The Structured Clinical Interview for DSM-III-R (SCID). II. Multisite test-retest reliability

Area of Science:

• Psychiatry
• Psychological Assessment
• Clinical Psychology

Background:

• The Structured Clinical Interview for DSM-III-R (SCID) is a widely used diagnostic tool.
• Assessing the test-retest reliability of diagnostic instruments is crucial for clinical practice and research.

Purpose of the Study:

• To evaluate the test-retest reliability of the Structured Clinical Interview for DSM-III-R across diverse clinical and nonclinical settings.

Main Methods:

• A large-scale study involving 592 subjects across multiple patient and nonpatient sites in the US and Germany.
• Utilized kappa statistics to measure diagnostic agreement for current and lifetime diagnoses.

Main Results:

• High reliability (kappa > .60) was observed for most major diagnostic categories in patient samples (overall weighted kappa: current .61, lifetime .68).
• Lower reliability was found in nonpatient samples (mean kappa: current .37, lifetime .51).
• Findings are comparable to other structured diagnostic instruments.

Conclusions:

• The SCID demonstrates acceptable to good test-retest reliability in patient populations.
• Lower reliability in nonpatients may be influenced by factors such as interviewer training, information variance, and low disorder prevalence.
• Further research into optimizing diagnostic consistency is warranted.