Matthew Sunderland1, Gavin Andrews, Tim Slade, Lorna Peters. 1. Clinical Research Unit for Anxiety and Depression, University of New South Wales at St. Vincent's Hospital, Level 4, O'Brien Centre, Cnr Victoria Street and Burton Street, Darlinghurst, NSW, 2010, Australia. matthews@unsw.edu.au
Abstract
PURPOSE: The Composite International Diagnostic Interview-Short Form (CIDI-SF) is a short disorder-specific diagnostic interview for 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 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 83 patients attending a tertiary referral clinic for 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 overestimate 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.
PURPOSE: The Composite International Diagnostic Interview-Short Form (CIDI-SF) is a short disorder-specific diagnostic interview for 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 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 83 patients attending a tertiary referral clinic for 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 overestimate 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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