Table 3.
Longitudinal Regression Model for Outcome: Stage of Change
Effect | b | se | t | p |
---|---|---|---|---|
Intercept Stage 2 | 1.43 | 1.73 | .82 | .41 |
Intercept Stage 3 | 6.19 | 1.84 | 3.36 | .00 |
Intercept Stage 4 | 3.29 | 1.74 | 1.90 | .06 |
Intercept Stage 5 | −.02 | 1.73 | −.01 | .99 |
TR dose | .04 | .10 | .38 | .71 |
TR Condition (Phone or No phone reinforcement) | −.09 | .33 | −.26 | .80 |
Maintenance Treatment Arm (Negotiated-Mainstreamed) | −.28 | .33 | −.85 | .40 |
Timepoint (baseline,2,6,12,18 months) | −.02 | .07 | −.33 | .74 |
Sex | .33 | .33 | 1.02 | .31 |
Education | .07 | .11 | .70 | .49 |
Race | .17 | .47 | .36 | .72 |
Income | −.04 | .08 | −.55 | .58 |
Age | .02 | .02 | 1.16 | .25 |
Arthritis functional class | −.43 | .24 | −1.85 | .07 |
Body mass index (BMI) | −.41 | .16 | −2.65 | .01 |
Arthritis | −.20 | .51 | −.40 | .69 |
High blood pressure | .13 | .24 | .55 | .58 |
Vision problems | .02 | .22 | .11 | .91 |
Diabetes | −.02 | .27 | −.08 | .94 |
Interactions | ||||
TR Condition* Maintenance Treatment Arm | .41 | .48 | .87 | .39 |
TR Condition * Timepoint | .16 | .08 | 1.93 | .06a |
Maintenance Treatment Arm * Timepoint | .18 | .07 | 2.46 | .02 |
TR Condition * Maintenance Treatment Arm * Timepoint | −.27 | .10 | −2.77 | .01 |
Log likelihood | 10,655.30b | |||
Iterations | 32 | |||
Covariance Parameter Estimates | b | se | ||
Intercept | 1.412300 | .315800 | ||
Timepoint | .003918 | .005793 |
Note.
Not significant (borderline)
Convergence criteria satisfied