Table 1.
Distribution of drug categories.
Table 2.
Psychometric properties of personality factors.
Fig 1.
Histogram of participants’ latent scale score of SUD by the Rasch model.
Table 3.
Descriptive summary of the DSM-5 SUD criteria.
Table 4.
Fixed effects and model comparison results from the explanatory IRT models.
Fig 2.
ICC plots of two example DIF symptoms.
The left panel presents the ICC of “withdrawal”, and the right panel presents the ICC of “social”.
Table 5.
Identified DIF items by each person predictor.