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Table 5 Disease characteristics in relation to level and pattern of physical activity

From: Reduced physical activity in children and adolescents with Juvenile Idiopathic Arthritis despite satisfactory control of inflammation

  Mean cpm Minutes per day spent at >1500 cpm Minutes per day spent at >3000 cpm (HPA)
Subgroup of JIA F = 0.794 F = 0.927 F = 1.349
Analysis of variance p = 0.531 p = 0.450 p = 0.255
Remission vs non-remission F = 0.057 F = 0.369 F = 0.148
Analysis of variance p = 0.811 p = 0.544 p = 0.701
Treatmenta F = 0.502 F = 1.127 F = 0.199
Analysis of variance p = 0.607 p = 0.328 p = 0.820
Disease duration β = 0.27 β = 0.005 β = 0.077
Linear regression p = 0.758 p = 0.957 p = 0.376
Number of active joints β = − 0.104 β = − 0.119 β = − 0.153
Linear regression p = 0.235 p = 0.171 p = 0.078
Physician global VAS rho = − 0.60 rho = − 0.062 rho = − 0.105
Spearman correlation p = 0.489 p = 0.476 p = 0.228
Patient/parent global VAS rho = − 0.072 rho = − 0.062 rho = − 0.018
Spearman correlation p = 0.416 p = 0.487 p = 0.841
CRP β = − 0.050 β = − 0.079 β = − 0.149
Linear regression p = 0.591 p = 0.393 p = 0.107
JADAS 27 β = − 0.085 β = − 0.093 β = − 0.134
Linear regression p = 0.340 p = 0.294 p = 0.144
Number of active weight-bearing joints β = − 0.074 β = − 0.069 β = − 0.213
Linear regression p = 0.400 p = 0.432 p = 0.014b
Number of joints with limited motion only β = 0.054 β = 0.073 β = 0.105
Linear regression p = 0.535 p = 0.405 p = 0.229
Tendinitis and/or enthesitis 473 vs. 455 68 vs. 63 27 vs. 26
T-test p = 0.600 p = 0.402 p = 0.330
Pain VAS rho = − 0.018 rho = − 0.002 rho = − 0.026
Spearman correlation p = 0.841 p = 0.985 p = 0.775
CHAQ rho = − 0.066 rho = − 0.065 rho = − 0.086
Spearman correlation p = 0.457 p = 0.465 p = 0.334
  1. aTreatment: either only intra-articular steroid injection or only methotrexate or biologicals with or without methotrexate
  2. bSignificance (p) is given as two-tailed and α selected as 0.05