Endoscopic submucosal dissection for esophageal precancerous lesions and early esophageal carcinoma: Analysis of efficacy and serum tumor markers

Table 1 Comparative analysis of baseline data

Indicators	Control group (n = 60)	Research group (n = 60)	t value	P value
Gender, n (%)			0.352	0.553
Male	43 (71.67)	40 (66.67)
Female	17 (28.33)	20 (33.33)
Age (years)	70.20 ± 6.09	68.20 ± 7.00	1.670	0.098
Disease course (years)	2.70 ± 0.67	2.58 ± 0.67	0.981	0.329
Lesion site, n (%)			0.357	0.836
Upper esophageal segment	20 (33.33)	23 (38.33)
Middle esophageal segment	23 (38.33)	22 (36.67)
Lower esophageal segment	17 (28.33)	15 (25.00)
Family medical history, n (%)			0.745	0.388
Without	48 (80.00)	44 (73.33)
With	12 (20.00)	16 (26.67)