Table 2.
Spearman's correlations of the parent‐ and patient‐reported outcomes with physician's and laboratory measures in EPOCA data sets*
| PhGA | NAJ | SJC | TJC | NLJ | ESR | cJADAS10 | |
|---|---|---|---|---|---|---|---|
| Parent‐reported outcomes | |||||||
| Parent joint count | 0.59 (0.58, 0.61) | 0.56 (0.54, 0.57) | 0.5 (0.48, 0.52) | 0.57 (0.55, 0.58) | 0.41 (0.39, 0.43) | 0.24 (0.22, 0.26) | 0.69 (0.68, 0.71) |
| Morning stiffness | 0.43 (0.41, 0.44) | 0.35 (0.33, 0.37) | 0.32 (0.3, 0.34) | 0.43 (0.42, 0.45) | 0.3 (0.28, 0.32) | 0.17 (0.14, 0.19) | 0.53 (0.51, 0.54) |
| Disease activity VAS | 0.6 (0.58, 0.61) | 0.48 (0.47, 0.5) | 0.43 (0.41, 0.45) | 0.53 (0.51, 0.54) | 0.37 (0.35, 0.39) | 0.24 (0.21, 0.26) | 0.73 (0.72, 0.74) |
| Pain VAS | 0.57 (0.55, 0.58) | 0.45 (0.43, 0.46) | 0.39 (0.37, 0.41) | 0.55 (0.53, 0.56) | 0.35 (0.33, 0.37) | 0.22 (0.19, 0.24) | 0.71 (0.7, 0.73) |
| Well‐being VAS | 0.54 (0.53, 0.56) | 0.43 (0.41, 0.45) | 0.38 (0.36, 0.39) | 0.5 (0.48, 0.52) | 0.35 (0.33, 0.36) | 0.22 (0.2, 0.24) | 0.82 (0.82, 0.83) |
| Patient‐reported outcomes | |||||||
| Patient joint count | 0.58 (0.56, 0.59) | 0.52 (0.5, 0.54) | 0.46 (0.44, 0.48) | 0.58 (0.56, 0.6) | 0.37 (0.35, 0.39) | 0.21 (0.18, 0.24) | 0.68 (0.66, 0.69) |
| Morning stiffness | 0.42 (0.4, 0.45) | 0.35 (0.33, 0.37) | 0.31 (0.29, 0.33) | 0.43 (0.41, 0.45) | 0.27 (0.25, 0.3) | 0.15 (0.13, 0.18) | 0.52 (0.5, 0.54) |
| Disease activity VAS | 0.59 (0.57, 0.6) | 0.47 (0.45, 0.49) | 0.41 (0.39, 0.44) | 0.53 (0.51, 0.55) | 0.34 (0.32, 0.36) | 0.21 (0.19, 0.24) | 0.71 (0.7, 0.72) |
| Pain VAS | 0.56 (0.54, 0.58) | 0.43 (0.41, 0.45) | 0.37 (0.34, 0.39) | 0.54 (0.52, 0.56) | 0.33 (0.31, 0.35) | 0.2 (0.17, 0.22) | 0.7 (0.68, 0.71) |
| Well‐being VAS | 0.53 (0.51, 0.55) | 0.41 (0.39, 0.44) | 0.36 (0.34, 0.39) | 0.5 (0.48, 0.52) | 0.32 (0.29, 0.34) | 0.21 (0.18, 0.24) | 0.71 (0.7, 0.73) |
*
Values are the correlation (95% confidence interval). cJADAS10 = clinical Juvenile Arthritis Disease Activity Score in 10 joints; EPOCA = Epidemiology Treatment and Outcome of Childhood Arthritis; ESR = erythrocyte sedimentation rate; NAJ = number of joints with active arthritis; NLJ = number of joint with limitation on motion; PhGA = physician global assessment of overall disease activity; SJC = swollen joint count; TJC = tender joint count; VAS = visual analog scale.