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Assessing the Performance of Question-and-Answer Communities Using Survival Analysis [article]

Felipe Ortega, Gregorio Convertino, Massimo Zancanaro, Tiziano Piccardi
2014 arXiv   pre-print
Initial metrics used to assess the performance of these communities include summative statistics like the percentage of resolved questions or the average time to receive and validate correct answers.  ...  In this paper, we apply survival analysis to a selection of communities from the Stack Exchange platform.  ...  Hence, the aim of this paper is to introduce the use of survival analysis to model the occurrence of events of interest in online communities and web systems through the analysis of big datasets.  ... 
arXiv:1407.5903v2 fatcat:f3csbg7qknbibbucm6d7y4uhrm

Perspectives of continuous renal replacement therapy in the intensive care unit: a paired survey study of patient, physician, and nurse views

Andrew S. Allegretti, Gregory Hundemer, Rajeev Chorghade, Katherine Cosgrove, Ednan Bajwa, Ishir Bhan
2015 BMC Nephrology  
Univariate chi-square and qualitative analysis techniques were used. Results: Ninety-six total participants (32 survey triads) were completed.  ...  We aim to assess patient and provider understanding of outcomes around CRRT.  ...  None of the funding sources had any role in the study design, collection, analysis, interpretation of data, writing of the manuscript, or decision to submit the manuscript for publication.  ... 
doi:10.1186/s12882-015-0086-5 pmid:26169052 pmcid:PMC4501124 fatcat:wn65lt5nxre5riw2lhxtrxcl4a

Systematic Review for Network Survivability Analysis in MANETS

A.H. Azni, Rabiah Ahmad, Zul Azri Mohamad Noh, Farida Hazwani, Najwa Hayaati
2015 Procedia - Social and Behavioral Sciences  
We used studies from a number of relevant article sources, and our results showed the existence of twenty six (26) articles.  ...  Today, network survivability analysis is an essential aspect of reliable communication especially in MANETs.  ...  To answer this question, analysis will be based on publication years and the quantities of the articles.  ... 
doi:10.1016/j.sbspro.2015.06.424 fatcat:i3jtbizqbzezba4tcttug4lhm4

Effect of different visual presentations on the comprehension of prognostic information: a systematic review

Eman Abukmail, Mina Bakhit, Chris Del Mar, Tammy Hoffmann
2021 BMC Medical Informatics and Decision Making  
Limitations Heterogeneity in the visual presentations and outcome measures, precluding meta-analysis.  ...  Data extraction Two authors independently assessed risk of bias and extracted data. Data synthesis Eleven studies (all randomized trials) were identified.  ...  Acknowledgements We thank Justin Clark for his consultation and valuable advice in the development of the search strategy.  ... 
doi:10.1186/s12911-021-01612-9 pmid:34433455 pmcid:PMC8390199 fatcat:ee5l3m7terchpc362nbxh522ra

Resuscitation in Community Healthcare Facilities in Israel

Irena Zherebovich, Avishay Goldberg, Amir Ben Tov, Dagan Schwartz
2021 International Journal of Environmental Research and Public Health  
Few studies have evaluated the incidence and characteristics of OHCAs initially cared for by CHP, most finding improved survival.  ...  This study combined CHP treated OHCA case analysis, with assessment of provider resuscitation preparedness.  ...  Discussion This study assessed resuscitation in community healthcare facilities of a large HMO, by evaluating all reported resuscitations performed during a 2.5-year span and in parallel, assessing CPR  ... 
doi:10.3390/ijerph18126612 pmid:34205368 fatcat:6p7hgreurzb5ng4h4wrfypguoq

The Value of the Surprise Question to Predict One-Year Mortality in Idiopathic Pulmonary Fibrosis: A Prospective Cohort Study

Catharina C. Moor, Nelleke C. Tak van Jaarsveld, Catherine Owusuaa, Jelle R. Miedema, Sara Baart, Carin C.D. van der Rijt, Marlies S. Wijsenbeek
2021 Respiration  
In addition, discriminative performance of the surprise question was assessed using the C-statistic. <b><i>Results:</i></b> In total, 140 patients were included.  ...  Clinicians identified patients with a survival of &#x3c;1 year with a sensitivity of 68%, a specificity of 82%, an accuracy of 79%, a positive predictive value of 49%, and a negative predictive value of  ...  ., and M.W. drafted the manuscript, and all authors revised it critically for important intellectual content and approved the final version of the manuscript.  ... 
doi:10.1159/000516291 pmid:34044401 pmcid:PMC8491469 fatcat:6yhs5jhlk5htlf6jaopqsskvhi

Harnessing Natural Experiments to Quantify the Causal Effect of Badges [article]

Tomasz Kusmierczyk, Manuel Gomez-Rodriguez
2018 arXiv   pre-print
Moreover, for badges that successfully steered user behavior, we perform a counterfactual analysis and show that they significantly improved the functioning of the site at a community level.  ...  A wide variety of online platforms use digital badges to encourage users to take certain types of desirable actions.  ...  Acknowledgements We thank Utkarsh Upadhyay and Isabel Valera for useful discussions. References  ... 
arXiv:1707.08160v2 fatcat:hthywsja3feadjlps32spxocom

Lifelong limb preservation: A patient-centered description of lower extremity arterial reconstruction outcomes

Katie E. Shean, Peter A. Soden, Marc L. Schermerhorn, Sara L. Zettervall, Sarah E. Deery, Jeremy D. Darling, Allen Hamdan, Frank W. LoGerfo
2017 Journal of Vascular Surgery  
Using lifelong limb preservation (LLP) as an outcomes assessment provides a more accurate and patient-centered answer to the question, "If I have this procedure, will I ever lose my leg?"  ...  To better answer the question "Will I ever lose my leg?," we developed a more relevant patient-centered calculation of major amputation risk over a patient's remaining lifetime.  ...  Acknowledgments Supported by the Harvard-Longwood Research Training in Vascular Surgery NIH T32 Grant 5T32HL007734-22  ... 
doi:10.1016/j.jvs.2017.02.043 pmid:28502548 pmcid:PMC5612858 fatcat:5dnlrhkvrngb3kskcgj2p7drw4

Simple and Multistate Survival Curves

Tim Rakow, Rebecca J. Wright, Catherine Bull, David J. Spiegelhalter
2012 Medical decision making  
Statistical Analysis Data analysis was performed using Excel and SPSS software.  ...  Design, Method, and Measurements: After reading worked examples of using survival curves that provided explanation and answers, participants answered questions on survival data for pairs of treatments.  ...  Please look at the two survival curves below then answer the questions at the bottom of the page. It may sometimes be difficult to read the scale on the graph accurately.  ... 
doi:10.1177/0272989x12451057 pmid:22753419 fatcat:mgt7a764f5ftzj2iahndmgthmu

Developing Oral Placement Tests for Community-Based Language

Sheila Dermer Applebaum, Elizabeth Taborek
1986 The TESL Canada Journal  
A general overview of recent oral testing approaches will be presented and the suitability of specific tests for use in meeting the expressed needs of community agencies will be discussed.  ...  This paper will describe the steps taken in developing oral placement tests for adults in two agency-based community ESL programs.  ...  in society such as answering biographical questions.  ... 
doi:10.18806/tesl.v3i0.1006 fatcat:vem6n33kv5covhbf2paepgy44q

A Clinician's Guide to the Use of Lung Volume Reduction Surgery

G. J. Criner, A. L. Sternberg
2008 Proceedings of the American Thoracic Society online  
Last, some of the data analysis methods used to identify these criteria may be unfamiliar to the practicing physician.  ...  It is hoped that answers from NETT investigators to some of these commonly encountered questions will provide clarity and guidance to clinicians faced with the responsibility of considering and discussing  ...  Although NETT demonstrated the value of chest CT analysis in predicting patient outcome and response to therapy, much work needs to be done to answer the above questions and others to make this an effective  ... 
doi:10.1513/pats.200709-151et pmid:18453356 pmcid:PMC2645320 fatcat:qqtii73pevat3puev4rnhaexzm

Assessing minimal medical statistical literacy using the Quick Risk Test: a prospective observational study in Germany

Mirjam Annina Jenny, Niklas Keller, Gerd Gigerenzer
2018 BMJ Open  
(median=50%) of the questions correctly while senior educators answered three-quarters correctly (median=75%).  ...  Objectives To assess minimal medical statistical literacy in medical students and senior educators using the 10-item Quick Risk Test; to assess whether deficits in statistical literacy are stable or can  ...  Acknowledgements The authors would like to thank Clara Schirren for testing the senior educators and Jana Hinneburg, Felix Rebitschek and Anna Held for their input concerning the wording of the items in  ... 
doi:10.1136/bmjopen-2017-020847 pmid:30139896 pmcid:PMC6112405 fatcat:6rzkjcvc5rbabgcgey3gn5k7oe

The influence of the media on COPD patients' knowledge regarding cardiopulmonary resuscitation

S Nava
2008 International Journal of COPD  
health-oriented newspapers, use of the internet, age, educational level, and the presence of CRF.  ...  Objectives: We wanted to assess whether patients' knowledge about CPR survival and outcomes was related to presentation by the media.  ...  Bivariate Pearson's correlations were performed to assess the association between the number of right answers to the fi rst 3 questions and the frequency of media exposition.  ... 
doi:10.2147/copd.s1805 pmid:18686738 pmcid:PMC2629960 fatcat:eblbmxg4uvdblgbfq6rftnjixq

Cranial irradiation in small cell lung cancer

A Gregor
1991 British Journal of Cancer  
The individual trials are far too small to answer this question convincingly and collective data analysis may be hampered by the variety of prognostic factors which may have more powerful effects on survival  ...  The survival question No individual randomised trial or collective data analysis has shown any survival benefit for PCI treated patients. This fact is often used as a strong argument against its use.  ... 
doi:10.1038/bjc.1991.5 pmid:1846550 pmcid:PMC1971661 fatcat:ifjzcm7sq5fbjckw4hd22grgdq

Cardiac Arrest and Cardiopulmonary Resuscitation (CPR) Knowledge at an Academic Research Organization in Durham, NC

Anderson ML Pathman J
2015 Emergency Medicine Open Access  
Employees who participated in manikin practice, compared with those who did not, were more likely to correctly answer CPR-performance questions.  ...  Objectives: Bystander cardiopulmonary resuscitation (CPR) is critical in the chain of survival for out-of-hospital cardiac arrest. In the United States, overall survival remains 7%-8%.  ...  Practice with a coach did not influence answers to questions about CPR knowledge, gasping, use of CPR in children, benefit versus harm for use of CPR, and knowledge of Good Samaritan laws (Table 3) .  ... 
doi:10.4172/2165-7548.1000266 fatcat:cto3titb4bfirhx5alyebmnaw4
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