Measuring the level of diagnostic concordance and discordance between modules of the CIDI-Short Form and the CIDI-Auto 2.1

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Purpose: The Composite International Diagnostic Interview- Short Form (CIDI-SF) is a short disorder-specific diagnostic interview for the common mental disorders. Many researchers have been attracted to the CIDI-SF because of its brevity and cost-effectiveness. As a result the CIDI-SF has been used in multiple epidemiological studies and clinical trials. Despite the widespread use, a search of the literature has revealed relatively few validation studies. This investigation aims to provide estimates of concordance and discordance between the CIDI-SF disorder modules and the full CIDI as well as providing evidence regarding the potential screening utility of the CIDI-SF. Methods: The sample comprised of 83 patients attending a tertiary referral clinic for the anxiety disorders. Patients were administered the CIDI-SF and the full CIDI-Auto and estimates of agreement between the two measures were calculated. Interview transcripts were examined for cases that disagreed on a diagnosis to elicit a likely reason for the lack of agreement between the two measures. Finally, the screening properties of the dimensionally scored CIDI-SF were calculated and compared with the Depression Anxiety Stress Scale. Results: The CIDI-SF tended to over-estimate the rate of diagnoses as evidenced by a high degree of false positives. However, the CIDI-SF exhibited favorable screening properties (ruling out non-disordered cases). Conclusions: These results suggest that caution must be taken when using the CIDI-SF as the sole diagnostic instrument in epidemiological research to estimate prevalence and incidence. The CIDI-SF may be more useful for screening out potential candidates in clinical research and psychopharmacological trials.
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Sunderland, Matthew Martyn
Andrews, Gavin
Slade, Tim
Peters, Lorna
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Journal Article
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UNSW Faculty
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