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Table 1 Means and standard deviations of PMCT variables in gunshot distance groups, with P values against the contact shot group

From: Post-mortem computed tomography in forensic shooting distance estimation: a porcine cadaver study

Variable Contact shot (n = 23) Close-range shot (n = 21) Distant shot (n = 15)
Mean SD Mean SD P value1 Mean SD P value1
Channel diameter (mm) 3.4 0.7 4.5 0.7 0.002 5.3 0.8  < 0.001
Ring diameter (mm) 7.8 1.3 Not visible   Not visible  
Ring thickness (mm) 2.4 0.6 Not visible   Not visible  
  1. Individual measurements are presented in Additional file 2: Table S2
  2. SD standard deviation
  3. 1P values against the contact shot group