| AIC | Akaike information criterion |
| aBIC | Sample size adjusted BIC |
| BIC | Bayesian information criterion |
| BLRT | Bootstrapped likelihood ratio test |
| CI | Confidence Interval |
| CLHLS | Chinese Longitudinal Healthy Longevity Survey |
| C1 | Depression–sleep disturbance group |
| C2 | Moderated depression–forcefulness group |
| C3 | Major depression–loneliness loss group |
| LMR | Lo–Mendell–Rubin likelihood ratio test |
| LCA | Latent Class Analysis |
| LCM | Latent Class Model |
| LPA | Latent Profile Analysis |
| OR | Odds Ratio |