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Table 1 Comparison of Areas in Hectares for Buffers at 400, 1600, and 3000 Meters

From: Creating a replicable, valid cross-platform buffering technique: The sausage network buffer for measuring food and physical activity built environments

  A. Sausage Buffer B. ArcGIS 9.3,Gen., Trim a, b Ratio of B/A C. ArcGIS 9.3, Gen., No Trim a, b Ratio of C/A D. ArcGIS 9.3, Detailed, Trim b Ratio of D/A E. ArcGIS 9.3, Detailed, No Trim a, b Ratio of E/A F. ArcView 3.3 Ratio of F/A
400 m c, d            
Mean 33.3 25.6 0.8 22.4 0.7 24.8 0.7 24.5 0.7 25.5 0.8
Std. dev. 4.9 4.7   6.1   5.1   5.4   6.6  
Median 35.2 26.8   24.7   26.6   26.5   28.1  
Min. 14.9 6.5   1.2   7.0   2.0   1.7  
Max. 40.3 35.8   31.1   35.1   41.0   36.0  
1600 m            
Mean 455.0 408.8 0.9 416.9 0.9 400.6 0.9 416.4 0.9 469.3 1.0
Std. dev. 77.4 77.6   69.7   76.8   66.7   70.0  
Median 476.9 429.8   437.0   421.2   435.1   489.8  
Min. 68.1 35.6   22.5   43.0   72.0   55.7  
Max. 577.7 531.9   525.4   530.4   533.4   589.2  
3000 m            
Mean 1593.6 1495.0 0.9 1565.6 1.0 1478.0 0.9 1550.0 1.0 1758.0 1.1
Std. dev. 240.0 243.7   196.1   239.8   190.4   197.7  
Median 1660.7 1557.3   1615.5   1542.2   1597.1   1806.7  
Min. 258.7 171.2   297.1   189.0   317.8   429.4  
Max. 1977.8 1871.7   1892.5   1867.3   1875.2   2166.5  
  1. a. Gen = Generalized buffer.
  2. b. Trim default is 100 meters—As described in the paper, the definition of trim is not given in the program’s documentation but if people use the default value it will be set at 100 m.
  3. c. Orientation is the opposite of Table 1 and straight line buffer is not included.
  4. d. All figures for 2724 participants for whom data were available.