Diagnostic accuracy of the Gerontological Personality Disorder Scale (GPS) in Dutch general practice.

Autor:	Penders KA; a Department of Family Medicine , School for Public Health and Primary Care, Maastricht University (UM) , Maastricht , The Netherlands., Rossi G; b Faculty of Psychology & Educational Sciences, Department of Clinical & Lifespan Psychology , Vrije Universiteit Brussel (VUB) , Brussels , Belgium., Metsemakers JF; a Department of Family Medicine , School for Public Health and Primary Care, Maastricht University (UM) , Maastricht , The Netherlands., Duimel-Peeters IG; a Department of Family Medicine , School for Public Health and Primary Care, Maastricht University (UM) , Maastricht , The Netherlands.; c Department of Integrated Care , Maastricht University Medical Centre (MUMC), Maastricht University (UM) , Maastricht , The Netherlands., van Alphen SP; b Faculty of Psychology & Educational Sciences, Department of Clinical & Lifespan Psychology , Vrije Universiteit Brussel (VUB) , Brussels , Belgium.; d Department of Old Age Psychiatry, Mondriaan Hospital , Heerlen-Maastricht , The Netherlands.
Jazyk:	angličtina
Zdroj:	Aging & mental health [Aging Ment Health] 2016; Vol. 20 (3), pp. 318-28. Date of Electronic Publication: 2015 Feb 16.
DOI:	10.1080/13607863.2015.1008989
Abstrakt:	Objective: Personality disorders (PDs) often remain unrecognized in older adults by doctors in general practice. Therefore, this study evaluated the diagnostic accuracy of a screening instrument, the Gerontological Personality Disorder Scale (GPS), in a Dutch general-practice population of older adults. Method: The psychometric properties of the GPS patient (GPS-pv) and informant (GPS-iv) versions were assessed in a sample of 302 (144 male) patients (average age: 69.9 years) and 302 (124 male) informants (average age: 64.7 years), respectively, using an informant-based personality questionnaire (the Hetero-Anamnestische Persoonlijkheidsvragenlijst ) as a reference criterion. Results: The internal consistency (average item correlation) of the subscale and total scores of the GPS-pv and GPS-iv were .12 (HAB), .16 (BIO), and .10 (total); and .16 (HAB), .15 (BIO), and .12 (total), respectively. The test--retest reliability was strong for both the GPS-pv (rs = .56 [HAB], rs = .67 [BIO], rs = .66 [total]) and the GPS-iv (rs = .52 [HAB], rs = .65 [BIO], rs = .68 [total]) versions. The sensitivity and specificity of the GPS-pv were .83 and .27, respectively, with a cutoff score of ≥1. Raising the cutoff score to ≥2, the sensitivity dropped to .59, whereas the specificity rose to .57. For the GPS-iv, a cutoff score of ≥3 maximized the sensitivity (.78) and specificity (.65). Conclusion: The diagnostic accuracy of the GPS-iv was preferable to that of the GPS-pv. This is the first psychometric study to use the GPS as an age-specific screening instrument for PDs.
Databáze:	MEDLINE
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