Article2009

The reliability and validity of operationalized psychodynamic diagnostics system

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Psychological Testing and Assessment Psychoanalysis and Psychopathology Research Personality Disorders and Psychopathology

Abstract

Objective To study the reliability and validity of operationalized psychodynamic diagnositic(OPD-2) Chinese version system.Methods 116 subjects were evaluated after a clinical interview. 66 patients of the subjects were interviewed again with OPD-2 Chinese version after 3-5 weeks. And 33 patients were interviewed by two raters at a time. The construct validities of 3 axes were explored. 50 patients were diagnosed by psychiatrists before the OPD-2 interviews in order to explore the criterion validity of one axis.Results (1)The interrater reliabilities in axis I of OPD-2 Chinese version varied from 0.24 to 0.72,the median Kappa was 0.48;the interrater reliabilities of axis II varied from 0.41 to 0.67,the median Kappa was 0.51;the interrater reliabilities of axis III varied from 0.39 to 0.84,the median Kappa was 0.65;the interrater reliabilities of axis IV varied from 0.42 to 0.60,the median Kappa was 0.51. (2)The test-retest reliability coefficients in axis I of OPD-2 Chinese version were 0.64'0.91,the median Kappa was 0.85; the test-retest reliability coefficients of axis II were 0.84'0.95,the median Kappa was 0.90; the test-retest reliability coefficients of axis III were 0.65'0.91,the median Kappa was 0.81; the test-retest reliability coefficients of axis IV were 0.87'0.98,the median Kappa was 0.93. (3)Factor analysis revealed that 6 initial eigenvalues could explain 70.16% of total square of axis I; factor analysis revealed that 4 initial eigenvalues could explain 51.57% of total square of axis II; agreement on conflict of axis III was good between OPD-2 Chinese version and clinical diagnosis,Kappa was 0.64; factor analysis revealed that 4 initial eigenvalues could explain 79.92% of total square of axis IV.Conclusion Totally,the reliability and validity of OPD-2 Chinese version was satisfying. The OPD-2 Chinese version could be used in clinical practice. Key words: Operationalized psychodynamic diagnositic; Reliability; Validity

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