Development and validation of a prediction model for deep vein thrombosis in older non-mild acute pancreatitis patients

Table 1 Demographic characteristics

Variables	NDVT	DVT	P value
N	140	80
Age	69.81 (7.52)	70.16 (7.84)	0.745
Gender: Female	81 (57.9)	49 (61.3)	0.726
Etiology
Biliary	65 (47.4)	39 (48.8)
Alcohol	3 (0.21)	5 (0.62)
Hyperlipidemia	23 (16.4)	10 (12.5)
Others	49 (35.0)	26 (32.5)
Smoking	37 (26.4)	17 (21.2)	0.507
Drink	33 (23.6)	15 (18.8)	0.487
Surgery times			< 0.001
0	114 (81.4)	47 (58.8)
1	24 (17.1)	23 (28.7)
2	2 (1.4)	6 (7.5)
3	0 (0.0)	4 (5.0)
Any organ failure	72 (51.4)	67 (83.8)	< 0.001
Respiratory failure	61 (43.6)	58 (72.5)	< 0.001
Renal failure	15 (10.7)	31 (38.8)	< 0.001
Cardiovascular failure	23 (16.4)	37 (46.2)	< 0.001
Classification			< 0.001
Moderate to severe	95 (67.9)	28 (35.0)
Severe	45 (32.1)	52 (65.0)
Blood index
Blood culture positive	8 (5.7)	20 (25.0)	< 0.001
D-dimer	5.87 (5.48)	8.78 (6.47)	0.002
CRP	120.77 (84.66)	124.51 (86.79)	0.796
WBC	11.09 (4.37)	11.74 (4.63)	0.312
Neutrophils	9.05 (4.08)	9.87 (4.48)	0.177
Serum albumin	32.90 (4.13)	31.25 (4.31)	0.006

NDVT: None deep vein thrombosis; DVT: Deep vein thrombosis; CRP: C-reactive protein; WBC: White blood cell.

Table 2 The location of deep vein thrombosis

Location of the thrombosis	Number of patients (n = 80)
Left upper limb isolated	3 (3.7%)
Right upper limb isolated	6 (7.5%)
Both upper limbs	4 (5.0%)
Left lower limb isolated	14 (17.5%)
Right lower limb isolated	10 (12.5%)
Both lower limbs	31 (38.8%)
More than two locations	12 (15.0%)

Table 3 Odds ratio and 95% confidence interval of nomogram parameters

Variables	OR (95%CI)	P value
Age	1.02 (0.983-1.066)	0.257
Gender	1.23 (0.625-2.431)	0.546
Surgery times	2.70 (1.566-4.651)	0.000
Renal failure	0.35 (0.166-0.728)	0.005
Classification	2.17 (1.133-4.164)	0.020
D-dimer	1.02 (0.971-1.081)	0.382
Blood culture	0.53 (0.218-1.267)	0.152
Neutrophils	1.01 (0.930-1.087)	0.887