Models # latent class (G) #parameters BIC LMR-LRT Minimal class size 1 (class-specific variance) 2 14 4026.6 <0.001 27.7% 2 (class-specific variance) 3 24 3988.1 0.005 22.6% 3 (class-specific variance) 4 34 3988.6 0.024 6.0% 4 (class-specific variance) 5 44 4006.2 0.092 6.0% 5 (class-specific variance) 6 54 4032.1 <0.001 3.2% 6 (class-specific correlation) 4 38 4006.3 0.576 6.0% 7 (common variance) 4 28 4107.4 <0.001 1.1%

Table 2: Fitting statistics of 7 competing latent class growth models, where Lo-Mendell-Rubin likelihood ratio test (LMR-LRT) compares the improvement in fit between neighboring class models, with a smaller p-value favoring the G-class model over the model with G-1 classes (null hypothesis).