Statistical Comparison Between Interview Questions and Rating Scales in Psychiatry

Area of Science:

• Psychiatry
• Psychological Assessment
• Clinical Research

Background:

• Psychiatric evaluations often combine qualitative questions and quantitative assessments.
• The statistical equivalency between these methods for similar issues is not always clear.

Purpose of the Study:

• To investigate the statistical equivalency of close-ended questions in psychiatric examinations and related rating scales.
• To determine if routine clinical questions can serve as reliable alternatives to quantitative scales.

Main Methods:

• Retrospective analysis of 314 new patients at a private psychiatry clinic.
• Comparison of close-ended questions (sleep, sexual, marital, parental, childhood abuse) with standardized scales (Jenkins Sleep Scale, Arizona Sexual Experience Scale, Dyadic Adjustment Scale, Childhood Trauma Questionnaire).
• Utilized receiver operating curve analysis and multinomial logistic regression to assess predictive accuracy and classification values.

Main Results:

• Receiver operating curve analysis showed good predictive criteria for all tested scales, with Jenkins Sleep Scale achieving an area under the curve of 0.920.
• Multinomial logistic regression models demonstrated strong correct classification rates, such as 87.6% for Childhood Trauma Questionnaire-Physical abuse and Childhood Trauma Questionnaire-Sexual abuse.
• The study found significant statistical equivalency between specific clinical questions and their corresponding quantitative scales.

Conclusions:

• Experienced clinicians can rely on qualitative clinical questions as much as quantitative scales for symptom assessment.
• The findings support the use of routine psychiatric questions in both clinical practice and research domains.
• This validates the utility of integrated assessment approaches in psychiatry.