A citation-based method for searching scientific literature

Jonathan Hewitt, Ben Carter, Arturo Vilches-Moraga, Terence J Quinn, Philip Braude, Alessia Verduri, Lyndsay Pearce, Michael Stechman, Roxanna Short, Angeline Price, Jemima T Collins, Eilidh Bruce, Alice Einarsson, Frances Rickard, Emma Mitchell, Mark Holloway, James Hesford, Fenella Barlow-Pay, Enrico Clini, Phyo K Myint, Susan J Moug, Kathryn McCarthy. Lancet Public Health 2020
Times Cited: 134







List of co-cited articles
375 articles co-cited >1



Times Cited
  Times     Co-cited
Similarity


A global clinical measure of fitness and frailty in elderly people.
Kenneth Rockwood, Xiaowei Song, Chris MacKnight, Howard Bergman, David B Hogan, Ian McDowell, Arnold Mitnitski. CMAJ 2005
36

Clinical course and risk factors for mortality of adult inpatients with COVID-19 in Wuhan, China: a retrospective cohort study.
Fei Zhou, Ting Yu, Ronghui Du, Guohui Fan, Ying Liu, Zhibo Liu, Jie Xiang, Yeming Wang, Bin Song, Xiaoying Gu,[...]. Lancet 2020
24

Association of frailty with mortality in older inpatients with Covid-19: a cohort study.
Darren Aw, Lauren Woodrow, Giulia Ogliari, Rowan Harwood. Age Ageing 2020
29
82

Frailty and Mortality in Hospitalized Older Adults With COVID-19: Retrospective Observational Study.
Robert De Smet, Bea Mellaerts, Hannelore Vandewinckele, Peter Lybeert, Eric Frans, Sara Ombelet, Wim Lemahieu, Rolf Symons, Erwin Ho, Johan Frans,[...]. J Am Med Dir Assoc 2020
44
45

Comparing associations between frailty and mortality in hospitalised older adults with or without COVID-19 infection: a retrospective observational study using electronic health records.
Rhiannon K Owen, Simon P Conroy, Nicholas Taub, Will Jones, Daniele Bryden, Manish Pareek, Christina Faull, Keith R Abrams, Daniel Davis, Jay Banerjee. Age Ageing 2021
24
79

Outcomes from COVID-19 across the range of frailty: excess mortality in fitter older people.
Amy Miles, Thomas E Webb, Benjamin C Mcloughlin, Imran Mannan, Arshad Rather, Paul Knopp, Daniel Davis. Eur Geriatr Med 2020
22
77


Frailty in elderly people.
Andrew Clegg, John Young, Steve Iliffe, Marcel Olde Rikkert, Kenneth Rockwood. Lancet 2013
15

Frailty in older adults: evidence for a phenotype.
L P Fried, C M Tangen, J Walston, A B Newman, C Hirsch, J Gottdiener, T Seeman, R Tracy, W J Kop, G Burke,[...]. J Gerontol A Biol Sci Med Sci 2001
15

Clinical Characteristics of Coronavirus Disease 2019 in China.
Wei-Jie Guan, Zheng-Yi Ni, Yu Hu, Wen-Hua Liang, Chun-Quan Ou, Jian-Xing He, Lei Liu, Hong Shan, Chun-Liang Lei, David S C Hui,[...]. N Engl J Med 2020
14


Clinical Characteristics of 138 Hospitalized Patients With 2019 Novel Coronavirus-Infected Pneumonia in Wuhan, China.
Dawei Wang, Bo Hu, Chang Hu, Fangfang Zhu, Xing Liu, Jing Zhang, Binbin Wang, Hui Xiang, Zhenshun Cheng, Yong Xiong,[...]. JAMA 2020
12

The impact of frailty on intensive care unit outcomes: a systematic review and meta-analysis.
John Muscedere, Braden Waters, Aditya Varambally, Sean M Bagshaw, J Gordon Boyd, David Maslove, Stephanie Sibley, Kenneth Rockwood. Intensive Care Med 2017
232
12

Presenting Characteristics, Comorbidities, and Outcomes Among 5700 Patients Hospitalized With COVID-19 in the New York City Area.
Safiya Richardson, Jamie S Hirsch, Mangala Narasimhan, James M Crawford, Thomas McGinn, Karina W Davidson, Douglas P Barnaby, Lance B Becker, John D Chelico, Stuart L Cohen,[...]. JAMA 2020
11

Frailty and COVID-19: A Systematic Scoping Review.
Giuseppe Maltese, Andrea Corsonello, Mirko Di Rosa, Luca Soraci, Cristiana Vitale, Francesco Corica, Fabrizia Lattanzio. J Clin Med 2020
25
44

Features of 20 133 UK patients in hospital with covid-19 using the ISARIC WHO Clinical Characterisation Protocol: prospective observational cohort study.
Annemarie B Docherty, Ewen M Harrison, Christopher A Green, Hayley E Hardwick, Riinu Pius, Lisa Norman, Karl A Holden, Jonathan M Read, Frank Dondelinger, Gail Carson,[...]. BMJ 2020
810
11

Age, Frailty, and Comorbidity as Prognostic Factors for Short-Term Outcomes in Patients With Coronavirus Disease 2019 in Geriatric Care.
Sara Hägg, Juulia Jylhävä, Yunzhang Wang, Hong Xu, Carina Metzner, Martin Annetorp, Sara Garcia-Ptacek, Masih Khedri, Anne-Marie Boström, Ahmadul Kadir,[...]. J Am Med Dir Assoc 2020
33
33

Factors associated with COVID-19-related death using OpenSAFELY.
Elizabeth J Williamson, Alex J Walker, Krishnan Bhaskaran, Seb Bacon, Chris Bates, Caroline E Morton, Helen J Curtis, Amir Mehrkar, David Evans, Peter Inglesby,[...]. Nature 2020
870
10

The role of Frailty on Adverse Outcomes Among Older Patients with COVID-19.
Harun Kundi, Elif Hande Özcan Çetin, Uğur Canpolat, Sevgi Aras, Osman Celik, Naim Ata, Suayip Birinci, Serkan Çay, Özcan Özeke, Ibrahim Halil Tanboğa,[...]. J Infect 2020
16
62

Older age and frailty are the chief predictors of mortality in COVID-19 patients admitted to an acute medical unit in a secondary care setting- a cohort study.
Rajkumar Chinnadurai, Onesi Ogedengbe, Priya Agarwal, Sally Money-Coomes, Ahmad Z Abdurrahman, Sajeel Mohammed, Philip A Kalra, Nicola Rothwell, Sweta Pradhan. BMC Geriatr 2020
16
62

Clinical features of patients infected with 2019 novel coronavirus in Wuhan, China.
Chaolin Huang, Yeming Wang, Xingwang Li, Lili Ren, Jianping Zhao, Yi Hu, Li Zhang, Guohui Fan, Jiuyang Xu, Xiaoying Gu,[...]. Lancet 2020
9

Presenting features of COVID-19 in older people: relationships with frailty, inflammation and mortality.
Paul Knopp, Amy Miles, Thomas E Webb, Benjamin C Mcloughlin, Imran Mannan, Nadia Raja, Bettina Wan, Daniel Davis. Eur Geriatr Med 2020
20
45

Frailty index predicts poor outcome in COVID-19 patients.
Giuseppe Bellelli, Paola Rebora, Maria Grazia Valsecchi, Paolo Bonfanti, Giuseppe Citerio. Intensive Care Med 2020
27
33

Epidemiological and clinical characteristics of 99 cases of 2019 novel coronavirus pneumonia in Wuhan, China: a descriptive study.
Nanshan Chen, Min Zhou, Xuan Dong, Jieming Qu, Fengyun Gong, Yang Han, Yang Qiu, Jingli Wang, Ying Liu, Yuan Wei,[...]. Lancet 2020
8

Prevalence of comorbidities and its effects in patients infected with SARS-CoV-2: a systematic review and meta-analysis.
Jing Yang, Ya Zheng, Xi Gou, Ke Pu, Zhaofeng Chen, Qinghong Guo, Rui Ji, Haojia Wang, Yuping Wang, Yongning Zhou. Int J Infect Dis 2020
8

COVID-19: Use of the Clinical Frailty Scale for Critical Care Decisions.
Edward Chong, Mark Chan, Huei Nuo Tan, Wee Shiong Lim. J Am Geriatr Soc 2020
19
42

The association between frailty and severe disease among COVID-19 patients aged over 60 years in China: a prospective cohort study.
Yao Ma, Lisha Hou, Xiufang Yang, Zhixin Huang, Xue Yang, Na Zhao, Min He, Yixin Shi, Yan Kang, Jirong Yue,[...]. BMC Med 2020
18
44


Coronavirus disease 2019 in elderly patients: Characteristics and prognostic factors based on 4-week follow-up.
Lang Wang, Wenbo He, Xiaomei Yu, Dalong Hu, Mingwei Bao, Huafen Liu, Jiali Zhou, Hong Jiang. J Infect 2020
425
7

Frailty in the face of COVID-19.
Ruth E Hubbard, Andrea B Maier, Sarah N Hilmer, Vasi Naganathan, Christopher Etherton-Beer, Kenneth Rockwood. Age Ageing 2020
32
21


Comorbidity and its impact on 1590 patients with COVID-19 in China: a nationwide analysis.
Wei-Jie Guan, Wen-Hua Liang, Yi Zhao, Heng-Rui Liang, Zi-Sheng Chen, Yi-Min Li, Xiao-Qing Liu, Ru-Chong Chen, Chun-Li Tang, Tao Wang,[...]. Eur Respir J 2020
7

Inflammation and frailty in the elderly: A systematic review and meta-analysis.
Pinar Soysal, Brendon Stubbs, Paola Lucato, Claudio Luchini, Marco Solmi, Roberto Peluso, Giuseppe Sergi, Ahmet Turan Isik, Enzo Manzato, Stefania Maggi,[...]. Ageing Res Rev 2016
294
7

Frailty in very old critically ill patients in Australia and New Zealand: a population-based cohort study.
Jai N Darvall, Rinaldo Bellomo, Eldho Paul, Ashwin Subramaniam, John D Santamaria, Sean M Bagshaw, Sumeet Rai, Ruth E Hubbard, David Pilcher. Med J Aust 2019
23
26

The contribution of frailty, cognition, activity of daily life and comorbidities on outcome in acutely admitted patients over 80 years in European ICUs: the VIP2 study.
Bertrand Guidet, Dylan W de Lange, Ariane Boumendil, Susannah Leaver, Ximena Watson, Carol Boulanger, Wojciech Szczeklik, Antonio Artigas, Alessandro Morandi, Finn Andersen,[...]. Intensive Care Med 2020
49
12

Age and Multimorbidity Predict Death Among COVID-19 Patients: Results of the SARS-RAS Study of the Italian Society of Hypertension.
Guido Iaccarino, Guido Grassi, Claudio Borghi, Claudio Ferri, Massimo Salvetti, Massimo Volpe. Hypertension 2020
109
6

The impact of frailty on ICU and 30-day mortality and the level of care in very elderly patients (≥ 80 years).
Hans Flaatten, Dylan W De Lange, Alessandro Morandi, Finn H Andersen, Antonio Artigas, Guido Bertolini, Ariane Boumendil, Maurizio Cecconi, Steffen Christensen, Loredana Faraldi,[...]. Intensive Care Med 2017
120
6

Frailty and outcomes from pneumonia in critical illness: a population-based cohort study.
Jai N Darvall, Rinaldo Bellomo, Michael Bailey, Eldho Paul, Paul J Young, Kenneth Rockwood, David Pilcher. Br J Anaesth 2020
11
54

Delirium: a missing piece in the COVID-19 pandemic puzzle.
Shane O'Hanlon, Sharon K Inouye. Age Ageing 2020
40
15

Frailty consensus: a call to action.
John E Morley, Bruno Vellas, G Abellan van Kan, Stefan D Anker, Juergen M Bauer, Roberto Bernabei, Matteo Cesari, W C Chumlea, Wolfram Doehner, Jonathan Evans,[...]. J Am Med Dir Assoc 2013
6

COVID-19: a retrospective cohort study with focus on the over-80s and hospital-onset disease.
Simon E Brill, Hannah C Jarvis, Ezgi Ozcan, Thomas L P Burns, Rabia A Warraich, Lisa J Amani, Amina Jaffer, Stephanie Paget, Anand Sivaramakrishnan, Dean D Creer. BMC Med 2020
22
27

COVID-19: consider cytokine storm syndromes and immunosuppression.
Puja Mehta, Daniel F McAuley, Michael Brown, Emilie Sanchez, Rachel S Tattersall, Jessica J Manson. Lancet 2020
6

Risk Factors Associated With Acute Respiratory Distress Syndrome and Death in Patients With Coronavirus Disease 2019 Pneumonia in Wuhan, China.
Chaomin Wu, Xiaoyan Chen, Yanping Cai, Jia'an Xia, Xing Zhou, Sha Xu, Hanping Huang, Li Zhang, Xia Zhou, Chunling Du,[...]. JAMA Intern Med 2020
6

The impact of delirium on outcomes for older adults hospitalised with COVID-19.
Alessandra Marengoni, Alberto Zucchelli, Giulia Grande, Laura Fratiglioni, Debora Rizzuto. Age Ageing 2020
16
37

Atypical presentations of COVID-19 in care home residents presenting to secondary care: A UK single centre study.
Mark James Rawle, Deborah Lee Bertfield, Simon Edward Brill. Aging Med (Milton) 2020
9
66

Risk factors for death in adult COVID-19 patients: Frailty predicts fatal outcome in older patients.
Sara Tehrani, Anna Killander, Per Åstrand, Jan Jakobsson, Patrik Gille-Johnson. Int J Infect Dis 2021
11
54

Probable delirium is a presenting symptom of COVID-19 in frail, older adults: a cohort study of 322 hospitalised and 535 community-based older adults.
Maria Beatrice Zazzara, Rose S Penfold, Amy L Roberts, Karla A Lee, Hannah Dooley, Carole H Sudre, Carly Welch, Ruth C E Bowyer, Alessia Visconti, Massimo Mangino,[...]. Age Ageing 2021
21
28

Predictors of In-Hospital Mortality in Older Patients With COVID-19: The COVIDAge Study.
Aline Mendes, Christine Serratrice, François R Herrmann, Laurence Genton, Samuel Périvier, Max Scheffler, Thomas Fassier, Philippe Huber, Marie-Claire Jacques, Virginie Prendki,[...]. J Am Med Dir Assoc 2020
24
25

Epidemiology of Covid-19 in a Long-Term Care Facility in King County, Washington.
Temet M McMichael, Dustin W Currie, Shauna Clark, Sargis Pogosjans, Meagan Kay, Noah G Schwartz, James Lewis, Atar Baer, Vance Kawakami, Margaret D Lukoff,[...]. N Engl J Med 2020
532
6

Frailty predicts mortality in all emergency surgical admissions regardless of age. An observational study.
J Hewitt, B Carter, K McCarthy, L Pearce, J Law, F V Wilson, H S Tay, C McCormack, M J Stechman, S J Moug,[...]. Age Ageing 2019
48
12


Co-cited is the co-citation frequency, indicating how many articles cite the article together with the query article. Similarity is the co-citation as percentage of the times cited of the query article or the article in the search results, whichever is the lowest. These numbers are calculated for the last 100 citations when articles are cited more than 100 times.