Table 3.

Correlations and comparisons of postoperative D‐dimer levels according to clinical and pathological factors

		POD1		POD4		POD7
	n		P‐value		P‐value		P‐value
Age at operation	169	R = 0.261a	.001	R = 0.214a	.005	R = 0.199a	.009
Gender
Male	103	3.05 (1.87‐6.35)	.935	3.37 (2.09‐5.86)	.437	3.43 (2.16‐5.94)	.652
Female	66	3.03 (1.91‐6.36)		3.07 (2.02‐5.57)		3.28 (1.95‐5.53)
Tumor site
Colon/rectosigmoid	129	3.32 (1.97‐6.48)	.115	3.14 (2.09–5.86)	.807	3.41 (2.19‐6.07)	.56
Rectum	40	2.61 (1.76‐5.09)		3.30 (2.03‐5.42)		3.43 (1.65‐5.57)
Pathological stage
0‐I	53	2.43 (1.51‐4.93)	.061	2.77 (1.87‐5.16)	.048	2.84 (1.53‐4.05)	.012
II‐IV	116	3.31 (2.16‐6.48)		3.35 (2.19‐6.31)		3.56 (2.39‐6.25)
Duration of operation	169	R = 0.025a	.745	R = 0.088a	.255	R = 0.073a	.345
Intraoperative bleeding	169	R = 0.307a	<.001	R = 0.485a	<.001	R = 0.515a	<.001
Preoperative anticoagulant therapy
Not performed	159	3.01 (1.85‐6.13)	.216	3.20 (2.07‐5.86)	.522	3.41 (1.98‐5.69)	.374
Ceased	10	4.72 (2.63‐5.92)		3.42 (2.63–5.92)		3.77 (2.50‐7.38)
Postoperative anticoagulant therapy
Not performed	27	6.71 (2.00‐12.85)		3.74 (2.69‐8.99)		5.41 (3.28‐15.8)
Incomplete	5	4.85 (1.84‐5.37)	.106	3.75 (2.08‐4.90)	0.058	3.55 (1.72‐6.29)	.002
Completed	137	2.99 (1.86‐5.76)		3.09 (2.05‐5.45)		3.18 (1.87‐5.03)
Postoperative SSI
Absent	152	3.12 (1.86‐6.30)	.948	3.20 (2.06‐5.90)	0.983	3.34 (1.96‐65.91)	.255
Present	17	2.69 (2.10‐6.51)		3.20 (2.36‐4.41)		3.71 (3.21‐5.21)
Postoperative VTE
Absent	167	3.03 (1.87‐6.31)	.203	3.16 (2.08‐5.79)	0.088	3.42 (2.12‐5.63)	.311
Present	2	6.89 (5.72‐8.05)		12.4 (5.45‐18.64)		15.24 (3.18‐27.30)
Preoperative DD level	169	R = 0.454a	<.001	R = 0.411a	<.001	R = 0.475a	<.001

Note: Unless otherwise indicated, values show medians (interquartile ranges).

Abbreviations: DD, D‐dimer; POD, postoperative day; SSI, surgical‐site infection; VTE, venous thromboembolism.

^aSperman's rank correlation.