Table 2.
Parameter estimates (SE) of models predicting SSc patient pain over time
| Parameters | Model 1: intercept | Model 2: linear growth | Models 3–5: conditional models
|
||
|---|---|---|---|---|---|
| Null | Disease duration | Medical | Psychosocial | Biopsychosocial | |
| Fixed effects | |||||
| Intercept (γ00) | 51.42 (1.40)*** | 46.03 (2.26)*** | 42.50 (3.03)*** | 46.04 (1.87)*** | 48.04 (2.59)*** |
| Slope (γ10) | 1.72 (.57)** | 2.45 (.77)*** | 1.66 (.52)** | 1.55 (.71)* | |
| Disease type (γ01) | 8.82 (4.49)* | −5.10 (4.23) | |||
| Emotional health (γ02) | .32 (.10)*** | .32 (.10)*** | |||
| Perceived health (γ03) | .51 (.07)*** | .54 (.08)*** | |||
| Health worry (γ04) | −1.14 (1.34) | −1.30 (1.37) | |||
| Social support (γ05) | −.45 (1.49) | −.82 (1.56) | |||
| Type × duration (γ11) | −1.80 (1.17) | .36 (1.15) | |||
| Emotional × duration (γ12) | −.03 (.03) | −.04 (.03) | |||
| Perceived × duration (γ13) | −.04 (.02)* | −.04 (.02)† | |||
| Worry × duration (γ14) | .06 (.35) | .05 (.35) | |||
| Social × duration (γ15) | .70 (.39)† | .74 (0.41)† | |||
| Variance components | |||||
| Residual (rti) | 286.07 (30.19)*** | 281.22 (29.67)*** | 279.11 (29.20)*** | 265.14 (27.92)*** | 264.79 (27.97)*** |
| Intercept (τ00) | 449.20 (45.25)*** | 436.60 (65.25)*** | 434.44 (65.54)*** | 199.33 (45.39)*** | 192.46 (44.82)*** |
| Slope (τ11) | .61 (4.45) | .63 (4.41) | 2.12 (3.16) | 2.44 (3.19) | |
| Model summary | |||||
| AIC | 5698.87 | 5684.75 | 5684.96 | 5179.64 | 5181.06 |
| sBIC | 5702.64 | 5691.01 | 5693.74 | 5195.07 | 5198.86 |
Regression coefficient symbols in the parameters column (i.e., γ01–γ15) reflect the terms for the biopsychosocial model; Disease type was coded as 0 = diffuse, 1 = limited;
†
p ≤.07,
*
p < .05,
**
p < .01,
***
p ≤ .001