Karen Ritchie

73.3k total citations · 5 hit papers
416 papers, 24.2k citations indexed

About

Karen Ritchie is a scholar working on Psychiatry and Mental health, Physiology and General Health Professions. According to data from OpenAlex, Karen Ritchie has authored 416 papers receiving a total of 24.2k indexed citations (citations by other indexed papers that have themselves been cited), including 164 papers in Psychiatry and Mental health, 75 papers in Physiology and 59 papers in General Health Professions. Recurrent topics in Karen Ritchie's work include Dementia and Cognitive Impairment Research (141 papers), Alzheimer's disease research and treatments (44 papers) and Nutritional Studies and Diet (29 papers). Karen Ritchie is often cited by papers focused on Dementia and Cognitive Impairment Research (141 papers), Alzheimer's disease research and treatments (44 papers) and Nutritional Studies and Diet (29 papers). Karen Ritchie collaborates with scholars based in France, United Kingdom and Australia. Karen Ritchie's co-authors include Marie‐Laure Ancelin, Sylvaine Artéro, Jacques Touchon, Isabelle Carrière, A Besset, Alexander Kurz, Leon J. Thal, Rachelle S. Doody, Richard C. Mohs and Bengt Winblad and has published in prestigious journals such as The Lancet, JAMA and SHILAP Revista de lepidopterología.

In The Last Decade

Karen Ritchie

407 papers receiving 23.3k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Current Concepts in Mild Cognitive Impairment

2001 3.8k citations Karen Ritchie et al. profile →
Sleep and Depression

2005 844 citations A Besset, Karen Ritchie et al. profile →
Resilience and mental health

2010 838 citations Dmitry M. Davydov, Karen Ritchie et al. profile →
Classification criteria for mild cognitive impairment

2001 675 citations Karen Ritchie, Sylvaine Artéro et al. profile →
Target risk factors for dementia prevention: a systematic review and Delphi consensus study on the evidence from observational studies

2014 375 citations Karen Ritchie et al. profile →

Peers

Countries citing papers authored by Karen Ritchie

Since Specialization

Citations

This map shows the geographic impact of Karen Ritchie's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Karen Ritchie with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Karen Ritchie more than expected).

Fields of papers citing papers by Karen Ritchie

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Karen Ritchie. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Karen Ritchie. The network helps show where Karen Ritchie may publish in the future.

Co-authorship network of co-authors of Karen Ritchie

This figure shows the co-authorship network connecting the top 25 collaborators of Karen Ritchie. A scholar is included among the top collaborators of Karen Ritchie based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Karen Ritchie. Karen Ritchie is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	Associations between sex and lifestyle activities with cognitive reserve in mid-life adults with genetic risk for Alzheimer’s disease 2024 ·Alzheimer s Research & Therapy ·Qing Qi, (unknown), (unknown), Karen Ritchie, Graciela Muñiz‐Terrera, Ivan Koychev, Paresh Malhotra, Siobhán Hutchinson, David Robinson, John T. O’Brien, Brian Lawlor, Lorina Naçi	0
2	Entorhinal‐based path integration selectively predicts midlife risk of Alzheimer's disease 2024 ·Alzheimer s & Dementia ·(unknown), (unknown), Catarina Rua, Richard N. Henson, (unknown), Neil Burgess, Christopher T. Rodgers, Matthias Stangl, Maria‐Eleni Dounavi, (unknown), Ivan Koychev, Paresh Malhotra, Thomas Wolbers, Karen Ritchie, Craig Ritchie, John T. O’Brien, Li Su, Dennis Chan	12
3	Investigating the brain’s neurochemical profile at midlife in relation to dementia risk factors 2024 ·Brain Communications ·Maria‐Eleni Dounavi, (unknown), (unknown), Sarah Gregory, Graciela Muñiz‐Terrera, (unknown), Marius Mada, Guy Williams, Brian Lawlor, Lorina Naçi, Clare E. Mackay, Ivan Koychev, Paresh Malhotra, Karen Ritchie, Craig Ritchie, Li Su, Adam Waldman, John T. O’Brien	2
4	Brain age gap, dementia risk factors and cognition in middle age 2024 ·Brain Communications ·James D. Stefaniak, Elijah Mak, Li Su, Stephen F. Carter, Maria‐Eleni Dounavi, Graciela Muñiz‐Terrera, (unknown), (unknown), Brian Lawlor, Lorina Naçi, Ivan Koychev, Paresh Malhotra, Karen Ritchie, John T. O’Brien	3
5	Dementia risk and thalamic nuclei volumetry in healthy midlife adults: the PREVENT Dementia study 2024 ·Brain Communications ·(unknown), Maria‐Eleni Dounavi, Paresh Malhotra, Brian Lawlor, Lorina Naçi, Ivan Koychev, Craig Ritchie, Karen Ritchie, John T. O’Brien	5
6	Lifestyle activities contribute to cognitive reserve in mid‐life, independently of education, in cognitively healthy middle‐aged individuals at risk for late‐life Alzheimer’s disease 2023 ·Alzheimer s & Dementia ·(unknown), (unknown), (unknown), Maria‐Eleni Dounavi, Karen Ritchie, Graciela Muñiz‐Terrera, Paresh Malhotra, Craig Ritchie, Brian Lawlor, Lorina Naçi	1
7	Childhood adverse events and BDNF promoter methylation in later-life 2023 ·Frontiers in Psychiatry ·(unknown), Marie‐Laure Ancelin, Karen Ritchie, Joanne Ryan	4
8	Differential association of cerebral blood flow and anisocytosis in APOE ε4 carriers at midlife 2023 ·Journal of Cerebral Blood Flow & Metabolism ·Maria‐Eleni Dounavi, Elijah Mak, Peter Swann, Audrey Low, Graciela Muñiz‐Terrera, (unknown), (unknown), Guy Williams, Katie Wells, Brian Lawlor, Lorina Naçi, Paresh Malhotra, Clare E. Mackay, Ivan Koychev, Karen Ritchie, Li Su, Craig Ritchie, John T. O’Brien	7
9	Fluid-attenuated inversion recovery magnetic resonance imaging textural features as sensitive markers of white matter damage in midlife adults 2022 ·Brain Communications ·Maria‐Eleni Dounavi, Audrey Low, Graciela Muñiz‐Terrera, Karen Ritchie, Craig Ritchie, Li Su, Hugh S. Markus, John T. O’Brien	5
10	CAIDE dementia risk score relates to severity and progression of cerebral small vessel disease in healthy midlife adults: the PREVENT-Dementia study 2022 ·Journal of Neurology Neurosurgery & Psychiatry ·Audrey Low, (unknown), James D. Stefaniak, (unknown), Stephen F. Carter, (unknown), Elijah Mak, Li Su, (unknown), Graciela Muniz, Karen Ritchie, Craig Ritchie, Hugh S. Markus, John T. O’Brien	20
11	Evidence of cerebral hemodynamic dysregulation in middle-aged APOE ε4 carriers: The PREVENT-Dementia study 2021 ·Journal of Cerebral Blood Flow & Metabolism ·Maria‐Eleni Dounavi, Audrey Low, (unknown), Elijah Mak, Graciela Muñiz‐Terrera, Karen Ritchie, Craig Ritchie, Li Su, John T. O’Brien	23
12	Proximity to dementia onset and multi-modal neuroimaging changes: The prevent-dementia study 2021 ·NeuroImage ·Elijah Mak, Maria‐Eleni Dounavi, Audrey Low, Stephen F. Carter, (unknown), Guy Williams, P. Simon Jones, Isabelle Carrière, Graciela Muniz, Karen Ritchie, Craig Ritchie, Li Su, John T. O’Brien	9
13	Late-life cynical hostility is associated with white matter alterations and the risk of Alzheimer's disease 2021 ·Psychological Medicine ·Fabienne Cyprien, Claudine Berr, Jerome J. Maller, Chantal Meslin, (unknown), Thibault Mura, Audrey Gabelle, Philippe Courtet, Karen Ritchie, Marie‐Laure Ancelin, Sylvaine Artéro	6
14	Inherited risk of dementia and the progression of cerebral small vessel disease and inflammatory markers in cognitively healthy midlife adults: the PREVENT-Dementia study 2020 ·Neurobiology of Aging ·Audrey Low, Li Su, James D. Stefaniak, Elijah Mak, Maria‐Eleni Dounavi, Graciela Muñiz‐Terrera, Karen Ritchie, Craig Ritchie, Hugh S. Markus, John T. O’Brien	13
15	Assessing Peripheral Retinal Drusen Progression in Alzheimer’s Dementia: A Pilot Study Using Ultra-Wide Field Imaging 2014 ·Investigative Ophthalmology & Visual Science ·(unknown), Tünde Pető, (unknown), Sarah Gregory, (unknown), Karen Ritchie, Imre Lengyel	4
16	Excessive Sleepiness is Predictive of Cognitive Decline in the Elderly 2012 ·SLEEP ·Isabelle Jaussent, Jean Bouyer, Marie‐Laure Ancelin, Claudine Berr, Alexandra Foubert‐Samier, Karen Ritchie, Maurice M. Ohayon, A Besset, Yves Dauvilliers	173
17	Insomnia and Daytime Sleepiness Are Risk Factors for Depressive Symptoms in the Elderly 2011 ·SLEEP ·Isabelle Jaussent, Jean Bouyer, Marie‐Laure Ancelin, Tasnime Akbaraly, Karine Pérès, Karen Ritchie, A Besset, Yves Dauvilliers	227
18	Postural blood pressure, mood regulation, and life stress 2009 ·Psychophysiology ·Dmitry M. Davydov, Karen Ritchie	3
19	Sociodemographic differences in dietary habits in a population-based sample of elderly subjects: the 3C study. 2004 ·PubMed ·Sophie Larrieu, Luc Letenneur, Claudine Berr, Dartigues Jf, Karen Ritchie, Annick Alpérovitch, Béatrice Tavernier, Pascale Barberger‐Gateau	54
20	The French version of the Nottingham health profile. A comparison of items weights with those of the source version 1990 ·Social Science & Medicine ·D. Bucquet, (unknown), Karen Ritchie	153

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact