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Table 2 Laboratory characteristics of the study population (N = 44)

From: Disease evolution in systemic juvenile idiopathic arthritis: an international, observational cohort study through JIRcohort

 

Erythrocyte Sedimentation Rate [mm/h]

C-Reactive Protein [mg/L]

At diagnosis

N = 38

N = 44

 Monophasic (n = 15 / n = 17)

74 (13 – 90)

85.5 (52.6 – 127.2)

 Polyphasic (n = 2 / n = 3)

125 (120 – *)

123 (119 – *)

 Persistent (n = 21 / n = 24)

86 (43.5 – 100)

107 (77.3 – 150)

 p-value

0.564

0.084

6 months after diagnosis

N = 29

N = 37

 Monophasic (n = 13 / n = 17)

8 (4 – 10.5)

2 (0.15 – 8.5)

 Polyphasic (n = 1 / n = 4)

100 (100 – 100)

96.5 (0.4 – 310.5)

 Persistent (n = 15 / n = 16)

11 (5 – 40)

3 (0.9 – 10.8)

 p-value

 < 0.001

 < 0.001

12 months after diagnosis

N = 37

N = 44

 Monophasic (n = 12 / n = 14)

5 (3.25 – 20.5)

0.8 (0.15 – 1.2)

 Polyphasic (n = 4 / n = 5)

14 (4 – 64.5)

1.0 (0.3 – 92)

 Persistent (n = 21 / n = 25)

9 (6 – 43.5)

23.2 (6.9 – 80.5)

 p-value

0.307

0.041

  1. All age and time ranges are reported by median (25th-75th percentiles). *75th percentile could not be calculated with only 2 ESR and 3 CRP values available respectively
  2. P-values are calculated using ANOVA