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Table 2 Characteristics of resection, stoma, and stent groups

From: Emergency management with resection versus proximal stoma or stent treatment and planned resection in malignant left-sided colon obstruction

  Acute Staged resection p value
Resection Stoma Stent
n = 57 (%) n = 23 (%) n = 20 (%)
Tumour location     0.094
 Splenic flexure colon 11 (19) 5 (22) 2 (10)  
 Descending colon 7 (12) 7 (30) 2 (10)  
 Sigmoid colon 39 (68) 10 (44) 15 (75)  
 Rectosigmoid colon 0 (0) 1 (4) 1 (5)  
Number of operations 1.1 ± 0.4 2.5 ± 0.5 2.0 ± 0.2 <0.001a
Time between the first surgery and resection (days)   37.2 ± 25.8 40.7 ± 52.4  
Tumour stage     0.084
 pT1 0 (0) 0 (0) 0 (0)  
 pT2 4 (7) 0 (0) 1 (5)  
 pT3 43 (75) 14 (61) 11 (55)  
 pT4 10 (18) 9 (39) 8 (40)  
Lymph node(LN) mean number 8.7 ± 7.9 21 ± 17.4 21 ± 16.1 <0.001b
     <0.001c
 LN ≤12 40 (70) 7 (30) 7 (35)  
 LN >12 12 (23) 16 (70) 13 (65)  
 Missing data 5 (7) 0 (0) 0 (0)  
Number of patients with metastatic LN (total: N1:N2) 25; 15:10 11; 4:7 11; 5:6 0.606
 Missing data 0 2 0  
     0.773
 R0 55 (96) 23 (100) 19 (95)  
 R1 2 (4) 0 (0) 1 (5)  
Number of patients with adjuvant therapy     0.024d
 Yes 8 (14) 10 (43) 4 (20)  
 No 48 (84) 13 (57) 15 (75)  
 Missing data 1 (2) 0 (0) 1 (5)  
Hospital stay (days) mean number
 Total 14.9 ± 8.1 24.1 ± 14.0 14.3 ± 6.8 0.001e
 First operation 13.1 ± 7.6 11.5 ± 7.9 7.5 ± 4.7 0.014f
Surgeon level     0.001g
 Surgical trainee 1 (2) 0 (0) 0 (0)  
 Specialist in general surgery 29 (51) 0 (0) 1 (5)  
 Specialisation in colorectal surgery 27 (47) 23 (100) 19 (95)  
  1. Values in parentheses are percentage unless otherwise indicated. Values are mean ± SD
  2. aNumber of operation; a statistically significant difference observed between the resection group and stoma group p < 0.001, the resection group and stent group p < 0.001, and the stoma group and the stent group p = 0.003
  3. bLymph node mean; a statistically significant difference between resection group and stoma group p < 0.001 as well the stent group p < 0 .001; no significant differences between stoma group and stent group p = 1.000
  4. cLymph node ≤12 and >12; p < 0.01
  5. dAdjuvant therapy; a significant difference between resection group and stoma group, p = 0.024. No statistically significant differences between the resection group and stent group p = 0.486
  6. eTotal hospital stay; a significant between the reference group stoma compared with resection group p = 0.018 and compared with stent group p = 0.015. Reference group resection compared with stent group p = 0.930
  7. fHospital stay at the first operation; a significant difference between the reference group resection and compared with stent group p = 0.010; comparing the resection group and the stoma group shows no statistical significant p = 0.658. No significant between the stoma group and stent group p = 0.164
  8. gSurgeon level; a significance between the resection group and stoma group p = 0.001 as well as between the stent group p = 0.001. No significant between the stoma and stent group p = 0.465