Skip to main content

Table 1 Model Fit and Selection Criteria for 2 to 7 Latent Classes for Comorbid Posttraumatic Stress Disorder and Major Depressive Disorder

From: Longitudinal trajectories of comorbid PTSD and depression symptoms among U.S. service members and veterans

  2 classes 3 classes 4 classesa 5 classes 6 classes 7 classes
BIC 90,759 89,985 89,612 89,391 89,228 89,089
P from LMR < 0.001 < 0.001 0.010 0.300 0.276 0.240
P from BLRT < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
Entropy 0.854 0.807 0.783 0.779 0.767 0.760
Percentage in class 1 52.7 38.6 31.1 30.0 26.7 24.2
Percentage in class 2 47.3 35.5 26.1 23.0 22.9 16.3
Percentage in class 3   25.9 24.5 17.3 13.4 14.5
Percentage in class 4    18.3 15.7 13.1 12.1
Percentage in class 5     14.0 12.6 12.1
Percentage in class 6      11.4 10.9
Percentage in class 7       9.8
  1. BIC Bayesian information criterion, BLRT bootstrap likelihood ratio test, LMR Lo-Mendell-Rubin adjusted likelihood ratio test
  2. a Selected class solution is bolded