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Clinical factors associated with progression to dementia in people with late-life depression: a cohort study of patients in secondary care

Peakman, G; Karunatilake, N; Seynaeve, M; Perera, G; Aarsland, D; Stewart, R; Mueller, C; (2020) Clinical factors associated with progression to dementia in people with late-life depression: a cohort study of patients in secondary care. BMJ Open , 10 (5) , Article e035147. 10.1136/bmjopen-2019-035147. Green open access

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Abstract

OBJECTIVES: Depression can be a prodromal feature or a risk factor for dementia. We aimed to investigate which clinical factors in patients with late-life depression are associated with a higher risk of developing dementia and a more rapid conversion. DESIGN: Retrospective cohort study. SETTING: South London and Maudsley NHS Foundation Trust (SLaM) secondary mental healthcare services. PARTICIPANTS: The SLaM Clinical Record Interactive Search was used to retrieve anonymised data on 3659 patients aged 65 years or older who had received a diagnosis of depression in mental health services and had been followed up for at least 3 months. OUTCOME MEASURES: Predictors of development of incident dementia were investigated, including demographic factors, health status rated on the Health of the National Outcome scale for older people (HoNOS65+), depression recurrence and treatments including psychotropic drugs and cognitive behavioural therapy (CBT). RESULTS: In total, 806 (22.0%) patients developed dementia over a mean follow-up time of 2.7 years. Significant predictors of receiving a dementia diagnosis in fully adjusted models and after accounting for multiple comparisons were older age (adjusted HR=1.04, 95% CI 1.03 to 1.06 per year difference from sample mean) and the HoNOS65+ subscale measuring cognitive problems (HR=4.72, 95% CI 3.67 to 6.06 for scores in the problematic range). Recurrent depressive disorder or past depression (HR=0.65, 95% CI 0.55 to 0.77) and the receipt of CBT (HR=0.73 95% CI 0.61 to 0.87) were associated with a lower dementia risk. Over time, hazards related to age increased and hazards related to cognitive problems decreased. CONCLUSIONS: In older adults with depression, a higher risk of being subsequently diagnosed with dementia was predicted by higher age, new onset depression, severity of cognitive symptoms and not receiving CBT. Further exploration is needed to determine whether the latter risk factors are responsive to interventions.

Type: Article
Title: Clinical factors associated with progression to dementia in people with late-life depression: a cohort study of patients in secondary care
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.1136/bmjopen-2019-035147
Publisher version: https://doi.org/10.1136/bmjopen-2019-035147
Language: English
Additional information: This is an open access article distributed in accordance with the Creative Commons Attribution 4.0 Unported (CC BY 4.0) license, which permits others to copy, redistribute, remix, transform and build upon this work for any purpose, provided the original work is properly cited, a link to the licence is given, and indication of whether changes were made. See: https://creativecommons.org/licenses/by/4.0/.
Keywords: dementia, depression & mood disorders, geriatric medicine, mental health
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Neurodegenerative Diseases
URI: https://discovery.ucl.ac.uk/id/eprint/10100210
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