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Reliability, validity and psychometric properties of the Greek translation of the Major Depression Inventory.

Fountoulakis KN, Iacovides A, Kleanthous S, Samolis S, Gougoulias K, Tsiptsios I, Kaprinis GS, Bech P - BMC Psychiatry (2003)

Bottom Line: The test-retest reliability was excellent (Spearman's rho between 0.53 and 0.96 for individual items and 0.89 for total score).The current study provided preliminary evidence concerning the reliability and validity of the Greek translation of the MDI.Its properties are similar to those reported in the international literature, but further research is necessary.

View Article: PubMed Central - HTML - PubMed

Affiliation: 3rd Department of Psychiatry, Aristotle University of Thessaloniki, Greece. kfount@med.auth.gr

ABSTRACT

Background: The Major Depression Inventory (MDI) is a brief self-rating scale for the assessment of depression. It is reported to be valid because it is based on the universe of symptoms of DSM-IV and ICD-10 depression. The aim of the current preliminary study was to assess the reliability, validity and psychometric properties of the Greek translation of the MDI.

Methods: 30 depressed patients of mean age 23.41 (+/- 5.77) years, and 68 controls patients of mean age 25.08 (+/- 11.42) years, entered the study. In 18 of them, the instrument was re-applied 1-2 days later and the Translation and Back Translation made. Clinical diagnosis was reached with the use of the SCAN v.2.0 and the International Personality Disorders Examination (IPDE). The Center for Epidemiological Studies-Depression (CES-D) and the Zung Depression Rating Scale (ZDRS) were applied for cross-validation purposes. Statistical analysis included ANOVA, the Spearman Product Moment Correlation Coefficient, Principal Components Analysis and the calculation of Cronbach's alpha.

Results: Sensitivity and specificity were 0.86 and 0.94, respectively, at 26/27. Cronbach's alpha for the total scale was equal to 0.89. The Spearman's rho between MDI and CES-D was 0.86 and between MDI and ZDRS was 0.76. The factor analysis revealed two factors but the first accounted for 54% of variance while the second only for 9%. The test-retest reliability was excellent (Spearman's rho between 0.53 and 0.96 for individual items and 0.89 for total score).

Conclusion: The current study provided preliminary evidence concerning the reliability and validity of the Greek translation of the MDI. Its properties are similar to those reported in the international literature, but further research is necessary.

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Related in: MedlinePlus

Bivariate scatterplot of the difference between measurements vs average value of measurements concerning the total MDI score. The plot suggests that the total MDI score is a reliable variable. All but 2 of the points of the difference vs. average are within the 2 SD from the mean difference.
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Figure 3: Bivariate scatterplot of the difference between measurements vs average value of measurements concerning the total MDI score. The plot suggests that the total MDI score is a reliable variable. All but 2 of the points of the difference vs. average are within the 2 SD from the mean difference.

Mentions: Also, the means and the standard deviations of the differences concerning each MDI item between test and retest were calculated and the plots of the test vs. retest and difference vs. average value for each variable were created. In fact it is not possible to use statistics to define acceptable agreement [18]. However these plots may assist decision. It is not possible to show all of these plots, but the respected concerning the total MDI score is shown in figures 2 and 3. This method was used in previous studies concerning the validation of scientific methods [22].


Reliability, validity and psychometric properties of the Greek translation of the Major Depression Inventory.

Fountoulakis KN, Iacovides A, Kleanthous S, Samolis S, Gougoulias K, Tsiptsios I, Kaprinis GS, Bech P - BMC Psychiatry (2003)

Bivariate scatterplot of the difference between measurements vs average value of measurements concerning the total MDI score. The plot suggests that the total MDI score is a reliable variable. All but 2 of the points of the difference vs. average are within the 2 SD from the mean difference.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC149454&req=5

Figure 3: Bivariate scatterplot of the difference between measurements vs average value of measurements concerning the total MDI score. The plot suggests that the total MDI score is a reliable variable. All but 2 of the points of the difference vs. average are within the 2 SD from the mean difference.
Mentions: Also, the means and the standard deviations of the differences concerning each MDI item between test and retest were calculated and the plots of the test vs. retest and difference vs. average value for each variable were created. In fact it is not possible to use statistics to define acceptable agreement [18]. However these plots may assist decision. It is not possible to show all of these plots, but the respected concerning the total MDI score is shown in figures 2 and 3. This method was used in previous studies concerning the validation of scientific methods [22].

Bottom Line: The test-retest reliability was excellent (Spearman's rho between 0.53 and 0.96 for individual items and 0.89 for total score).The current study provided preliminary evidence concerning the reliability and validity of the Greek translation of the MDI.Its properties are similar to those reported in the international literature, but further research is necessary.

View Article: PubMed Central - HTML - PubMed

Affiliation: 3rd Department of Psychiatry, Aristotle University of Thessaloniki, Greece. kfount@med.auth.gr

ABSTRACT

Background: The Major Depression Inventory (MDI) is a brief self-rating scale for the assessment of depression. It is reported to be valid because it is based on the universe of symptoms of DSM-IV and ICD-10 depression. The aim of the current preliminary study was to assess the reliability, validity and psychometric properties of the Greek translation of the MDI.

Methods: 30 depressed patients of mean age 23.41 (+/- 5.77) years, and 68 controls patients of mean age 25.08 (+/- 11.42) years, entered the study. In 18 of them, the instrument was re-applied 1-2 days later and the Translation and Back Translation made. Clinical diagnosis was reached with the use of the SCAN v.2.0 and the International Personality Disorders Examination (IPDE). The Center for Epidemiological Studies-Depression (CES-D) and the Zung Depression Rating Scale (ZDRS) were applied for cross-validation purposes. Statistical analysis included ANOVA, the Spearman Product Moment Correlation Coefficient, Principal Components Analysis and the calculation of Cronbach's alpha.

Results: Sensitivity and specificity were 0.86 and 0.94, respectively, at 26/27. Cronbach's alpha for the total scale was equal to 0.89. The Spearman's rho between MDI and CES-D was 0.86 and between MDI and ZDRS was 0.76. The factor analysis revealed two factors but the first accounted for 54% of variance while the second only for 9%. The test-retest reliability was excellent (Spearman's rho between 0.53 and 0.96 for individual items and 0.89 for total score).

Conclusion: The current study provided preliminary evidence concerning the reliability and validity of the Greek translation of the MDI. Its properties are similar to those reported in the international literature, but further research is necessary.

Show MeSH
Related in: MedlinePlus