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Table 3 Comparison of clinicopathologic characteristics between low and high Ki-67 expression

From: Role of postoperative radiotherapy in dermatofibrosarcoma protuberans: a propensity score-matched analysis

Characteristic n (%) Ki-67 < 17% Ki-67 ≥ 17% P
Presentation     0.942
 Primary 35(62.5) 23(62.2) 12(63.2)  
 Recurrent 21(37.5) 14(37.8) 7(36.8)  
Gender     0.749
 Male 49(87.5) 32(86.5) 17(89.5)  
 Female 7(12.5) 5(13.5) 2(10.5)  
Age(years)     0.047
 <  50 39(69.6) 29(78.4) 10(52.6)  
 ≥ 50 17(30.4) 8(21.6) 9(47.4)  
Site     0.465
 Trunk 41(73.2) 29(78.4) 12 (63.2)  
 Extremities 6(10.7) 3(8.1) 3 (15.8)  
 Head and neck 9(16.1) 5(13.5) 4 (21.1)  
Tumor size, cm     0.192
 <  5 36(64.3) 26(70.3) 10(52.6)  
 ≥ 5 20(35.7) 11(29.7) 9(47.4)  
Lesion number     0.749
 1 49(87.5) 32(86.5) 17(89.5)  
 ≥ 2 7(12.5) 5(13.5) 2(10.5)  
Margin status     0.961
 Negative 44(78.6) 29(78.4) 15(78.9)  
 Positive 12(21.4) 8(21.6) 4(21.1)  
Margin width, cm     0.562
 <  2 15(26.8) 9(24.3) 6(31.6)  
 ≥ 2 41(73.2) 28(75.7) 13(68.4)  
Histological subtype     0.003
 Ordinary 45(80.4) 34(91.9) 11(57.9)  
 Fibrosarcoma 10(17.9) 2(5.4) 8(42.1)  
 Myxoid 1(1.7) 1(2.7) 0(0.0)