Table 3.
Fit Indices and Class Statistics of Growth Mixture Models for Subjective Anxiety, Respiratory Frequency, and Panic Symptoms (upper). The Percent of Participants Falling into Cross-tabulated Subjective Anxiety and Panic Symptoms Latent Class Trajectory Cells (lower).
| # of Classes | # of params | BIC | Δ BIC | LL | VLMR | LMR | BLRT | Entropy |
|---|---|---|---|---|---|---|---|---|
| Subjective Anxiety-SUDS | ||||||||
| 1 | 28 | 24188.71 | ----- | −12011.12 | ----- | ----- | ----- | |
| 2 | 31 | 24121.83 | 66.88 | −11968.76 | .019 | .023 | .0000 | .93 |
| 3* | 34 | 24069.92 | 51.91 | −11933.89 | .010 | .012 | .0000 | .84 |
| 4 | 37 | 24055.78 | 14.14 | −11917.90 | .529 | .531 | .0000 | .78 |
| Respiratory Frequency-fR | ||||||||
| 1* | 23 | 10423.05 | ----- | −5146.28 | ----- | ----- | ----- | ----- |
| 2 | 26 | 10299.30 | 123.75 | −5075.90 | .36 | .38 | .0000 | .84 |
| 3¥ | ----- | ----- | ----- | ----- | ----- | ----- | ----- | ----- |
| Panic Symptoms-DSQ | ||||||||
| 1 | 12 | 8862.31 | ----- | −4396.53 | ----- | ----- | ----- | ----- |
| 2* | 15 | 8736.28 | 126.03 | −4324.85 | .022 | .027 | .0000 | .90 |
| 3 | 18 | 8609.29 | 126.99 | −4252.70 | .004 | .005 | .0000 | .93 |
| 4 | 21 | 8596.74 | 12.55 | −4237.77 | .236 | .249 | .0000 | .92 |
| Panic Symptom (DSQ) Latent Class Trajectories | ||||
|---|---|---|---|---|
| C1 Moderate Panic Sxs | C2 Acute Panic Sxs | |||
| Subjective Anxiety (SUDS) Latent Class Trajectories (percent) | C1-Low Anxiety | 70.0 | 5.5 | |
| C2-Acute Anxiety | 17.9 | 1.6 | ||
| C3-High Anxiety | 3.6 | 1.3 | ||
Note: SUDS=Subjective Units of Distress Scale; Params=Parameters; BIC=Bayesian Information Criterion; LL=Log likelihood; VLMR=Vuong-Lo-Mendell-Rubin Likelihood Ratio Test; LMR= Lo-Mendell-Rubin Adjusted Likelihood Ratio Test; BLRT=Bootstrap; Likelihood Ratio Test; SUDS=Subjective Units of Distress Scale; DSQ=Diagnostic Symptom Questionnaire; Sxs=Symptoms; C1=Class 1; C2=Class 2; C3=Class 3
*
Best fitting model
¥
Model did not converge.