Cross-sectional study finds dichotomous ratings adequately capture personality disorder traits in psychiatric patients, indicating ICD-11 categorical specifiers are clinically viable.
Key Points
To evaluate whether clinicians can adequately capture variance in ICD-11 personality disorder trait dimensions using dichotomous (present versus absent) single-item ratings compared to dimensional ratings.
Assessed a sample of 238 patients evaluated by their treating clinicians using both dimensional and dichotomous single-item ratings across five ICD-11 trait domains.
Administered the Informant Personality Inventory for ICD-11 (IPiC) completed by clinicians as the standardized criterion measure.
Dichotomous ratings correlated moderately with corresponding IPiC domain scores, except for negative affectivity, which showed a small but statistically significant association.
Dimensional ratings correlated moderately to strongly with IPiC scores and demonstrated statistically significant superiority over dichotomous ratings only for disinhibition and dissociality.