Table 2 Comparison of demographic data and serum and synovial fluid analysis between septic and nonseptic inflammatory arthritis**

Age (years)

72.67

(16.01)

68.87

(15.42)

Sex, Male [% (M:F)]

44.4% (4:5)

43.4% (23:30)

Comorbidity, diabetes

33.3% (3/9)

22.6% (12/53)

Body temperature (°C)

37.03

(0.47)

37.40

(1.03)

Blood tests

 Hb

10.73

(1.40)

11.31

(2.24)

 WBC

13.70

(3.87)

9.85

(3.96)

 Platelets

181.29

(46.72)

260.67

(100.12)

Diff. count of segmental neutrophils (%)

85.16

(8.90)

71.55

(11.86)

 ESR

52.00

39.20

(33.24)

 CRP

20.60

(5.70)

9.50

(6.99)

 Uric acid

4.43

(0.67)

5.33

(2.04)

 Rheumatoid factor

7.25

(2.19)

 Anti-CCP Ab^a

5.60

 PT

12.30

11.42

(1.71)

 PT sec

20.70

(9.76)

12.90

(2.02)

 INR

1.60

(0.74)

1.12

(0.15)

 PT percent

50.55

(31.47)

84.27

(19.68)

Synovial analysis

 Specific gravity

1.02

(0.01)

1.02

(0.01)

 PH

7.75

(0.46)

7.81

(0.53)

 RBC

13119.67

(4466.31)

8939.19

(18730.52)

 WBC

142,778.00

(116,744.85)

48,351.46

(34,370.59)

Synovial biomarkers

 WRS (ng/mL)

773.43

(513.51)

159.17

(191.99)

 α-defensin (ng/mL)

282.11

(71.69)

186.05

(132.83)

 CRP^b

830.74

(209.88)

900.20

(113.60)