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Table 3 Correlates for physical activity in patients with JIA (N = 55)

From: Physical activity in patients with oligo- and polyarticular juvenile idiopathic arthritis diagnosed in the era of biologics: a controlled cross-sectional study

  Univariate Analyses Multiple Regression Analyses
Unstandardized B (95% CI) P-value Unstandardized B (95% CI) P-value
Counts per minute a
 Age −31.5 (− 54.1, − 8.9) 0.007 −25.2 (−46.0, − 4.4) 0.02
 Female sex 100.2 (− 44.7, 245.2) 0.17 20.4 (111.7, 152.4) 0.76
 Participation in organized PA 141.0 (38.7, 243.2) 0.008 105.7 (9.2, 202.2) 0.03
 Use of biologic medication 150.5 (53.5, 247.5) 0.003 117.5 (24.2, 210,7) 0.02
 Disease duration −9.5 (− 22.7, 3.7) 0.15   
 R2 adjusted    0.37  
Vigorous physical activity b
 Age 0.4 (−1.0, 1.9) 0.57 0.5 (−0.9, 1.9) 0.41
 Female sex 7.2 (−0.9, 16.1) 0.08 5.69 (−2.8, 14.2) 0.19
 Participation in organized PA 8.4 (2.3, 14.5) 0.008 7.6 (1.3, 13.9) 0.02
 Use of biologic medication 5.0 (−1.1, 11.2) 0.10   
 Accelerometer wear time 0.03 (−0.04, 0.09) 0.41 0.03 (−0.04, 0.09) 0.41
 R2 adjusted    0.11  
Sedentary time b
 Age 21.2 (14.7, 27.6) < 0.001 17.4 (12.1, 22.6) < 0.001
 Female sex −33.4 (18.6, −85.5) 0.20 −8.9 (−41.0, 23.3) 0.32
 Participation in organized PA −30.2 (−68.5, 8.1) 0.12   
 Use of biologic medication −43.8 (−79.6, −8.0) 0.02 −31.0 (−53.9, − 8.0) 0.01
 Arthritis in lower extremities 46.3 (−2.4, 95.1) 0.06   
 Disease duration 4.0 (−0.7, 8.7) 0.09   
 Accelerometer wear time 0.8 (0.4, 1.1) < 0.001 0.6 (0.4, 0.8) < 0.001
 R2 adjusted    0.65  
  1. JIA juvenile idiopathic arthritis, CI confidence interval, PA physical activity
  2. aResults from the final model of multiple linear regression analysis (method enter) controlled for age and sex. b Results from the final models of multiple linear regression analyses (method enter) controlled for age, sex and accelerometer wear time