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Table 2 Descriptive Statistics for Five Variables Measured Using Different Buffer Types for 1600 Meter Buffers a

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

     Lower Upper   
  Mean Std Median Quartile Quartile Min Max
Fast Food Count        
Sausage buffer 5.77 5.33 5 2 8 0 61
ArcView 3.3. 5.68 5.28 5 2 8 0 61
Detailed, no trim ArcGIS 9.3 5.33 5.03 5 2 7 0 60
Detailed, trimmed ArcGIS 9.3 b 5.35 5.03 5 2 7 0 60
Generalized, no trim ArcGIS 9.3 5.31 5.02 5 2 7 0 60
Generalized, trimmed ArcGIS 9.3 5.37 5.03 5 2 7 0 60
Fast Food Density count/ha        
Sausage buffer 0.0123 0.0107 0.0105 0.0055 0.0162 0 0.1198
ArcView 3.3. 0.0118 0.0105 0.0101 0.0047 0.0158 0 0.1166
Detailed, no trim ArcGIS 9.3 0.0126 0.0115 0.0108 0.0046 0.0171 0 0.1378
Detailed, trimmed ArcGIS 9.3 0.0130 0.0117 0.0112 0.0050 0.0176 0 0.1415
Generalized, no trim ArcGIS 9.3 0.0124 0.0112 0.0107 0.0047 0.0169 0 0.1254
Generalized, trimmed ArcGIS 9.3 0.0127 0.0113 0.0109 0.0050 0.0172 0 0.1324
Convenience Store Count        
Sausage buffer 4.80 2.84 5 3 6 0 29
ArcView 3.3. 4.71 2.81 4 3 6 0 29
Detailed, no trim ArcGIS 9.3 4.44 2.72 4 3 6 0 27
Detailed, trimmed ArcGIS 9.3 4.46 2.71 4 3 6 0 27
Generalized, no trim ArcGIS 9.3 4.43 2.71 4 3 6 0 28
Generalized, trimmed ArcGIS 9.3 4.47 2.71 4 3 6 0 28
Convenience Store Density        
Sausage buffer 0.0102 0.0055 0.0099 0.0065 0.0135 0 0.0526
ArcView 3.3. 0.0098 0.0054 0.0096 0.0061 0.0127 0 0.0526
Detailed, no trim ArcGIS 9.3 0.0105 0.0060 0.0102 0.0065 0.0138 0 0.0604
Detailed, trimmed ArcGIS 9.3 0.0108 0.0059 0.0105 0.0069 0.0141 0 0.0621
Generalized, no trim ArcGIS 9.3 0.0104 0.0058 0.0102 0.0065 0.0135 0 0.0547
Generalized, trimmed ArcGIS 9.3 0.0106 0.0057 0.0104 0.0068 0.0139 0 0.0581
Percent Open Space        
Sausage buffer 7.4 5.5 5.6 3.9 9.6 0 55.5
ArcView 3.3. 7.8 6.5 5.7 3.8 10.0 0 69.0
Detailed, no trim ArcGIS 9.3 7.9 6.9 5.6 3.8 9.8 0 65.4
Detailed, trimmed ArcGIS 9.3 7.0 5.0 5.4 3.8 8.8 0 59.5
Generalized, no trim ArcGIS 9.3 7.5 6.4 5.4 3.6 9.5 0 56.5
Generalized, trimmed ArcGIS 9.3 6.9 4.8 5.5 3.8 8.9 0 48.3
  1. a. Measured for N = 2724 buffers.
  2. b. Trim is set at 100 m.