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Gayan Perera · SciRah

Researcher profile · Semantic Scholar

Gayan Perera

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Gayan Perera — researcher profile on SciRah

h-index: 29
Works: 116
Citations: 5,245

Most-cited papers

Prevalence of Cerebral Amyloid Pathology in Persons Without Dementia
W. Jansen, R. Ossenkoppele, D. Knol, B. Tijms +125 more
2015Journal of the American Medical Association (JAMA)1,520 citations Open access
Semantic Scholar
Cohort profile of the South London and Maudsley NHS Foundation Trust Biomedical Research Centre (SLaM BRC) Case Register: current status and recent enhancement of an Electronic Mental Health Record-derived data resource
Gayan Perera, M. Broadbent, F. Callard, Chin-Kuo Chang +13 more
2016BMJ Open504 citations Open access
Semantic Scholar
Association of Cerebral Amyloid-β Aggregation With Cognitive Functioning in Persons Without Dementia
W. Jansen, R. Ossenkoppele, B. Tijms, A. Fagan +115 more
2017JAMA psychiatry142 citations Open access
Semantic Scholar
Accuracy of general hospital dementia diagnoses in England: Sensitivity, specificity, and predictors of diagnostic accuracy 2008–2016
A. Sommerlad, Gayan Perera, A. Singh-Manoux, G. Lewis +2 more
2018Alzheimer's & Dementia131 citations Open access
Semantic Scholar
Polypharmacy in people with dementia: Associations with adverse health outcomes
C. Mueller, M. Molokhia, Gayan Perera, N. Veronese +5 more
2018Experimental Gerontology99 citations Open access
Semantic Scholar
Hospitalization in people with dementia with Lewy bodies: Frequency, duration, and cost implications
C. Mueller, Gayan Perera, A. P. Rajkumar, Manorama Bhattarai +5 more
2017Alzheimer's & Dementia73 citations Open access
Semantic Scholar
Reporting of clinically diagnosed dementia on death certificates: retrospective cohort study
Gayan Perera, R. Stewart, I. Higginson, K. Sleeman
2016Age and Ageing68 citations Open access
Semantic Scholar
Predictors of emergency department attendance by people with dementia in their last year of life: Retrospective cohort study using linked clinical and administrative data
K. Sleeman, Gayan Perera, R. Stewart, Irene J. Higginson
2018Alzheimer's & Dementia67 citations Open access
Semantic Scholar
Predictors of Falls and Fractures Leading to Hospitalization in People With Dementia: A Representative Cohort Study.
Shalini Sharma, C. Mueller, R. Stewart, N. Veronese +5 more
2018Journal of the American Medical Directors Association65 citations Open access
Semantic Scholar
Hospitalisation of people with dementia: evidence from English electronic health records from 2008 to 2016
A. Sommerlad, Gayan Perera, C. Mueller, A. Singh-Manoux +3 more
2019European Journal of Epidemiology62 citations Open access
Semantic Scholar
Associations of acetylcholinesterase inhibitor treatment with reduced mortality in Alzheimer's disease: a retrospective survival analysis
C. Mueller, Gayan Perera, R. Hayes, H. Shetty +1 more
2018Age and Ageing57 citations Open access
Semantic Scholar
Dementia prevalence and incidence in a federation of European Electronic Health Record databases: The European Medical Informatics Framework resource
Gayan Perera, L. Pedersen, D. Ansel, M. Alexander +13 more
2018Alzheimer's & Dementia53 citations Open access
Semantic Scholar
Risk of Dementia in Parkinson's Disease: A Systematic Review and Meta‐Analysis
L. Gibson, Daniel Weintraub, Roos Lemmen, Gayan Perera +3 more
2024Movement Disorders51 citations Open access
Semantic Scholar
Antipsychotic use in dementia: the relationship between neuropsychiatric symptom profiles and adverse outcomes
C. Mueller, Christeena John, Gayan Perera, D. Aarsland +2 more
2020European Journal of Epidemiology51 citations Open access
Semantic Scholar
Associations of centrally acting ACE inhibitors with cognitive decline and survival in Alzheimer’s disease
K. Fazal, Gayan Perera, M. Khondoker, R. Howard +1 more
2017BJPsych Open50 citations Open access
Semantic Scholar
Methotrexate and relative risk of dementia amongst patients with rheumatoid arthritis: a multi-national multi-database case-control study
D. Newby, D. Prieto-Alhambra, T. Duarte-Salles, D. Ansell +14 more
2019Alzheimer's Research & Therapy41 citations Open access
Semantic Scholar
Predictors of falls and fractures leading to hospitalization in people with schizophrenia spectrum disorder: A large representative cohort study.
B. Stubbs, C. Mueller, F. Gaughran, J. Lally +6 more
2018Schizophrenia Research40 citations Open access
Semantic Scholar
The Incidence of Recorded Delirium Episodes Before and After Dementia Diagnosis: Differences Between Dementia With Lewy Bodies and Alzheimer's Disease.
J. FitzGerald, Gayan Perera, Alexandra Chang-Tave, A. Price +7 more
2019Journal of the American Medical Directors Association38 citations Open access
Semantic Scholar
The relationship between polypharmacy and trajectories of cognitive decline in people with dementia: A large representative cohort study
P. Soysal, Gayan Perera, A. Işık, G. Onder +10 more
2019Experimental Gerontology35 citations Open access
Semantic Scholar
Associations of Neuropsychiatric Symptoms and Antidepressant Prescription with Survival in Alzheimer's Disease.
C. Mueller, J. Huntley, B. Stubbs, A. Sommerlad +4 more
2017Journal of the American Medical Directors Association34 citations Open access
Semantic Scholar
The anticholinergic effect on cognition (AEC) scale—Associations with mortality, hospitalisation and cognitive decline following dementia diagnosis
Delia Bishara, Gayan Perera, D. Harwood, David Taylor +3 more
2020International Journal of Geriatric Psychiatry31 citations Open access
Semantic Scholar
Centrally Acting Anticholinergic Drugs Used for Urinary Conditions Associated with Worse Outcomes in Dementia.
Delia Bishara, Gayan Perera, D. Harwood, David Taylor +4 more
2021Journal of the American Medical Directors Association30 citations
Semantic Scholar
Loneliness in older adult mental health services during the COVID‐19 pandemic and before: Associations with disability, functioning and pharmacotherapy
F. Greig, Gayan Perera, K. Tsamakis, R. Stewart +2 more
2021International Journal of Geriatric Psychiatry30 citations Open access
Semantic Scholar
Predictors of mortality in people with late-life depression: A retrospective cohort study.
Wa Cai, C. Mueller, H. Shetty, Gayan Perera +1 more
2020Journal of Affective Disorders29 citations Open access
Semantic Scholar
Body mass index and mortality in patients with schizophrenia spectrum disorders: a cohort study in a South London catchment area
Jianhua Chen, Gayan Perera, H. Shetty, M. Broadbent +2 more
2022General Psychiatry24 citations Open access
Semantic Scholar
Motor signs in Alzheimer's disease and vascular dementia: Detection through natural language processing, co-morbid features and relationship to adverse outcomes.
Ahmed Al-Harrasi, Ehtesham Iqbal, K. Tsamakis, Judista Lasek +9 more
2021Experimental Gerontology24 citations
Semantic Scholar
Dementia in People from Ethnic Minority Backgrounds: Disability, Functioning, and Pharmacotherapy at the Time of Diagnosis.
K. Tsamakis, R. Gadelrab, Mimi Wilson, Anne M. Bonnici-Mallia +6 more
2020Journal of the American Medical Directors Association22 citations Open access
Semantic Scholar
Benefits and Harms of Statins in People with Dementia: A Systematic Review and Meta‐Analysis
K. Davis, Delia Bishara, Gayan Perera, M. Molokhia +2 more
2020Journal of The American Geriatrics Society22 citations Open access
Semantic Scholar
Late-life depression in people from ethnic minority backgrounds: Differences in presentation and management.
Rand Mansour, K. Tsamakis, E. Rizos, Gayan Perera +3 more
2020Journal of Affective Disorders21 citations
Semantic Scholar
Associations between loneliness and acute hospitalisation outcomes among patients receiving mental healthcare in South London: a retrospective cohort study
Mayur S. Parmar, Rui-Min Ma, Sumudu Attygalle, C. Mueller +3 more
2021Social Psychiatry and Psychiatric Epidemiology20 citations Open access
Semantic Scholar
What gets recorded, counts: dementia recording in primary care compared with a specialist database
K. Davis, C. Mueller, M. Ashworth, M. Broadbent +4 more
2021Age and Ageing20 citations Open access
Semantic Scholar
Predictors of mortality for people aged over 65 years receiving mental health care for delirium in a South London Mental Health Trust, UK: a retrospective survival analysis
G. Ward, Gayan Perera, R. Stewart
2015International Journal of Geriatric Psychiatry20 citations Open access
Semantic Scholar
Clinical factors associated with progression to dementia in people with late-life depression: a cohort study of patients in secondary care
Georgia Peakman, N. Karunatilake, Mathieu Seynaeve, Gayan Perera +3 more
2020BMJ Open19 citations Open access
Semantic Scholar
Unsupervised Machine Learning to Identify Depressive Subtypes
Benson Kung, Maurice Chiang, Gayan Perera, M. Pritchard +1 more
2022Healthcare Informatics Research15 citations Open access
Semantic Scholar
The association between dementia severity and hospitalisation profile in a newly assessed clinical cohort: the South London and Maudsley case register
U. Gungabissoon, Gayan Perera, N. Galwey, R. Stewart
2020BMJ Open14 citations Open access
Semantic Scholar
Effect of trazodone on cognitive decline in people with dementia: Cohort study using UK routinely collected data
A. Sommerlad, N. Werbeloff, Gayan Perera, Tanya Smith +8 more
2021International Journal of Geriatric Psychiatry13 citations Open access
Semantic Scholar
Centrally-acting anticholinergic drugs– associations with mortality, hospitalisation and cognitive decline following dementia diagnosis in people receiving antidepressant and antipsychotic drugs
Delia Bishara, Gayan Perera, D. Harwood, David Taylor +5 more
2021Aging & Mental Health12 citations Open access
Semantic Scholar
Vascular and metabolic risk factor differences prior to dementia diagnosis: a multidatabase case–control study using European electronic health records
Gayan Perera, P. Rijnbeek, M. Alexander, D. Ansell +10 more
2020BMJ Open12 citations Open access
Semantic Scholar
Identifying subtypes of depression in clinician-annotated text: a retrospective cohort study
Benson Kung, Maurice Chiang, Gayan Perera, M. Pritchard +1 more
2021Scientific Reports11 citations Open access
Semantic Scholar
Aspirin in people with dementia, long-term benefits, and harms: a systematic review
K. Davis, Delia Bishara, M. Molokhia, C. Mueller +2 more
2021European Journal of Clinical Pharmacology11 citations Open access
Semantic Scholar
A prospective investigation of depression and adverse outcomes in patients undergoing vascular surgical interventions: A retrospective cohort study using a large mental health database in South London
Sajini Kuruppu, Marvey Ghani, M. Pritchard, M. Harris +3 more
2021European psychiatry11 citations Open access
Semantic Scholar
Associations between recorded loneliness and adverse mental health outcomes among patients receiving mental healthcare in South London: a retrospective cohort study
Mayur Parmar, Rui-Min Ma, Sumudu Attygalle, Maaheshi Deepika Herath +4 more
2024Social Psychiatry and Psychiatric Epidemiology10 citations Open access
Semantic Scholar
Annual Report of the Chief Medical Officer 2015: On the State of the Public’s Health Baby Boomers: Fit for the Future
Gayan Perera
201710 citations
Semantic Scholar
Potentially avoidable causes of hospitalisation in people with dementia: contemporaneous associations by stage of dementia in a South London clinical cohort
U. Gungabissoon, Gayan Perera, N. Galwey, R. Stewart
2022BMJ Open9 citations Open access
Semantic Scholar
A Profile of Black and Latino Older Adults Receiving Care in Nursing Homes: 2011-2017.
Jasmine L. Travers, A. Dick, Bei Wu, D. Grabowski +4 more
2022Journal of the American Medical Directors Association9 citations Open access
Semantic Scholar
Predictors of hospital readmission for patients diagnosed with delirium: An electronic health record data analysis
M. Friedrich, Gayan Perera, Lisa Leutgeb, David Haardt +3 more
2022Acta Psychiatrica Scandinavica9 citations Open access
Semantic Scholar
An investigation of neuropsychiatric symptoms, contextual factors, and antidepressant treatment as risk factors for dementia development in people with mild cognitive impairment
Ruth Willmott, Isobel Martin West, Paul M. B. Yung, Vidya Giri Shankar +4 more
2024International Journal of Geriatric Psychiatry8 citations Open access
Semantic Scholar
Predictors of falls and fractures leading to hospitalisation in 36 101 people with affective disorders: a large representative cohort study
Rui-Min Ma, Gayan Perera, Eugenia Romano, D. Vancampfort +4 more
2022BMJ Open8 citations Open access
Semantic Scholar
The association between an early diagnosis of dementia and secondary health service use
E. Couch, C. Mueller, Gayan Perera, Vanessa C. Lawrence +1 more
2021Age and Ageing8 citations Open access
Semantic Scholar
Vascular surgery receipt and outcomes for people with serious mental illnesses: Retrospective cohort study using a large mental healthcare database in South London.
Marvey Ghani, Sajini Kuruppu, M. Pritchard, M. Harris +3 more
2021Journal of Psychosomatic Research8 citations Open access
Semantic Scholar

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