Skip to main content

Table 2 Median values (IQR) of Disease activity markers and Spearman’s Correlation Coefficient values for Aerobic Capacity (expressed by absolute and relative VO2 peak) (level of significance:* indicates significance < 0.05; ** indicates significance <0.01)

From: Aerobic capacity and disease activity in children, adolescents and young adults with juvenile idiopathic arthritis (JIA)

 

Median (IQR)

Correlation Z-score VO2peak(p -value)

Correlation Z–score VO2peak/kg (p -value)

Number of swollen joints in lower extremities

0.0 (0)

−0.3 (**)

−0.1

number of swollen joints in upper and lower extremities

0.0 (2)

−0.3 (**)

−0.1

Number of painful joints lower extremities

0.0 (2)

−0.1

−0.1

number of painful joints in upper and lower extremities

0.0 (4.0)

−0.2

−0.1

number of limited joints in upper and lower extremities

2.0 (4.0))

−0.3 (*)

−0.3 (*)

Active joint count

0.0 (0)

−0.3 (**)

−0.2

VAS patient

0.5 (2.6)

−0.3 (*)

−0.3 (*)

DAS28

1.6 (1.2)

−0.4 (**)

−0.4 (**)

JADAS 27

2.9 (9.0)

−0.3(**)

−0.4(**)

  1. Abbreviations
  2. IQR: interquartile range, Z-score: standard deviation of the individual patient compared with values from age- and sex- related historical Dutch controls(37); VO2peak abs: highest oxygen uptake in liters of oxygen per minute (l/min) during maximum exercise test in l/min; VO2peak/kgl : highest oxygen uptake in milliliters of oxygen per kilogram of bodyweight per minute (ml/min/kg) during maximum exercise; VAS patient: Visual Analogue Scale of General Health (0-100 mm); DAS28: Disease Activity Score of 28 joints; JADAS 27: Juvenile Arthritis Disease Activity Score of 27 joints.