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Table 2 Factors influencing lymph node yield (univariate analysis)

From: The effect of preoperative chemoradiotherapy on lymph nodes harvested in TME for rectal cancer

Parameters Lymph node SD P
Total 13.6 7.3  
Age (years):    0.50
<60 (23) 14.5 8.1  
>60 (88) 13.3 7.1  
Sex:    0.79
Male (63) 13.7 7.1  
Female (48) 13.4 7.6  
Tumor site:    0.24
Middle (45) 14.6 7.6  
Lower (66) 12.9 7.1  
Tumor grade:    0.0003
G1 (5) 13.2 6.8  
G2 (76) 14.1 7.3  
G3 (10) 19.7 7.0  
Gx (20) 8.4 3.7  
Stage:    0.005
0 (7) 11.7 5.4  
I (31) 12 6.4  
II (22) 15.5 8.3  
III (39) 15.8 7.3  
X (12) 7.9 4.5  
Type of surgery:    0.65
Low anterior resection (76) 13.4 7.0  
Abdominalperineal resection (35) 14.0 7.08  
Surgical approach:    0.02
Open (38) 15.8 8.3  
Laparoscopy (73) 12.4 6.4  
Neoadjuvant:    0.006
No (61) 15.3 7.7  
Yes (50) 11.5 6.5  
Surgeons:    0.18
1 (23) 16.3 10.3  
2 (16) 13.6 7.3  
3 (26) 14.0 5.3  
4 (18) 13 6.7  
5 (28) 11.3 5.8  
Pathologists:    0.20
1 (60) 12.9 6.2  
2 (31) 14.0 7.6  
3 (10) 10.6 5.6  
4 (10) 16.8 8.1