| Null model | Model II | Model III | Model IV |
---|---|---|---|---|
Random effect result | ||||
 ICC (%) | 34% | 24.4% | 20.8% | 18.7% |
 PCV (%) | Reference | 37.3% | 49% | 55.6% |
 MOR | 3.5 | 2.7 | 2.4 | 2.3 |
Model fit statistics | ||||
 Log-likelihood | − 1078.19 | − 924.53861 | − 1007.379 | − 893.4072 |
 AIC | 2160.381 | 1895.077 | 2060.757 | 1872.814 |
 DIC | 2156.28 | 1849.0782 | 200.758 | 1786.8144 |