Table 2 Comparison of the clinical characteristics, preoperative laboratory values, and perioperative data among the 3 groups stratified by the grade of blood loss, as determined by the ATLS hypovolemic shock classification system

 Age (years)

32 (19 to 67)

32 (19 to 59)

34 (22 to 53)

0.449 ^c

 Male (n, %)

37 (75.5%)

110 (90.9%)

71 (97.3%)

< 0.0001^a

 BMI (kg/m²)

21.83 (11.87 to 36.73)

22.76(15.06 to 36.98)

23.39 (15.22 to 37.11)

0.078 ^c

 Disease duration (years)

10 (0.5 to 40.3)

10.5 (1.0 to 30.0)

14 (0.5 to 34)

0.114 ^c

 Bilateral THA (n, %)

8 (16.3%)

84 (69.4%)

71 (97.3%)

< 0.0001^a

 Hip ROM = 0° (n, %)

10 (20.4%)

60 (49.6%)

51 (69.9%)

< 0.0001^a

 BASRI-hip score of 4 (n, %)

16 (32.7%)

68 (56.2%)

55 (75.3%)

< 0.0001^a

 Elevated level of ESR (n, %)

23(46.9%)

75(62.0%)

34(46.6%)

0.058^a

 Elevated level of CRP (n, %)

31 (63.3%)

89 (73.6%)

45 (61.6%)

0.168^a

 TT (s)

15.7 ± 0.8

16.2 ± 1.0

16.2 ± 1.0

0.013^b

 APTT (s)

40.6 ± 4.8

41.4 ± 4.7

38.7 ± 4.9

0.001^b

 PT (s)

13.6 ± 0.8

13.5 ± 0.8

13.4 ± 0.9

0.206^b

 PT (%)

93.2 ± 11.3

93.9 ± 11.9

96.1 ± 12.7

0.346^b

 INR

1.06 ± 0.08

1.05 ± 0.08

1.03 ± 0.08

0.219^b

 Fibrinogen level (g/L)

4.04 (2.42 to 7.41)

4.45 (1.90 to 13.10)

4.06 (1.76 to 6.16)

0.014^c

 Platelet level (× 10⁹/L)

270 ± 67

289 ± 77

249 ± 58

0.001^b

 Hb level (g/L)

127 ± 15

131 ± 16

140 ± 16

< 0.0001^b

 Hct (L/L)

0.386 ± 0.041

0.401 ± 0.042

0.423 ± 0.041

< 0.0001^b

 Iliopsoas and adductor release (n, %)

2 (4.1%)

23 (19.0%)

16 (21.9%)

0.024^a

 Administration of TXA (n, %)

40 (81.6%)

77 (63.6%)

42 (57.5%)

< 0.0001^a

 Chemoprophylaxis of thrombosis (n, %)

30(61.2%)

97(80.2%)

56(76.7%)

0.033^a

 Operating time (min)

100 (55 to 250)

180 (60 to 335)

210 (70 to 455)

< 0.0001^c

 Autologous transfusion (n, %)

3 (6.1%)

30 (24.8%)

33 (45.2%)

< 0.0001^a

 Allogenic transfusion (n, %)

37 (75.5%)

119 (98.3%)

73 (100%)

N/A

 ASA class

0.672^a

  1

5

6

4

  2

40

105

65

  3

4

10

4