Table 2.
Fit indices for unconditional latent class models of ODD at grades 6 through 9 according to adolescent and parent report
| No. of classes | Adolescent report | Parent report | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Log likelihood | BIC | SSA BIC | Entropy | LMR-LRT | Smallest class size (%) | Log likelihood | BIC | SSA BIC | Entropy | LMR-LRT | Smallest class size (%) | |
| ODD LCA 6th grade | ||||||||||||
| 1 class | −2496.64 | 5043.15 | 5017.75 | – | – | – | −2602.67 | 5255.17 | 5229.78 | – | – | – |
| 2 classes | −2209.77 | 4525.49 | 4471.53 | 0.76 | 0.000 | 35.99% | −2106.45 | 4318.82 | 4264.86 | 0.90 | 0.000 | 28.59% |
| 3 classes | −2154.45 | 4470.94 | 4388.41 | 0.75 | 0.000 | 20.47% | −2039.15 | 4240.30 | 4157.77 | 0.77 | 0.004 | 25.44% |
| 4 classes | −2136.62 | 4491.38 | 4380.29 | 0.75 | 0.494 | 9.65% | −2023.50 | 4265.06 | 4153.97 | 0.78 | 1.000 | 4.42% |
| ODD LCA 7th grade | ||||||||||||
| 1 class | −1898.72 | 3845.29 | 3819.91 | – | – | – | −2067.02 | 4182.10 | 4156.72 | – | – | – |
| 2 classes | −1637.81 | 3377.30 | 3323.36 | 0.77 | 0.000 | 40.06% | −1736.40 | 3574.95 | 3521.01 | 0.82 | 0.000 | 39.97% |
| 3 classes | −1578.72 | 3312.95 | 3230.45 | 0.77 | 0.001 | 20.21% | −1687.09 | 3530.41 | 3447.91 | 0.78 | 0.005 | 21.26% |
| 4 classes | −1567.48 | 3344.30 | 3233.24 | 0.82 | 0.339 | 2.43% | −1677.37 | 3565.06 | 3454.00 | 0.73 | 0.958 | 8.41% |
| ODD LCA 8th grade | ||||||||||||
| 1 class | −1842.88 | 3733.41 | 3708.03 | – | – | – | −2005.42 | 4058.79 | 4033.41 | – | – | – |
| 2 classes | −1581.32 | 3263.89 | 3209.95 | 0.81 | 0.000 | 40.42% | −1734.47 | 3570.84 | 3516.90 | 0.79 | 0.000 | 44.46% |
| 3 classes | −1548.31 | 3251.47 | 3168.97 | 0.71 | 0.529 | 29.18% | −1690.81 | 3537.46 | 3454.96 | 0.75 | 0.005 | 19.68% |
| 4 classes | −1537.91 | 3284.28 | 3173.23 | 0.78 | 1.00 | 15.81% | −1677.99 | 3565.76 | 3454.70 | 0.77 | 0.927 | 10.72% |
| ODD LCA 9th grade | ||||||||||||
| 1 class | −1764.89 | 3577.22 | 3551.84 | – | – | – | −1951.67 | 3951.19 | 3925.81 | – | – | – |
| 2 classes | −1527.54 | 3155.88 | 3101.94 | 0.79 | 0.000 | 33.95% | −1633.49 | 3368.66 | 3314.72 | 0.86 | 0.000 | 34.83% |
| 3 classes | −1480.09 | 3114.36 | 3031.87 | 0.76 | 0.015 | 19.08% | −1599.25 | 3354.01 | 3271.51 | 0.76 | 0.198 | 31.30% |
| 4 classes | −1468.46 | 3144.45 | 3033.40 | 0.75 | 0.242 | 14.31% | −1577.49 | 3364.33 | 3253.28 | 0.78 | 0.238 | 10.94% |
Note. Results from unconditional LCA models (i.e., no covariates included) are presented. ODD = oppositional defiant disorder; LCA = latent class analysis; BIC = Bayesian Information Criterion; SSA BIC = sample size adjusted BIC; LMR-LRT = Lo-Mendell Rubin adjusted likelihood ratio test p-value. Bold indicates best-fitting model.