Psychometric properties of the state part of the Spielberger State-Trait Anxiety Inventory (STAI) in geriatric patients
Version of Record online: 16 OCT 2001
Copyright © 2001 John Wiley & Sons, Ltd.
International Journal of Geriatric Psychiatry
Volume 16, Issue 10, pages 980–986, October 2001
How to Cite
Kvaal, K., Laake, K. and Engedal, K. (2001), Psychometric properties of the state part of the Spielberger State-Trait Anxiety Inventory (STAI) in geriatric patients. Int. J. Geriat. Psychiatry, 16: 980–986. doi: 10.1002/gps.458
- Issue online: 16 OCT 2001
- Version of Record online: 16 OCT 2001
- Manuscript Accepted: 26 FEB 2001
- Manuscript Received: 23 NOV 2000
- STAI index;
- geriatric patients;
- factor analysis
A conspicuously high score on the state part of the State-Trait Anxiety Inventory (STAI) has been observed among geriatric inpatients who are neither demented nor critically ill; 43% of them had a sumscore that, according to Spielberger's criteria, would reflect clinically relevant anxiety symptoms.
To explore the reasons for this high score.
101 geriatric inpatients and 68 healthy controls of similar age, living at home and recruited through senior citizen centres participated in a controlled cross-sectional study.
High item-scores were more frequent on the symptom-negative items than on the symptom-positive items. Multi-group factor analysis produced two factors termed ‘well-being’ and ‘nervousness’, which had a moderate correlation (0.61). The intercept was much higher on ‘well-being’ than on ‘nervousness’, showing that a lack of well-being contributes significantly to the high score on the STAI. This confounds the sumscore. However, the geriatric inpatients nevertheless had a high score on the factor ‘nervousness’. Female controls scored higher than males on both factors, whereas among the geriatric patients neither age nor gender related to them.
The STAI state sumscore is a biased indicator of anxiety in geriatric inpatients owing to confounding by well-being. The most important cause for the observed high score on the STAI state instrument in geriatric patients relates to a reduced well-being. Copyright © 2001 John Wiley & Sons, Ltd.