0.320 0.662 0.385 0.995 0.985 0.896 0.580 0.619
All <15 m - road 0.309 0.680 0.394 0.992 0.982 0.893 0.598 0.637
All <15 m - river/road 0.314 0.670 0.393 0.988 0.979 0.890 0.595 0.635
All <15 m - river/road/ditch 0.340 0.671 0.392 0.985 0.975 0.887 0.600 0.632
All <15 m - river/ditch 0.343 0.664 0.386 0.991 0.981 0.893 0.584 0.617
Shared fence 0.314 0.672 0.391 0.989 0.980 0.891 0.578 0.620
Shared fence - river 0.320 0.666 0.392 0.987 0.978 0.889 0.583 0.624
Shared fence - river/ditch 0.344 0.668 0.391 0.984 0.974 0.886 0.590 0.624