Table 2.
Proportions, Parameter Estimates, and Standard Errors for 7-Class Latent Growth Mixture Model
| Class | Anxiety Trajectory Description |
Number (Proportion)a of Days |
Intercept |
Linear |
Quadratic |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Est. | SE | p | Est. | SE | p | Est. | SE | p | |||
| 1 | Stable Low | 1089 (.714) | 15.92 | .63 | <.001 | 1.10 | .25 | <.001 | −.20 | .05 | <.001 |
| 2 | Stable High | 214 (.140) | 30.79 | 1.46 | <.001 | 1.29 | .45 | .004 | −.24 | .07 | .001 |
| 3 | Late Increasing | 74 (.049) | 17.44 | 1.00 | <.001 | −.95 | .61 | .119 | .59 | .14 | <.001 |
| 4 | Late Decreasing | 66 (.043) | 23.98 | 2.78 | <.001 | 3.60 | 1.81 | .047 | −1.02 | .28 | <.001 |
| 5 | Early Increasing | 38 (.025) | 15.82 | 1.79 | <.001 | 7.32 | 1.05 | <.001 | −.92 | .15 | <.001 |
| 6 | Early Decreasing | 34 (.022) | 28.11 | 2.77 | <.001 | −3.65 | 2.11 | .085 | .19 | .34 | .577 |
| 7 | Inverted U-Shape | 11 (.007) | 12.44 | 3.08 | <.001 | 16.21 | 5.01 | .001 | −3.03 | .86 | <.001 |
Note. Est. = Estimate; SE = Standard Error.
a
Proportions based upon most likely latent class membership