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Table 4 Results of joint-level multivariable multilevel modelling

From: Plantar plate pathology is associated with erosive disease in the painful forefoot of patients with rheumatoid arthritis

Multivariable multilevel binary logistic regression: Odds ratio (95% CI), sig.

Dependent variable

Plantar plate pathology

Larsen >1

Subluxation present

Callus present

RhF positive

1.98 (0.63 to 6.23), p = 0.243

1.19 (0.13 to 10.56), p = 0.879

4.99 (0.19 to 134.46), p = 0.339

1.46 (0.28 to 7.71), p = 0.652

Disease duration (months)

1.05 (0.99 to 1.12), p = 0.118

1.26 (1.09 to 1.46), p = 0.002

1.15 (0.96 to 1.38), p = 0.119

1.08 (0.99 to 1.18), p = 0.083

Plantar plate pathology present

-

52.50 (8.38 to 326.97), p < 0.001

1.77 (0.45 to 6.95), p = 0.410

1.04 (0.34 to 3.11), p = 0.951

Between-patient variance

1.01 (0.27 to 3.75)

4.16 (1.12 to 15.47)

13.61 (5.03 to 36.81)

1.93 (0.49 to 7.54)

Multivariable multilevel linear regression: Percent change (95% CI), sig.

Dependent variable

Peak pressure (standard model)

Peak pressure (extended model)

RhF positive

22.63 (−5.17 to 50.44), p = 0.111

15.16 (−12.00 to 42.31), p = 0.274

Disease duration (months)

0.29 (−1.23 to 1.81), p = 0.709

−0.50 (−2.10 to 1.11), p = 0.544

Plantar plate pathology present

−17.47 (−37.67 to 2.74), p = 0.090

−23.11 (−45.08 to −1.14), p = 0.039

Larsen > 1

-

2.30 (−23.34 to 27.95), p = 0.860

Subluxation present

-

49.48 (27.41 to 71.55), p < 0.001

Variance

 Between-patient

0.05 (0.01 to 0.18), 12.5% of total

0.05 (0.02 to 0.17), 14.3% of total

 Within-patient

0.35 (0.27 to 0.45), 87.5% of tota

0.30 (0.24 to 0.39), 85.7% of total