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Table 5 Main laboratory investigations at diagnosis

From: Juvenile idiopathic arthritis in Jordan: single center experience

 

Total n (%) mean (range)

Systemic arthritis n (%) mean (range)

Oligoarticular n (%) mean (range)

Polyarticular n (%) mean (range)

Psoriatic arthritis n (%) mean (range)

ERA n (%) mean (range)

Anemia Hct < 31%

20 (10)

34.6 (23.8–42.5)

7 (19)

34 (23.8–41)

9 (8)

34.6 (23.8–41)

3 (11)

34.7 (32.3–36.3)

1 (5)

36.9 (34.9–41)

0 (0)

36.2 (34.9–42.5)

WBC > 11 X 109/L

35 (16)

10.9 (4.9–39.4)

14 (38)

13.3 (5.7–39.4)

20 (17)

10 (4.9–18.2)

0 (0)

7.5 (7.0–8.3)

0 (0)

9.2 (7.2–11)

1 (6)

9.2 (5.7–12.6)

PLT > 450 X 109/L

32 (15)

421.4 (127–1076)

13 (36)

460 (127–1076)

16 (14)

409 (201–895)

0 (0)

297 (236–356)

1 (5)

387 (285–524)

2 (12)

415 (301–598)

ESR > 20 mm/hour

72 (34)

51 (5–140)

24 (66)

51 (9–140)

39 (34)

50.9 (5–123)

3 (11)

99 (79–128)

1 (5)

35 (22–60)

5 (33)

61.4 (15–100)

CRP > 3 mg/L

69 (32)

37 (0–284)

27 (75)

67 (0–284)

32 (27)

24 (0–283)

3 (11)

75 (48–89.7)

3 (16)

6 (0–6)

4 (26)

19.8 (0–45.8)

ANA

70 (33.3)

3 (8.3)

61 (53)

4 (15)

0

2 (13.3)

RF

8 (3.8)

0

0

8 (30)

0

0

  1. Hct hematocrit, WBC white blood cells, PLT platelets, ESR erythrocyte sedimentation rate, CRP c-reactive protein, ANA antinuclear antibody, RF rheumatoid factor, ERA enthesitis related arthritis