Depression, subthreshold depression and comorbid anxiety symptoms in older Europeans: Results from the EURODEP concerted action

Arjan W Braam, John R M Copeland, Philippe A E G Delespaul, Aartjan T F Beekman, Ariel Como, Michael Dewey, Manfred Fichter, Tjalling J Holwerda, Brian A Lawlor, Antonio Lobo, Hallgrímur Magnússon, Martin J Prince, Friedel Reischies, Kenneth C Wilson, Ingmar Skoog

Research output: Contribution to journalArticlepeer-review

90 Citations (Scopus)

Abstract

Background
In the epidemiology of late life depression, few insights are available on the co-occurrence of subthreshold depression and comorbid symptoms of anxiety. The current study aims to describe prevalence patterns of comorbid anxiety symptoms across different levels of depression in old age, and to describe the burden of depressive symptoms and functional disability across patterns of comorbidity.

Methods
Respondents were older adults in the community, age 65–104 (N=14,200), from seven European countries, with in total nine study centres, collaborating in the EURODEP concerted action. Depression and anxiety were assessed using the Geriatric Mental State examination (GMS-AGECAT package), providing subthreshold level and case-level diagnoses. Presence of anxiety symptoms was defined as at least three distinct symptoms of anxiety. Number of depressive symptoms was assessed with the EURO-D scale.

Results
The prevalence of anxiety symptoms amounts to 32% for respondents without depression, 67% for those with subthreshold depression, and 87% for those with case-level depression. The number of depressive symptoms is similar for those with subthreshold-level depression with comorbid anxiety, compared to case-level depression without symptoms of anxiety. In turn, at case level, comorbid symptoms of anxiety are associated with higher levels of depressive symptoms and more functional disability.

Limitations
GMS-AGECAT is insufficiently equipped with diagnostic procedures to identify specific types of anxiety disorders.

Conclusions
Anxiety symptoms in late life depression are highly prevalent, and are likely to contribute to the burden of symptoms of the depression, even at subthreshold level.
Original languageEnglish
Article numberN/A
Pages (from-to)266-272
Number of pages7
JournalJournal of Affective Disorders
Volume155
Issue numberN/A
DOIs
Publication statusPublished - Feb 2014

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