Clinical value of predicting bleeding after endoscopic submucosal dissection for early esophageal cancer

Table 1 Comparison of clinical data between the two groups of patients

Factors	Bleeding group (n = 29)	Non-bleeding group (n = 149)	t/χ2	P value
Age (years)	61.21 ± 12.35	60.55 ± 11.56	0.277	0.782
Sex, n (%)			0.035	0.852
Male	16 (55.17)	85 (57.15)
Female	13 (44.83)	6442.95
Diabetes, n (%)			1.074	0.300
Yes	6 (20.69)	45 (30.20)
No	23 (79.31)	104 (69.80)
History of chronic kidney disease, n (%)			1.542	0.214
Yes	6 (20.69)	18 (12.08)
No	23 (79.31)	131 (87.92)
Preoperative anemia, n (%)			0.013	0.910
Yes	5 (17.24)	27 (18.12)
No	24 (82.76)	122 (81.88)
Tumor size [cm; n (%)]			12.010	< 0.001
< 3	10 (34.48)	47 (31.54)
≥ 3	19 (65.52)	102 (68.46)
Infiltration depth, n (%)			1.717	0.424
M1	26 (89.66)	122 (81.88)
M2	3 (10.34)	20 (13.42)
M3	0 (0.00)	74.70
Tumor location, n (%)			0.656	0.720
Upper esophagus	10 (34.48)	41 (27.52)
Middle esophagus	5 (17.24)	32 (21.48)
Lower esophagus	14 (48.28)	76 (51.00)
Tumor morphology, n (%)			2.675	0.263
Uplift	13 (44.83)	84 (56.38)
Depression	13 (44.83)	59 (39.60)
Flat	3 (10.34)	6 (4.03)
Intraoperative bleeding, n (%)			6.622	0.010
Yes	8 (27.59)	17 (11.41)
No	21 (72.41)	132 (88.59)
Operation time (minute)	50.10 ± 3.32	49.22 ± 2.95
Postoperative anticoagulant use, n (%)			0.543	0.461
No	17 (58.62)	98 (65.77)
Yes	12 (41.38)	51 (34.23)