Table 3.
Parameter estimates for unconditional latent growth curve model for depressive symptoms (n=150).
| Growth parameters | Estimate | SE | P value |
| Slope0→PHQ-90a | 0.000 | 0.000 | —b |
| Slope1→PHQ-91 | 1.000 | 0.000 | — |
| Slope2→PHQ-92 | 1.565 | 0.196 | <.001 |
| Slope3→PHQ-93 | 1.425 | 0.225 | <.001 |
| Mean intercept | 10.157 | 0.370 | <.001 |
| Mean slope | –2.336 | 0.411 | <.001 |
| Variance of intercept | 15.069 | 5.100 | .003 |
| Variance of slope | 5.564 | 3.614 | .12 |
| Covariance of intercept and slope | –4.381 | 3.799 | .25 |
aPHQ-9: Patient Health Questionnaire.
bNot available.