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Table 2 Univariate and multivariable correlates of exemption from school sports in the 5879 patients recorded in the year 2015

From: Participation in school sports among children and adolescents with juvenile idiopathic arthritis in the German National Paediatric Rheumatologic Database, 2000–2015: results from a prospective observational cohort study

Variable Univariate Multivariable
OR 95% CI P OR 95% CI P
Age 1.11 1.09–1.14 < 0.001 1.09 1.04–1.14 < 0.001
BMI 1.07 1.05–1.10 < 0.001 1.01 0.97–1.05 0.656
Female sex 1.30 1.11–1.52 0.001 1.00 0.78–1.28 1.000
Disease duration 0.99 0.99–1.00 0.049    
Age at disease onset 1.08 1.06–1.10 < 0.001 1.03 1.00–1.06 0.041
RF-positive polyarthritis 1.60 1.13–2.26 0.008 1.25 0.74–2.13 0.407
RF-negative polyarthritis 0.98 0.83–1.16 0.831 0.73 0.55–0.97 0.028
Systemic JIA 0.96 0.71–1.29 0.777 1.44 0.88–2.37 0.147
Persistent oligoarthritis 0.80 0.69–0.92 0.003 1.36 1.07–1.73 0.013
Extended oligoarthritis 1.07 0.88–1.31 0.487 1.29 0.95–1.76 0.097
Psoriatic arthritis 1.16 0.90–1.50 0.248 1.11 0.74–1.65 0.618
Enthesitis-related arthritis 0.85 0.71–1.02 0.075 0.71 0.52–0.96 0.028
cJADAS-10 1.15 1.13–1.17 < 0.001 1.08 1.03–1.13 0.001
PGA score 1.33 1.29–1.38 < 0.001    
Inactive disease* 0.28 0.24–0.33 < 0.001    
No. of joints with active arthritis 1.10 1.08–1.12 < 0.001    
ESR 1.02 1.02–1.03 < 0.001    
C-HAQ total score 1.13 1.11–1.15 < 0.001 1.85 1.39–2.45 < 0.001
No functional limitations† 0.24 0.21–0.28 < 0.001    
Overall well-beingφ 1.30 1.27–1.34 < 0.001    
Pain intensityφ 1.25 1.22–1.28 < 0.001 1.04 0.97–1.11 0.265
Fatigueφ 1.17 .14–1.20 < 0.001 0.97 0.92–1.02 0.235
Copingφ 1.28 1.24–1.32 0.001 1.05 0.98–1.13 0.191
Treatment in past 12 months
 Any systemic GCs     1.35 0.91–2.01 0.137
 Low-dose GCs (< 0.2 mg/kg) 2.06 1.43–2.96 < 0.001    
 Any high-dose GCs (> 0.2 mg/kg)≠ 1.90 1.36–2.67 < 0.001    
 Intra-articular GCs 1.97 1.55–2.51 < 0.001 1.52 1.08–2.15 0.017
 Any DMARD 1.67 1.42–1.97 < 0.001 1.70 1.33–2.19 < 0.001
Parent with academic degree 1.31 1.02–1.67 0.035    
Regular exercise in leisure time (patients aged ≥13)‡ 0.46 0.38–0.57 < 0.001    
Physiotherapy 1.88 1.62–2.18 < 0.001 1.27 1.01–1.60 0.040
Occupational therapy 1.54 1.24–1.92 < 0.001 0.96 0.66–1.39 0.819
No physical therapy 0.55 0.47–0.64 < 0.001    
  1. OR odds ratio, 95% CI 95% confidence interval, RF rheumatoid factor, JIA juvenile idiopathic arthritis, JADAS-10 10-joint Juvenile Arthritis Disease Activity Score, PGA physician’s global assessment, ESR erythrocyte sedimentation rate, C-HAQ Childhood Health Assessment Questionnaire, GCs glucocorticoids, DMARD disease-modifying antirheumatic drug
  2. * Defined by a PGA score of zero
  3. † Defined by a C-HAQ score of zero
  4. φ Assessed on a numerical rating scale (maximum score 10)
  5. ≠ Defined as high dose GCs (≥ 0.2 mg/kg) and/or intravenous pulse therapy
  6. ‡ ‘daily/3–5 times a week/1–2 times a week’ vs. ‘less than once a week/never’
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Pediatric Rheumatology

ISSN: 1546-0096