Table 3 Factors associated with disease activity over time among prevalent cases of polyarticular JIA

Age at index visit

0.04

[− 0.09, 0.18]

–

Male sex

0.23

[−1.45, 1.91]

–

 White

–

–

 Black

3.16

[1.00, 5.32]

1.16

[−0.12, 2.44]

 Asian/Other

−0.39

[−2.24, 1.46]

−0.40

[−1.45, 0.65]

 Hispanic ethnicity

−0.99

[−3.54, 1.55]

Public insurance

1.00

[−0.27, 2.26]

0.54

[−0.17, 1.25]

RF positivity

0.36

[−1.57, 2.29]

Baseline cJADAS-10

0.56

[0.49, 0.62]

0.54

[0.47, 0.61]

Non-biologic DMARD use^a

−0.51

[−1.34, 0.32]

Biologic use^a

−1.13

[−2.07, −0.18]

−0.43

[− 1.09, 0.23]

Time (months)

−0.15

[−0.24, − 0.07]

−0.13

[− 0.21, − 0.04]

Time-squared

0.004

[0.001, 0.01]

0.003

[0.001, 0.01]