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Table 3 Surgical margin characteristics

From: Surgical margins of the oral cavity: is 5 mm really necessary?

Variable

N

Relative frequency

Closest margin (mm) – mean ± SD, median

401

2.70 ± 2.44

Closest margin (mm) – n (%)

 0 (positive)

401

74 (18.5)

  > 0, ≤ 1

 

95 (23.7)

  > 1, ≤ 2

 

43 (10.7)

  > 2, ≤ 3

 

65 (16.2)

  > 3, ≤ 5

 

73 (18.2)

  > 5

 

51 (12.7)

Positive patient margins – n (%)

408

79 (19.4)

Re-excision of suspected close margin– n (%)

412

73 (17.7)

Re-excision positive margin status – n (%)

73

14 (19.2)