El Hosseiny, W., Abu-Nazel, M., Mahdy, N., Mounir, G. (2004). Validity of the Arabic Version of the Personality Diagnostic Questionnaire [PDQ-4+] in a University Youth Sample. Journal of High Institute of Public Health, 34(2), 437-458. doi: 10.21608/jhiph.2004.189887
Walid W. El Hosseiny; Mervat W. Abu-Nazel; Nehad H. Mahdy; Gehan M. Mounir. "Validity of the Arabic Version of the Personality Diagnostic Questionnaire [PDQ-4+] in a University Youth Sample". Journal of High Institute of Public Health, 34, 2, 2004, 437-458. doi: 10.21608/jhiph.2004.189887
El Hosseiny, W., Abu-Nazel, M., Mahdy, N., Mounir, G. (2004). 'Validity of the Arabic Version of the Personality Diagnostic Questionnaire [PDQ-4+] in a University Youth Sample', Journal of High Institute of Public Health, 34(2), pp. 437-458. doi: 10.21608/jhiph.2004.189887
El Hosseiny, W., Abu-Nazel, M., Mahdy, N., Mounir, G. Validity of the Arabic Version of the Personality Diagnostic Questionnaire [PDQ-4+] in a University Youth Sample. Journal of High Institute of Public Health, 2004; 34(2): 437-458. doi: 10.21608/jhiph.2004.189887
Validity of the Arabic Version of the Personality Diagnostic Questionnaire [PDQ-4+] in a University Youth Sample
1Mental Health, Department of Family Health, High Institute of Public Health, University of Alexandria, Egypt
2Department of Biostatistics, High Institute of Public Health, University of Alexandria, Egypt
3School Health, Department of Family Health, High Institute of Public Health, University of Alexandria, Egypt
Abstract
Because college students are at an age where personality disorders [PDs] become more apparent, posing a burden to themselves, their families and society, a non-costly screening for PDs using a self-report questionnaire is needed in our culture. The aim of the present work was to develop an Arabic version of the Personality Diagnostic Questionnaire-4+ [PDQ-4+] and to test its reliability, validity and psychometric properties among a sample of first grade undergraduate students of the University of Alexandria. Full participants amounted to 1019 and were subjected to the Arabic version of the PDQ-4+ as well as clinical significance scale of the PDQ-4+, both designed to assess the 12 PDs of DSM-IV. The present work has documented that the Arabic version of PDQ-4+ had good psychometric properties as a screening tool for PDs in terms of construct validity, test-retest reliability, and internal consistency, as well as discriminatory and predictive qualities. In addition to the reliability of the tool as measured by the correlation coefficient [r] being excellent [0.97], the internal consistency was high [Cronbach’s alpha =0.87]. On factor analysis, three factors were extracted with eigen values above 1.00; factor 1 included avoidant, dependent, and depressive PDs, factor 2 included antisocial, passive-aggressive, borderline, narcissistic, and histrionic PDs, and factor 3 included schizoid, schizotypal, paranoid, and obsessive-compulsive PDs. The specificity of the tool as a whole to diagnose any PD was estimated to be 97.6%, while its positive predictive power proved to be 95%. The observed agreement and Kappa [K] portray excellent concordance between total PDQ-4+ and clinical significance scales [observed agreement = 98%, K = 0.96, Z = 7.46, P<0.05]. The PDQ-4+ scale significantly discriminated between those who attained a total score below the first quartile and those who attained a total score above the third quartile on the PDQ-4+ scale [12.63 ± 2.85, median = 13.00 vs 37.69 ± 5.76, median = 36.00, W-Z test=18.18, P<0.05].
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