Impact of depressive symptoms on the rate of progression to dementia in patients affected by mild cognitive impairment. The Italian Longitudinal Study on Aging
Article first published online: 10 JAN 2008
Copyright © 2008 John Wiley & Sons, Ltd.
International Journal of Geriatric Psychiatry
Volume 23, Issue 7, pages 726–734, July 2008
How to Cite
Panza, F., Capurso, C., D'Introno, A., Colacicco, A. M., Zenzola, A., Menga, R., Pistoia, G., Santamato, A., Scafato, E., Gandin, C., Capurso, A. and Solfrizzi, V. (2008), Impact of depressive symptoms on the rate of progression to dementia in patients affected by mild cognitive impairment. The Italian Longitudinal Study on Aging. Int. J. Geriat. Psychiatry, 23: 726–734. doi: 10.1002/gps.1967
- Issue published online: 24 JUN 2008
- Article first published online: 10 JAN 2008
- Manuscript Accepted: 6 NOV 2007
- Manuscript Received: 3 AUG 2007
- Italian Longitudinal Study on Aging (ILSA)
- Italian National Research Council. Grant Numbers: 9400419PF40, 95973PF40
- Alzheimer's disease;
- mild cognitive impairment;
- cardiovascular risk factors;
- cerebrovascular disease
Mild cognitive impairment (MCI) is often a prodromal of dementia and depressive symptoms have been suggested as risk factor for dementing disorders. We evaluated the possible impact of depressive symptoms on the rate of progression to dementia in MCI patients after a 3.5-year follow-up; and the interaction between depressive symptoms and vascular risk factors for conversion to dementia.
A total of 2,963 individuals from a sample of 5,632 65–84 year old subjects were evaluated at the first (1992–1993), and second survey (1995–1996) of the Italian Longitudinal Study on Aging (ILSA), a prospective cohort study. MCI and dementia were classified using current clinical criteria. Depressive symptoms were measured with the Geriatric Depression Scale.
Among the 2,963 participants, 139 prevalent MCI patients were diagnosed at the first survey. During the 3.5-year follow-up, 14 MCI patients progressed to dementia, and we did not find any significant relationship between depressive symptoms and rate of progression to dementia (RR 1.42, 95% CI, 0.48–4.23, χ2 0.40, p < 0.53). No socio-demographic variables or vascular risk factors modified the association between depressive symptoms and conversion to dementia.
In our population, depressive symptoms were not associated with the rate of progression to dementia in MCI patients. Our findings did not support a role of socio-demographic variables or vascular risk factors in the association of depressive symptoms and conversion to dementia. Copyright © 2008 John Wiley & Sons, Ltd.