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Benchoufi M, Bokobza J, Chauvin A, Dion E, Baranne ML, Levan F, Gautier M, Cantin D, d'Humières T, Gil-Jardiné C, Benenati S, Orbelin M, Martinez M, Pierre-Kahn N, Diallo A, Vicaut E, Bourrier P. Comparison Between Lung Ultrasonography Score in the Emergency Department and Clinical Outcomes of Patients With or With Suspected COVID-19: An Observational Multicentric Study. J Ultrasound Med 2023; 42:2883-2895. [PMID: 37688781 DOI: 10.1002/jum.16329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 07/24/2023] [Accepted: 08/23/2023] [Indexed: 09/11/2023]
Abstract
OBJECTIVE Chest CT is the reference test for assessing pulmonary injury in suspected or diagnosed COVID-19 with signs of clinical severity. This study aimed to evaluate the association of a lung ultrasonography score and unfavorable clinical evolution at 28 days. METHODS The eChoVid is a multicentric study based on routinely collected data that was conducted in 8 emergency units in France; patients were included between March 19, 2020 and April 28, 2020 and underwent lung ultrasonography, a short clinical assessment by 2 emergency physicians blinded to each other's assessment, and chest CT. Lung ultrasonography consisted of scoring lesions from 0 to 3 in 8 chest zones, thus defining a global score (GS) of severity from 0 to 24. The primary outcome was the association of lung damage severity as assessed by the GS at day 0 and patient status at 28 days. Secondary outcomes were comparing the performance between GS and CT scan and the performance between a new trainee physician and an ultrasonography expert in scores. RESULTS For the 328 patients analyzed, the GS showed good performance in predicting clinical worsening at 28 days (area under the receiver operating characteristic curve [AUC] 0.83, sensitivity 84.2%, specificity 76.4%). The GS showed good performance in predicting the CT severity assessment (AUC 0.84, sensitivity 77.2%, specificity 83.7%). CONCLUSION A lung ultrasonography GS is a simple tool that can be used in the emergency department to predict unfavorable assessment at 28 days in patients with COVID-19.
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Affiliation(s)
- Mehdi Benchoufi
- Center for Clinical Epidemiology, Hôtel-Dieu Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
- METHODS Team, Center for Research in Epidemiology and Statistics Sorbonne Paris Cité (CRESS-UMR 1153), Paris, France
- PICUS, Point of Care UltraSound Institute, Paris, France
| | - Jerôme Bokobza
- PICUS, Point of Care UltraSound Institute, Paris, France
- Adult Emergency Department, Hôpital Cochin, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Anthony Chauvin
- Adult Emergency Department, Hôpital Lariboisière, Inserm U942 MASCOT, Université de Paris, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Elisabeth Dion
- Imaging Department Hôtel Dieu, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France
- Centre de Recherche de l'Inflammation (CRI), INSERM U1149, Paris, France
| | - Marie-Laure Baranne
- Center for Clinical Epidemiology, Hôtel-Dieu Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
- PICUS, Point of Care UltraSound Institute, Paris, France
| | - Fabien Levan
- Adult Emergency Department, Hôpital Cochin, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Maxime Gautier
- PICUS, Point of Care UltraSound Institute, Paris, France
- Adult Emergency Department, Hôpital Cochin, Assistance Publique Hôpitaux de Paris, Paris, France
| | - Delphine Cantin
- Imaging Department Hôtel Dieu, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France
| | - Thomas d'Humières
- Physiology Department, Henri Mondor University Hospital, Créteil, France
| | - Cédric Gil-Jardiné
- Adult Emergency Department SAMU-SMUR, Pellegrin Hospital, University Hospital Center, Bordeaux, France
- Bordeaux Population Health, INSERM U1219, IETO Team, Bordeaux University, Bordeaux, France
| | - Sylvain Benenati
- Adult Emergency Department, Hospital Group South Ile-de-France, Melun, France
| | - Mathieu Orbelin
- Adult Emergency Department, New Civil Hospital, Strasbourg, France
| | - Mikaël Martinez
- Adult Emergency Department, Forez Hospital Center, Montbrison, France
- Nord Emergency Network Ligérien Ardèche (REULIAN), Hospital Center Le Corbusier, Firminy, France
| | - Nathalie Pierre-Kahn
- Imaging Department Hôtel Dieu, Assistance Publique-Hôpitaux de Paris, Université de Paris, Paris, France
| | - Abdourahmane Diallo
- Clinical Trial Unit Hospital, Lariboisière St-Louis AP-HP, Paris University, Paris, France
| | - Eric Vicaut
- Clinical Trial Unit Hospital, Lariboisière St-Louis AP-HP, Paris University, Paris, France
| | - Pierre Bourrier
- Imaging Department Saint-Louis Hospital, Assistance Publique des Hôpitaux de Paris (AP-HP), Paris, France
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Perlmutter A, Benchoufi M, Ravaud P, Tran VT. Identification of Patient Perceptions That Can Affect the Uptake of Interventions Using Biometric Monitoring Devices: Systematic Review of Randomized Controlled Trials. J Med Internet Res 2020; 22:e18986. [PMID: 32915153 PMCID: PMC7519434 DOI: 10.2196/18986] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 07/23/2020] [Accepted: 07/26/2020] [Indexed: 12/24/2022] Open
Abstract
Background Biometric monitoring devices (BMDs) are wearable or environmental trackers and devices with embedded sensors that
can remotely collect high-frequency objective data on patients’ physiological, biological, behavioral, and environmental
contexts (for example, fitness trackers with accelerometer). The real-world effectiveness of interventions using biometric monitoring devices depends on patients’ perceptions of these interventions. Objective We aimed to systematically review whether and how recent randomized controlled trials (RCTs) evaluating interventions using BMDs assessed patients’ perceptions toward the intervention. Methods We systematically searched PubMed (MEDLINE) from January 1, 2017, to December 31, 2018, for RCTs evaluating interventions using BMDs. Two independent investigators extracted the following information: (1) whether the RCT collected information on patient perceptions toward the intervention using BMDs and (2) if so, what precisely was collected, based on items from questionnaires used and/or themes and subthemes identified from qualitative assessments. The two investigators then synthesized their findings in a schema of patient perceptions of interventions using BMDs. Results A total of 58 RCTs including 10,071 participants were included in the review (the median number of randomized participants was 60, IQR 37-133). BMDs used in interventions were accelerometers/pedometers (n=35, 60%), electrochemical biosensors (eg, continuous glucose monitoring; n=18, 31%), or ecological momentary assessment devices (eg, carbon monoxide monitors for smoking cessation; n=5, 9%). Overall, 26 (45%) trials collected information on patient perceptions toward the intervention using BMDs and allowed the identification of 76 unique aspects of patient perceptions that could affect the uptake of these interventions (eg, relevance of the information provided, alarm burden, privacy and data handling, impact on health outcomes, independence, interference with daily life). Patient perceptions were unevenly collected in trials. For example, only 5% (n=3) of trials assessed how patients felt about privacy and data handling aspects of the intervention using BMDs. Conclusions Our review showed that less than half of RCTs evaluating interventions using BMDs assessed patients’ perceptions toward interventions using BMDs. Trials that did assess perceptions often only assessed a fraction of them. This limits the extrapolation of the results of these RCTs to the real world. We thus provide a comprehensive schema of aspects of patient perceptions that may affect the uptake of interventions using BMDs and which should be considered in future trials. Trial Registration PROSPERO CRD42018115522; https://tinyurl.com/y5h8fjgx
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Affiliation(s)
- Alexander Perlmutter
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, United States.,School of Global Public Health, New York University, New York, NY, United States
| | - Mehdi Benchoufi
- UMR1153 (METHODS team), Centre de Recherche en Epidemiologie et StatistiqueS, Institut national de la santé et de la recherche médicale, Paris, France
| | - Philippe Ravaud
- UMR1153 (METHODS team), Centre de Recherche en Epidemiologie et StatistiqueS, Institut national de la santé et de la recherche médicale, Paris, France
| | - Viet-Thi Tran
- UMR1153 (METHODS team), Centre de Recherche en Epidemiologie et StatistiqueS, Institut national de la santé et de la recherche médicale, Paris, France
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Bey R, Goussault R, Grolleau F, Benchoufi M, Porcher R. Fold-stratified cross-validation for unbiased and privacy-preserving federated learning. J Am Med Inform Assoc 2020; 27:1244-1251. [PMID: 32620945 PMCID: PMC7647321 DOI: 10.1093/jamia/ocaa096] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/29/2020] [Accepted: 05/11/2020] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE We introduce fold-stratified cross-validation, a validation methodology that is compatible with privacy-preserving federated learning and that prevents data leakage caused by duplicates of electronic health records (EHRs). MATERIALS AND METHODS Fold-stratified cross-validation complements cross-validation with an initial stratification of EHRs in folds containing patients with similar characteristics, thus ensuring that duplicates of a record are jointly present either in training or in validation folds. Monte Carlo simulations are performed to investigate the properties of fold-stratified cross-validation in the case of a model data analysis using both synthetic data and MIMIC-III (Medical Information Mart for Intensive Care-III) medical records. RESULTS In situations in which duplicated EHRs could induce overoptimistic estimations of accuracy, applying fold-stratified cross-validation prevented this bias, while not requiring full deduplication. However, a pessimistic bias might appear if the covariate used for the stratification was strongly associated with the outcome. DISCUSSION Although fold-stratified cross-validation presents low computational overhead, to be efficient it requires the preliminary identification of a covariate that is both shared by duplicated records and weakly associated with the outcome. When available, the hash of a personal identifier or a patient's date of birth provides such a covariate. On the contrary, pseudonymization interferes with fold-stratified cross-validation, as it may break the equality of the stratifying covariate among duplicates. CONCLUSION Fold-stratified cross-validation is an easy-to-implement methodology that prevents data leakage when a model is trained on distributed EHRs that contain duplicates, while preserving privacy.
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Affiliation(s)
- Romain Bey
- Centre of Research in Epidemiology and Statistics (CRESS), Université de Paris, French Institute of Health and Medical Research (INSERM), National Institute of Agricultural Research (INRA), Paris, France
| | - Romain Goussault
- CIC 1413, Center for Research in Cancerology and Immunology Nantes-Angers (CRCINA), Dermatology Department, Centre Hospitalier Universitaire Nantes, Nantes University, Nantes, France
| | - François Grolleau
- Centre of Research in Epidemiology and Statistics (CRESS), Université de Paris, French Institute of Health and Medical Research (INSERM), National Institute of Agricultural Research (INRA), Paris, France
| | - Mehdi Benchoufi
- Centre of Research in Epidemiology and Statistics (CRESS), Université de Paris, French Institute of Health and Medical Research (INSERM), National Institute of Agricultural Research (INRA), Paris, France
| | - Raphaël Porcher
- Centre of Research in Epidemiology and Statistics (CRESS), Université de Paris, French Institute of Health and Medical Research (INSERM), National Institute of Agricultural Research (INRA), Paris, France
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Porsdam Mann S, Savulescu J, Ravaud P, Benchoufi M. Blockchain, consent and prosent for medical research. J Med Ethics 2020; 47:medethics-2019-105963. [PMID: 32366703 PMCID: PMC8053330 DOI: 10.1136/medethics-2019-105963] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/20/2020] [Accepted: 03/27/2020] [Indexed: 05/31/2023]
Abstract
Recent advances in medical and information technologies, the availability of new types of medical data, the requirement of increasing numbers of study participants, as well as difficulties in recruitment and retention, all present serious problems for traditional models of specific and informed consent to medical research. However, these advances also enable novel ways to securely share and analyse data. This paper introduces one of these advances-blockchain technologies-and argues that they can be used to share medical data in a secure and auditable fashion. In addition, some aspects of consent and data collection, as well as data access management and analysis, can be automated using blockchain-based smart contracts. This paper demonstrates how blockchain technologies can be used to further all three of the bioethical principles underlying consent requirements: the autonomy of patients, by giving them much greater control over their data; beneficence, by greatly facilitating medical research efficiency and by reducing biases and opportunities for errors; and justice, by enabling patients with rare or under-researched conditions to pseudonymously aggregate their data for analysis. Finally, we coin and describe the novel concept of prosent, by which we mean the blockchain-enabled ability of all stakeholders in the research process to pseudonymously and proactively consent to data release or exchange under specific conditions, such as trial completion.
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Affiliation(s)
- Sebastian Porsdam Mann
- Department of Communication, University of Copenhagen Faculty of Humanities, København, Denmark
- Oxford Uehiro Centre for Practical Ethics, University of Oxford, Oxford, UK
| | - Julian Savulescu
- Faculty of Philosophy, Oxford Uehiro Centre for Practical Ethics, Oxford, UK
| | - Philippe Ravaud
- Mailman School of Public Health, Columbia University, New York, New York, USA
- Clinical Epidemiology, Université Paris Descartes Faculté de Médecine, Paris, Île-de-France, France
| | - Mehdi Benchoufi
- Clinical Epidemiology, Universite Paris Descartes Faculté de Médecine, Paris, Île-de-France, France
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Benchoufi M, Altman D, Ravaud P. From Clinical Trials to Highly Trustable Clinical Trials: Blockchain in Clinical Trials, a Game Changer for Improving Transparency? Front Blockchain 2019. [DOI: 10.3389/fbloc.2019.00023] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Nguyen VT, Young B, Ravaud P, Naidoo N, Benchoufi M, Boutron I. Overcoming Barriers to Mobilizing Collective Intelligence in Research: Qualitative Study of Researchers With Experience of Collective Intelligence. J Med Internet Res 2019; 21:e13792. [PMID: 31267977 PMCID: PMC6632103 DOI: 10.2196/13792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 01/08/2023] Open
Abstract
Background Innovative ways of planning and conducting research have emerged recently, based on the concept of collective intelligence. Collective intelligence is defined as shared intelligence emerging when people are mobilized within or outside an organization to work on a specific task that could result in more innovative outcomes than those when individuals work alone. Crowdsourcing is defined as “the act of taking a job traditionally performed by a designated agent and outsourcing it to an undefined, generally large group of people in the form of an open call.” Objective This qualitative study aimed to identify the barriers to mobilizing collective intelligence and ways to overcome these barriers and provide good practice advice for planning and conducting collective intelligence projects across different research disciplines. Methods We conducted a multinational online open-ended question survey and semistructured audio-recorded interviews with a purposive sample of researchers who had experience in running collective intelligence projects. The questionnaires had an interactive component, enabling respondents to rate and comment on the advice of their fellow respondents. Data were analyzed thematically, drawing on the framework method. Results A total of 82 respondents from various research fields participated in the survey (n=65) or interview (n=17). The main barriers identified were the lack of evidence-based guidelines for implementing collective intelligence, complexity in recruiting and engaging the community, and difficulties in disseminating the results of collective intelligence projects. We drew on respondents’ experience to provide tips and good practice advice for governance, planning, and conducting collective intelligence projects. Respondents particularly suggested establishing a diverse coordination team to plan and manage collective intelligence projects and setting up common rules of governance for participants in projects. In project planning, respondents provided advice on identifying research problems that could be answered by collective intelligence and identifying communities of participants. They shared tips on preparing the task and interface and organizing communication activities to recruit and engage participants. Conclusions Mobilizing collective intelligence through crowdsourcing is an innovative method to increase research efficiency, although there are several barriers to its implementation. We present good practice advice from researchers with experience of collective intelligence across different disciplines to overcome barriers to mobilizing collective intelligence.
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Affiliation(s)
- Van Thu Nguyen
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, France.,University Paris Descartes, Paris, France.,Department of Health Services Research, Institute of Population Health Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Bridget Young
- Department of Health Services Research, Institute of Population Health Sciences, University of Liverpool, Liverpool, United Kingdom
| | - Philippe Ravaud
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, France.,University Paris Descartes, Paris, France.,Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Nivantha Naidoo
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, France
| | - Mehdi Benchoufi
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, France.,University Paris Descartes, Paris, France.,Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Isabelle Boutron
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, France.,University Paris Descartes, Paris, France.,Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
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Nguyen VT, Benchoufi M, Young B, Ghosn L, Ravaud P, Boutron I. A scoping review provided a framework for new ways of doing research through mobilizing collective intelligence. J Clin Epidemiol 2019; 110:1-11. [PMID: 30772456 DOI: 10.1016/j.jclinepi.2019.02.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 01/14/2019] [Accepted: 02/04/2019] [Indexed: 11/16/2022]
Abstract
OBJECTIVES New forms of research involving collective intelligence (CI) of diverse individuals mobilized through crowdsourcing is successfully emerging in various fields. This scoping review aimed to describe these methods across different fields and propose a framework for implementation. STUDY DESIGN AND SETTING We searched seven electronic databases for reports describing projects that had mobilized CI with crowdsourcing. We used content analysis to develop themes and categories of the methods. RESULTS We identified 145 reports. CI was mobilized to generate ideas, conduct evaluations, solve problems, and create intellectual outputs. Most projects (n = 110, 76%) were open to the public without restrictions on participants' expertise. Participants contributed to projects by independent contribution (i.e., no interaction with other participants) (n = 50, 34%), collaboration (n = 41, 28%), competitions (n = 33, 23%), and playing games (n = 16, 11%). In total, 61% of articles (n = 89) reported methods to evaluate participants' contribution and decision-making process: 43% used an independent panel of experts and 18% involved end users. We identified challenges in implementation and sustainability of CI and proposed solutions. CONCLUSION New research methods based on CI through crowdsourcing could transform clinical research. This framework facilitates the implementation of these methods.
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Affiliation(s)
- Van Thu Nguyen
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, F-75014 France; Paris Descartes University, Sorbonne Paris Cité, France; Department of Health Services Research, Institute of Population Health Sciences, University of Liverpool, Liverpool L69 3GB, UK.
| | - Mehdi Benchoufi
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, F-75014 France; Paris Descartes University, Sorbonne Paris Cité, France; Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Bridget Young
- Department of Health Services Research, Institute of Population Health Sciences, University of Liverpool, Liverpool L69 3GB, UK
| | - Lina Ghosn
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, F-75014 France; Paris Descartes University, Sorbonne Paris Cité, France; Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Philippe Ravaud
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, F-75014 France; Paris Descartes University, Sorbonne Paris Cité, France; Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Isabelle Boutron
- INSERM, U1153 Epidemiology and Biostatistics Sorbonne Paris Cité Research Center (CRESS), Methods of Therapeutic Evaluation of Chronic Diseases Team (METHODS), Paris, F-75014 France; Paris Descartes University, Sorbonne Paris Cité, France; Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
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Benchoufi M, Fournier M, Magrez D, Macaux G, Barué V, Mansilla Sanchez A, de Fresnoye O, Fillaudeau R, Tauvel-Mocquet O, Chalabi N, Petit-Nivard JF, Blondel L, Santolini M, Ben Hadj Yahia B. Epidemium: A multidisciplinary community to tackle cancer using big and open data. J Clin Oncol 2018. [DOI: 10.1200/jco.2018.36.15_suppl.e13604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Mehdi Benchoufi
- Centre d’Épidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | | | - David Magrez
- ROCHE S.A.S - Medical Affairs, Boulogne-Billancourt, France
| | | | - Vanessa Barué
- ROCHE S.A.S - Medical Affairs, Boulogne Billancourt, France
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Créquit P, Mansouri G, Benchoufi M, Vivot A, Ravaud P. Mapping of Crowdsourcing in Health: Systematic Review. J Med Internet Res 2018; 20:e187. [PMID: 29764795 PMCID: PMC5974463 DOI: 10.2196/jmir.9330] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 02/10/2018] [Accepted: 03/14/2018] [Indexed: 11/22/2022] Open
Abstract
Background Crowdsourcing involves obtaining ideas, needed services, or content by soliciting Web-based contributions from a crowd. The 4 types of crowdsourced tasks (problem solving, data processing, surveillance or monitoring, and surveying) can be applied in the 3 categories of health (promotion, research, and care). Objective This study aimed to map the different applications of crowdsourcing in health to assess the fields of health that are using crowdsourcing and the crowdsourced tasks used. We also describe the logistics of crowdsourcing and the characteristics of crowd workers. Methods MEDLINE, EMBASE, and ClinicalTrials.gov were searched for available reports from inception to March 30, 2016, with no restriction on language or publication status. Results We identified 202 relevant studies that used crowdsourcing, including 9 randomized controlled trials, of which only one had posted results at ClinicalTrials.gov. Crowdsourcing was used in health promotion (91/202, 45.0%), research (73/202, 36.1%), and care (38/202, 18.8%). The 4 most frequent areas of application were public health (67/202, 33.2%), psychiatry (32/202, 15.8%), surgery (22/202, 10.9%), and oncology (14/202, 6.9%). Half of the reports (99/202, 49.0%) referred to data processing, 34.6% (70/202) referred to surveying, 10.4% (21/202) referred to surveillance or monitoring, and 5.9% (12/202) referred to problem-solving. Labor market platforms (eg, Amazon Mechanical Turk) were used in most studies (190/202, 94%). The crowd workers’ characteristics were poorly reported, and crowdsourcing logistics were missing from two-thirds of the reports. When reported, the median size of the crowd was 424 (first and third quartiles: 167-802); crowd workers’ median age was 34 years (32-36). Crowd workers were mainly recruited nationally, particularly in the United States. For many studies (58.9%, 119/202), previous experience in crowdsourcing was required, and passing a qualification test or training was seldom needed (11.9% of studies; 24/202). For half of the studies, monetary incentives were mentioned, with mainly less than US $1 to perform the task. The time needed to perform the task was mostly less than 10 min (58.9% of studies; 119/202). Data quality validation was used in 54/202 studies (26.7%), mainly by attention check questions or by replicating the task with several crowd workers. Conclusions The use of crowdsourcing, which allows access to a large pool of participants as well as saving time in data collection, lowering costs, and speeding up innovations, is increasing in health promotion, research, and care. However, the description of crowdsourcing logistics and crowd workers’ characteristics is frequently missing in study reports and needs to be precisely reported to better interpret the study findings and replicate them.
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Affiliation(s)
- Perrine Créquit
- INSERM UMR1153, Methods Team, Epidemiology and Statistics Sorbonne Paris Cité Research Center, Paris Descartes University, Paris, France.,Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France.,Cochrane France, Paris, France
| | - Ghizlène Mansouri
- INSERM UMR1153, Methods Team, Epidemiology and Statistics Sorbonne Paris Cité Research Center, Paris Descartes University, Paris, France
| | - Mehdi Benchoufi
- Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Alexandre Vivot
- INSERM UMR1153, Methods Team, Epidemiology and Statistics Sorbonne Paris Cité Research Center, Paris Descartes University, Paris, France.,Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France
| | - Philippe Ravaud
- INSERM UMR1153, Methods Team, Epidemiology and Statistics Sorbonne Paris Cité Research Center, Paris Descartes University, Paris, France.,Centre d'Epidémiologie Clinique, Hôpital Hôtel Dieu, Assistance Publique des Hôpitaux de Paris, Paris, France.,Cochrane France, Paris, France.,Department of Epidemiology, Columbia University, Mailman School of Public Health, New York, NY, United States
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Abstract
Reproducibility, data sharing, personal data privacy concerns and patient enrolment in clinical trials are huge medical challenges for contemporary clinical research. A new technology, Blockchain, may be a key to addressing these challenges and should draw the attention of the whole clinical research community.Blockchain brings the Internet to its definitive decentralisation goal. The core principle of Blockchain is that any service relying on trusted third parties can be built in a transparent, decentralised, secure "trustless" manner at the top of the Blockchain (in fact, there is trust, but it is hardcoded in the Blockchain protocol via a complex cryptographic algorithm). Therefore, users have a high degree of control over and autonomy and trust of the data and its integrity. Blockchain allows for reaching a substantial level of historicity and inviolability of data for the whole document flow in a clinical trial. Hence, it ensures traceability, prevents a posteriori reconstruction and allows for securely automating the clinical trial through what are called Smart Contracts. At the same time, the technology ensures fine-grained control of the data, its security and its shareable parameters, for a single patient or group of patients or clinical trial stakeholders.In this commentary article, we explore the core functionalities of Blockchain applied to clinical trials and we illustrate concretely its general principle in the context of consent to a trial protocol. Trying to figure out the potential impact of Blockchain implementations in the setting of clinical trials will shed new light on how modern clinical trial methods could evolve and benefit from Blockchain technologies in order to tackle the aforementioned challenges.
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Affiliation(s)
- Mehdi Benchoufi
- INSERM U1153, Paris, France. .,Assistance Publique-Hôpitaux de Paris, Centre d'Epidémiologie Clinique, Hôpital Hôtel-Dieu, Paris, France. .,Université Paris Descartes-Sorbonne Paris Cité, Paris, France.
| | - Philippe Ravaud
- INSERM U1153, Paris, France.,Assistance Publique-Hôpitaux de Paris, Centre d'Epidémiologie Clinique, Hôpital Hôtel-Dieu, Paris, France.,Université Paris Descartes-Sorbonne Paris Cité, Paris, France.,French Cochrane Centre, Paris, France.,Department of Epidemiology, Mailman School of Public Health, Columbia University, New York City, USA
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11
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Abstract
Clinical trial consent for protocols and their revisions should be transparent for patients and traceable for stakeholders. Our goal is to implement a process allowing the collection of patients' informed consent, which is bound to protocol revisions, storing and tracking the consent in a secure, unfalsifiable and publicly verifiable way, and enabling the sharing of this information in real time. For that, we will built a consent workflow using a rising technology called Blockchain. This is a distributed technology that brings a built-in layer of transparency and traceability. Additionally, it removes the need for third parties, and gives participative control to the peer-to-peer users. From a more general and prospective point of view, we believe Blockchain technology brings a paradigmatical shift to the entire clinical research field. We designed a Proof-of-Concept protocol consisting of time-stamping each step of the patient's consent collection using Blockchain; thus archiving and historicising the consent through cryptographic validation in a securely unfalsifiable and transparent way. For each revision of the protocol, consent was sought again. We obtained a single document, in a standard open format, that accounted for the whole consent collection process: timestamped consent status with regards to each version of the protocol. This document cannot be corrupted, and can be checked on any dedicated public website. It should be considered as a robust proof of data. In the future, we think that the complex data flow of a clinical trial can be tracked using Blockchain. Moreover, a blockchain core functionality, named Smart Contract, can help prevent clinical trial events not to happen in the right chronological order: including patients before they consented or analysing case report forms data before freezing the database. This will help reaching reliability, security, and transparency, and could be a consistent step towards reproducibility.
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Affiliation(s)
| | | | - Philippe Ravaud
- Département d'Epidémiologie Clinique, APHP, Paris, France
- Centre de recherche Inserm Epidémiologie et Statistique Paris Sorbonne Cité (U1153), Université Paris Descartes, Paris, France
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12
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Abstract
Clinical trial consent for protocols and their revisions should be transparent for patients and traceable for stakeholders. Our goal is to implement a process allowing for collection of patients' informed consent, which is bound to protocol revisions, storing and tracking the consent in a secure, unfalsifiable and publicly verifiable way, and enabling the sharing of this information in real time. For that, we build a consent workflow using a trending technology called Blockchain. This is a distributed technology that brings a built-in layer of transparency and traceability. From a more general and prospective point of view, we believe Blockchain technology brings a paradigmatical shift to the entire clinical research field. We designed a Proof-of-Concept protocol consisting of time-stamping each step of the patient's consent collection using Blockchain, thus archiving and historicising the consent through cryptographic validation in a securely unfalsifiable and transparent way. For each protocol revision, consent was sought again. We obtained a single document, in an open format, that accounted for the whole consent collection process: a time-stamped consent status regarding each version of the protocol. This document cannot be corrupted and can be checked on any dedicated public website. It should be considered a robust proof of data. However, in a live clinical trial, the authentication system should be strengthened to remove the need for third parties, here trial stakeholders, and give participative control to the peer users. In the future, the complex data flow of a clinical trial could be tracked by using Blockchain, which core functionality, named Smart Contract, could help prevent clinical trial events not occurring in the correct chronological order, for example including patients before they consented or analysing case report form data before freezing the database. Globally, Blockchain could help with reliability, security, transparency and could be a consistent step toward reproducibility.
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Affiliation(s)
| | | | - Philippe Ravaud
- Département d'Epidémiologie Clinique, APHP, Paris, France
- Centre de recherche Inserm Epidémiologie et Statistique Paris Sorbonne Cité (U1153), Université Paris Descartes, Paris, France
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13
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Abstract
Clinical trial consent for protocols and their revisions should be transparent for patients and traceable for stakeholders. Our goal is to implement a process allowing for collection of patients' informed consent, which is bound to protocol revisions, storing and tracking the consent in a secure, unfalsifiable and publicly verifiable way, and enabling the sharing of this information in real time. For that, we build a consent workflow using a trending technology called Blockchain. This is a distributed technology that brings a built-in layer of transparency and traceability. From a more general and prospective point of view, we believe Blockchain technology brings a paradigmatical shift to the entire clinical research field. We designed a Proof-of-Concept protocol consisting of time-stamping each step of the patient's consent collection using Blockchain, thus archiving and historicising the consent through cryptographic validation in a securely unfalsifiable and transparent way. For each protocol revision, consent was sought again. We obtained a single document, in an open format, that accounted for the whole consent collection process: a time-stamped consent status regarding each version of the protocol. This document cannot be corrupted and can be checked on any dedicated public website. It should be considered a robust proof of data. However, in a live clinical trial, the authentication system should be strengthened to remove the need for third parties, here trial stakeholders, and give participative control to the peer users. In the future, the complex data flow of a clinical trial could be tracked by using Blockchain, which core functionality, named Smart Contract, could help prevent clinical trial events not occurring in the correct chronological order, for example including patients before they consented or analysing case report form data before freezing the database. Globally, Blockchain could help with reliability, security, transparency and could be a consistent step toward reproducibility.
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Affiliation(s)
| | | | - Philippe Ravaud
- Département d'Epidémiologie Clinique, APHP, Paris, France
- Centre de recherche Inserm Epidémiologie et Statistique Paris Sorbonne Cité (U1153), Université Paris Descartes, Paris, France
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14
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Abstract
Clinical trial consent for protocols and their revisions should be transparent for patients and traceable for stakeholders. Our goal is to implement a process allowing the collection of patients' informed consent, which is bound to protocol revisions, storing and tracking the consent in a secure, unfalsifiable and publicly verifiable way, and enabling the sharing of this information in real time. For that, we will built a consent workflow using a rising technology called Blockchain. This is a distributed technology that brings a built-in layer of transparency and traceability. Additionally, it removes the need for third parties, and gives participative control to the peer-to-peer users. From a more general and prospective point of view, we believe Blockchain technology brings a paradigmatical shift to the entire clinical research field. We designed a Proof-of-Concept protocol consisting of time-stamping each step of the patient's consent collection using Blockchain; thus archiving and historicising the consent through cryptographic validation in a securely unfalsifiable and transparent way. For each revision of the protocol, consent was sought again. We obtained a single document, in a standard open format, that accounted for the whole consent collection process: timestamped consent status with regards to each version of the protocol. This document cannot be corrupted, and can be checked on any dedicated public website. It should be considered as a robust proof of data. In the future, we think that the complex data flow of a clinical trial can be tracked using Blockchain. Moreover, a blockchain core functionality, named Smart Contract, can help prevent clinical trial events not to happen in the right chronological order: including patients before they consented or analysing case report forms data before freezing the database. This will help reaching reliability, security, and transparency, and could be a consistent step towards reproducibility.
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Affiliation(s)
| | | | - Philippe Ravaud
- Département d'Epidémiologie Clinique, APHP, Paris, France
- Centre de recherche Inserm Epidémiologie et Statistique Paris Sorbonne Cité (U1153), Université Paris Descartes, Paris, France
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15
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Abstract
Clinical trial consent for protocols and their revisions should be transparent for patients and traceable for stakeholders. Our goal is to implement a process allowing the collection of patients' informed consent, which is bound to protocol revisions, storing and tracking the consent in a secure, unfalsifiable and publicly verifiable way, and enabling the sharing of this information in real time. For that, we will built a consent workflow using a rising technology called Blockchain. This is a distributed technology that brings a built-in layer of transparency and traceability. From a more general and prospective point of view, we believe Blockchain technology brings a paradigmatical shift to the entire clinical research field. We designed a Proof-of-Concept protocol consisting of time-stamping each step of the patient's consent collection using Blockchain; thus archiving and historicising the consent through cryptographic validation in a securely unfalsifiable and transparent way. For each revision of the protocol, consent was sought again. We obtained a single document, in a standard open format, that accounted for the whole consent collection process: timestamped consent status with regards to each version of the protocol. This document cannot be corrupted, and can be checked on any dedicated public website. It should be considered as a robust proof of data. However, in a live clinical trial, the authentication system should be strengthened in order to remove the need for third parties, here the trial stakeholders, and give participative control to the peer-to-peer users. In the future, we think that the complex data flow of a clinical trial can be tracked using Blockchain, that a blockchain core functionality, named Smart Contract, could help prevent clinical trial events not to happen in the right chronological order: for example including patients before they consented or analysing case report forms data before freezing the database. Globally, we think Blockchain will help with reliability, security, and transparency, and could be a consistent step towards reproducibility.
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Affiliation(s)
| | | | - Philippe Ravaud
- Département d'Epidémiologie Clinique, APHP, Paris, France
- Centre de recherche Inserm Epidémiologie et Statistique Paris Sorbonne Cité (U1153), Université Paris Descartes, Paris, France
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