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. 2013 Oct 8;9:198. doi: 10.1186/1746-6148-9-198

Table 4.

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

 
 
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