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Validity and reliability of the Geriatric Anxiety Inventory in Parkinson's disease
Article first published online: 29 DEC 2010
© 2010 The Authors. Australasian Journal on Ageing © 2010 ACOTA
Australasian Journal on Ageing
Volume 31, Issue 1, pages 13–16, March 2012
How to Cite
Matheson, S. F., Byrne, G. J., Dissanayaka, N. N., Pachana, N. A., Mellick, G. D., O'Sullivan, J. D., Silburn, P. A., Sellbach, A. and Marsh, R. (2012), Validity and reliability of the Geriatric Anxiety Inventory in Parkinson's disease. Australasian Journal on Ageing, 31: 13–16. doi: 10.1111/j.1741-6612.2010.00487.x
[Correction added after online publication 29 Dec 2010: Author affiliation details for Nancy A Pachana]
- Issue published online: 14 MAR 2012
- Article first published online: 29 DEC 2010
- anxiety disorder;
- Geriatric Anxiety Inventory;
- Parkinson's disease;
- psychiatric status rating scales
Aim: To examine the psychometric properties of a novel anxiety rating scale, the Geriatric Anxiety Inventory (GAI) in Parkinson's disease (PD).
Method: The predictive validity of the GAI was tested against the presence of any DSM-IV anxiety disorders in 58 PD patients using receiver operating curve analysis. The concurrent validity of this scale was also studied against the state half of the Spielberger State Trait Anxiety Inventory (STAI). The internal consistency and test–retest reliability of the GAI were also examined.
Results: The GAI displayed good concurrent validity against the STAI and the DSM-IV. It also showed good internal consistency and test–retest reliability.
Conclusions: This study suggested that the GAI is an appropriate scale to use in non-demented PD patients.