Table 2 Multivariate analyses of risk factors associated with DVT after ankle fracture surgeries

Age (increase of every 10 years)

1.44 (1.14 to 1.81)

0.002

Preoperative stay (delay of each day)

1.11 (1.02 to 1.21)

0.014

Anesthesia (general vs regional)

3.51 (1.73 to 7.13)

0.001

HGB < lower limit

2.02 (0.93 to 4.41)

0.078

TC (> 5.2 mmol/L)

3.20 (1.44 to 7.09)

0.004

Reduced LYM count (< 1.8 × 10⁹/L)

3.16 (1.55 to 6.41)

0.001