Table 2.
Fit indices for latent growth mixture models (LGMM) for psychopathological symptoms, COVID-19-related rumination, and stress-related growth.
| Class number | Max LL | AIC | SSBIC | Entropy | BLRT p | % smallest class |
|---|---|---|---|---|---|---|
| Psychopathological symptoms (linear slopes) | ||||||
| 1 | −26879.34 | 53782.69 | 53806.38 | – | – | – |
| 2 | −25994.30 | 52024.60 | 52060.13 | 0.76 | <0.001 | 33.6% |
| 3 | −25776.24 | 61600.48 | 51647.86 | 0.73 | <0.001 | 20.9% |
| 4* | −25706.15 | 51472.31 | 51531.53 | 0.69 | <0.001 | 16.7% |
| 5 | −25690.03 | 51452.06 | 51523.13 | 0.73 | 0.267 | 2.0% |
| COVID-19-related rumination (linear slopes) | ||||||
| 1 | −23634.14 | 47290.27 | 47311.99 | – | – | – |
| 2 | −23276.22 | 46586.44 | 46674.00 | 0.77 | <0.001 | 47.7% |
| 3 | −23076.20 | 46198.40 | 46243.80 | 0.73 | <0.001 | 12.2% |
| 4* | −23004.74 | 46067.48 | 46124.73 | 0.72 | <0.001 | 10.4% |
| 5a | −22981.87 | 46033.75 | 46102.85 | 0.64 | <0.001 | 10.3% |
| 6a | −22968.30 | 46018.60 | 46099.54 | 0.61 | 0.118 | 10.3% |
| Stress-related growth (quadratic and linear slopes) | ||||||
| 1 | −20979.81 | 41987.63 | 42015.27 | – | – | – |
| 2* | −20807.57 | 41663.14 | 41710.52 | 0.45 | <0.001 | 17.7% |
| 3 | −20786.94 | 41641.87 | 41709.00 | 0.47 | 0.667 | 8.7% |
| 4 | −20807.57 | 41703.14 | 41790.00 | 0.73 | 1.00 | <1% |
| 5a | −20703.38 | 41514.75 | 41621.36 | 0.64 | <0.001 | 2.0% |
% smallest class = percentage of respondents in the smallest class.
Max LL maximized log likelihood value, AIC Akaike information criteria, SSBIC sample-size-adjusted Bayesian information criterion, BLRT parametric bootstrapped likelihood ratio test.
*Selected model.
aProblems with model convergence.