Table 4.

Aim 2: coagulation and inflammatory factor levels compared before and after knee arthroscopy

Reference rangeMean (SD)*Mean change (95% CI)
PreoperativePostoperative
All patients (N = 729) 
 FVIII activity (%) 50%-150% 123.4 (28.0) 114.3 (35.8) −9.0 (−11.1 to −7.0) 
 FIX activity (%) 65%-135% 123.2 (21.9) 110.3 (21.7) −12.9 (−13.9 to −11.9) 
 FXI activity (%) 65%-140% 112.5 (20.7) 101.1 (21.0) −11.4 (−12.6 to −10.3) 
 VWF antigen (%) 50%-150% 140.7 (39.2) 133.3 (40.7) −7.2 (−8.6 to −5.8) 
 Fibrinogen (mg/dL) 200-393 mg/dL 309.4 (72.3) 277.4 (67.4) −32.0 (−34.6 to −29.5) 
 D-dimer (ng/mL)* <500 ng/mL 218.5 (204.4-233.6)* 207.7 (196.0-220.1)* −51.3 (−86.3 to −16.2) 
Random subset (N = 80) 
 IL-6 (pg/mL) <10 pg/mL    
 ≤8 pg/mL  N = 52 N = 52 NA 
 >8 pg/mL  N = 28 N = 28 −34.5 (−63.9 to −5.1) 
Random subset (N = 70) 
 TF (pg/mL) <62.2 pg/mL 42.2 (9.3) 39.0 (8.5) −3.3 (−4.1 to −2.4) 
Random subset (N = 28) 
 cfDNA (μg/mL) <1.14 μg/mL 0.9 (0.1) 0.9 (0.1) −0.1 (−0.1 to 0.0) 
 MPO-DNA (ng/mL)* <0.64 ng/mL 0.1 (0.1-0.1)* 0.1 (0.1-0.1)* 0.0 (0.0- 0.1) 
Reference rangeMean (SD)*Mean change (95% CI)
PreoperativePostoperative
All patients (N = 729) 
 FVIII activity (%) 50%-150% 123.4 (28.0) 114.3 (35.8) −9.0 (−11.1 to −7.0) 
 FIX activity (%) 65%-135% 123.2 (21.9) 110.3 (21.7) −12.9 (−13.9 to −11.9) 
 FXI activity (%) 65%-140% 112.5 (20.7) 101.1 (21.0) −11.4 (−12.6 to −10.3) 
 VWF antigen (%) 50%-150% 140.7 (39.2) 133.3 (40.7) −7.2 (−8.6 to −5.8) 
 Fibrinogen (mg/dL) 200-393 mg/dL 309.4 (72.3) 277.4 (67.4) −32.0 (−34.6 to −29.5) 
 D-dimer (ng/mL)* <500 ng/mL 218.5 (204.4-233.6)* 207.7 (196.0-220.1)* −51.3 (−86.3 to −16.2) 
Random subset (N = 80) 
 IL-6 (pg/mL) <10 pg/mL    
 ≤8 pg/mL  N = 52 N = 52 NA 
 >8 pg/mL  N = 28 N = 28 −34.5 (−63.9 to −5.1) 
Random subset (N = 70) 
 TF (pg/mL) <62.2 pg/mL 42.2 (9.3) 39.0 (8.5) −3.3 (−4.1 to −2.4) 
Random subset (N = 28) 
 cfDNA (μg/mL) <1.14 μg/mL 0.9 (0.1) 0.9 (0.1) −0.1 (−0.1 to 0.0) 
 MPO-DNA (ng/mL)* <0.64 ng/mL 0.1 (0.1-0.1)* 0.1 (0.1-0.1)* 0.0 (0.0- 0.1) 
*

Geometric means (with 95% CIs) and mean ratios of ln-retransformed data.

Number of patients per category of IL-6 is given instead of means. Mean change could only be calculated for detectable levels (>8 pg/mL).

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