Table 3.

Data regarding the Cox proportional hazards model

Variables	Univariate analysis		Multivariate analysis
	HR (95%CI)	P value	HR (95%CI)	P value
Age (years)	0.921 (0.846-1.00)	0.0621	0.930 (0.848-1.02)	0.126
Sex
Males	Reference
Females	1.40 (0.312-6.25)	0.661
Growth pattern
Endophytic	Reference
Exophytic	7.15 (1.38-36.9)	0.0189
Tumor size (cm)	1.74 (0.910-3.33)	0.0937	2.46 (0.812-7.43)	0.112
Modified NIH score
Very low risk	Reference		Reference
Low risk	1.91 (0.198-18.34)	0.576	0.268 (0.00917-7.82)	0.444
Intermediate risk	7.71 (0.482-123.38)	0.149	0.463 (0.00730-29.4)	0.716
High risk	14.99 (1.35-165.33)	0.0273	1.20 (0.0239-60.2)	0.928
Resection status
En bloc	0.0563 (0.00624-0.508)	0.0104	0.0179 (0.000655-0.491)	0.0173
Piecemeal	Reference		Reference
Resection method
SR	Reference
EFTR	1.97 (0.434-8.93)	0.38

EFTR: Endoscopic full-thickness resection; SR: Surgical resection; NIH: National Institutes of Health; HR: Hazard ratios.