Risk of Bleeding after Colorectal Endoscopic Resection in Patients with Continued Warfarin Use Compared to Heparin Replacement: A Propensity Score Matching Analysis

Table 2

Characteristics of enrolled CRNs.

Variables	Before propensity score matching				value	After propensity score matching				value
	Total ()	Heparin replacement ()	Continued warfarin ()	Standardized difference		Total ()	Heparin replacement ()	Continued warfarin ()	Standardized difference
Tumor location
Colon	143 (89.9)	73 (92.4)	70 (87.5)	0.16	0.43	81 (96.4)	40 (95.2)	41 (97.6)	0.13	1
Rectum	16 (10.1)	6 (7.6)	10 (12.5)			3 (3.6)	2 (4.8)	1 (2.4)
Tumor size, (mm)				0.43	0.006				0.15	0.50
Tumor growth type
Protruded	116 (73.0)	57 (72.2)	59 (73.8)	0.04	0.86	61 (72.6)	29 (69.0)	32 (76.2)	0.16	0.63
Superficial	43 (27.0)	22 (27.8)	21 (26.2)			23 (27.4)	13 (31.0)	10 (23.8)
Resection method
EMR	146 (91.8)	71 (89.9)	75 (93.8)	0.14	0.37	78 (92.9)	38 (90.5)	40 (95.2)	0.18	0.68
ESD	13 (8.2)	8 (10.1)	5 (6.2)			6 (7.1)	4 (9.5)	2 (4.8)
Pathological diagnosis
Adenoma	145 (91.2)	71 (89.9)	74 (92.5)	0.09		79 (94.0)	39 (92.8)	40 (95.2)	0.10
Tis carcinoma	11 (6.9)	6 (7.6)	5 (6.3)	0.05	0.78	3 (3.6)	2 (4.8)	1 (2.4)	0.13	0.84
T1 carcinoma	3 (1.9)	2 (2.5)	1 (1.2)	0.09		2 (2.4)	1 (2.4)	1 (2.4)	0

SD: standard deviation; CRN: colorectal neoplasia; EMR: endoscopic mucosal resection; ESD: endoscopic submucosal dissection.