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|
Factor
|
Positive
|
Negative
|
p value
|
|---|
|
Deep vein thrombosis
|
15
|
74
| |
|
Gender
|
Male
|
4
|
7
|
0.085*a
|
|
Female
|
11
|
67
|
|
Age (years)
|
< 65
|
2
|
19
|
0.592**
|
|
≥ 65 to < 75
|
12
|
33
|
|
≥ 75
|
1
|
22
|
|
Body mass index (kg/m2)
|
< 25
|
3
|
33
|
0.021**a
|
|
≥ 25 to < 30
|
8
|
35
|
|
≥ 30
|
4
|
6
|
|
Type of anesthesia
|
Epidural
|
3
|
35
|
0.084*a
|
|
General
|
12
|
39
|
|
Hypertension
|
+
|
12
|
44
|
0.156*a
|
|
–
|
3
|
30
|
|
Diabetes
|
+
|
3
|
19
|
0.754*
|
|
–
|
12
|
55
|
|
Hypercholesterolemia
|
+
|
3
|
7
|
0.363*
|
|
–
|
12
|
67
|
|
Prothrombin time/international normalized ratio
|
< 0.95
|
4
|
27
|
0.877**
|
|
≥ 0.95 to < 1.00
|
5
|
20
|
|
≥ 1.00 to < 1.05
|
4
|
16
|
|
≥ 1.05
|
2
|
11
|
- *Fisher’s exact test
- **Pearson’s chi-square test
- aSignificant relationship in single-variable analysis (p < 0.2)
