Table 5. Factors influencing outcome.

Variable	Univariate		Multivariate
	Odds Ratio (95 % CI)	P -value	Odds Ratio (95 % CI)	P value
Impact on en bloc resection
Localization Rectum Distal colon Proximal colon	2.70 (1.50 – 4.84) 1.48 (0.72 – 3.03) 0.19 (0.10 – 0.35)	0.001 0.286  < 0.001	2.64 (1.45 – 4.80) 1.55 (0.75 – 3.24) 0.17 (0.01 – 0.34)	0.001 0.24 0.001
Impact on R0 resection
Localization Rectum Distal colon Proximal colon	1.91 (1.16 – 3.16) 0.82 (0.46 – 1.45) 0.47 (0.26 – 0.86)	0.010 0.489 0.013	2.14 (1.27 – 3.62) 0.75 (0.41 – 1.35) 0.44 (0.23 – 0.82)	0.004 0.332 0.011
Size (Area)	0.98 (0.97 – 1.00)	0.066	0.98 (0.96 – 1.00)	0.04
Impact on complications
Localization Rectum Distal colon Proximal colon	0.21 (0.06 – 0.77) 2.11 (0.67 – 6.67) 2.88 (0.90 – 9.16)	0.010 0.195 0.063	0.20 (0.05 – 0.78) 2.30 (0.69 – 7.67) 3.18 (0.86 – 11.78)	0.020 0.175 0.083
Impact on proficiency
	BETA 1	P -value	BETA 1	P value
Localization Rectum Distal colon Proximal colon	0.223 –0.053 –0.224	< 0.001 0.364  < 0.001	0.113 –0.020 –0.124	0.025 0.695 0.015
Macroscopic type Is Iia IIa/Is	0.060 –0.078 0.038	0.302 0.183 0.516	0.145 –0.121 –0.046	0.004 0.017 0.368
Size (Area)	0.526	< 0.001	0.532	< 0.001

¹BETA; standardized regression coefficient, applied for continues variables