Table 1 Parameter estimates from a structural equation model of joint impairment on functional limitations in RA.
From: A model of impairment and functional limitation in rheumatoid arthritis
Parameter estimates | ||||||
|---|---|---|---|---|---|---|
Direct Paths | Unstandardized | SE | P-value | Standardized | ||
Joint inflammation | → | Functional limitation | -.377 | 0.029 | ≤ 0.001 | -0.576 |
Joint deformity | → | Functional limitation | -0.088 | 0.007 | ≤ 0.001 | -0.564 |
Joint tenderness | → | Joint inflammation | 1.000 | 0.872 | ||
Joint pain | → | Joint inflammation | 0.837 | 0.046 | ≤ 0.001 | 0.758 |
Joint swelling | → | Joint inflammation | 0.445 | 0.034 | ≤ 0.001 | 0.513 |
Upper limb joint deformity | → | Joint deformity | 1.000 | 0.849 | ||
Lower limb joint deformity | → | Joint deformity | 0.478 | 0.029 | ≤ 0.001 | 0.785 |
Other joint deformity | → | Joint deformity | 0.011 | 0.001 | ≤ 0.001 | 0.308 |
Functional limitation | → | Grip strength | 1.000 | 0.773 | ||
Functional limitation | → | Walking velocity | 0.958 | 0.051 | ≤ 0.001 | 0.740 |
Functional limitation | → | Button speed | 0.046 | 0.002 | ≤ 0.001 | 0.757 |
Correlations* | ||||||
Upper extremity deformity | ←→ | Other joint deformity | -0.22 | --- | 0.004 | --- |
Walking velocity | ←→ | Shirt button speed | 0.274 | --- | ≤ 0.001 | --- |