Table 2 The preoperative lab test of the primary TKA patients

Hb (g/L)

128.0 (119.0, 136.0)

130.0 (121.0, 138.0)

0.013^a

PLT (× 10⁹/L)

228.0 (191.3, 268.0)

208.0 (173.25, 247.0)

< 0.001^a

WBC (× 10⁹/L)

0.39 (0.22 to 0.75)

0.34 (0.22 to 0.64)

0.104^a

RBC (× 10⁹/L)

4.29 (3.97 to 4.57)

4.32 (4.04 to 4.60)

0.211^a

Hct (L/L)

0.383 ± 0.038

0.389 ± 0.038

0.019^b

TT (s)

17.0 (16.5, 17.6)

17.0 (16.3, 17.6)

0.591^a

APTT (s)

26.9 (25.4, 28.6)

27.2 (25.7, 29.0)

0.081^a

PT (s)

11.5 (11.1, 12.0)

11.5 (11.1, 12.0)

0.400^a

INR

0.97 (0.94, 1.01)

0.98 (0.95, 1.02)

0.132^a

Fibrinogen (g/L)

3.0 (2.6, 3.4)

3.0 (2.5, 3.49)

0.861^a

D-dimer (μg/mL)

0.39 (0.22, 0.75)

0.34 (0.22, 0.64)

0.093^a