Part B: Evaluating Concordance Measures via a Tensor Approximation of Generalized Correlated Diffusions

2016 ◽  
Author(s):  
Antonio Dalessandro ◽  
Gareth William Peters
Keyword(s):  
Tensor Approximation ◽  
Concordance Measures

Concordance measures and time-dependent ROC methods

2021 ◽  
pp. 1-18
Author(s):  
Norberto Pantoja-Galicia ◽  
Olivia I. Okereke ◽  
Deborah Blacker ◽  
Rebecca A. Betensky
Keyword(s):  
Time Dependent ◽  
Concordance Measures

scholarly journals Computation of low-rank tensor approximation under existence constraint via a forward-backward algorithm

2021 ◽  
pp. 108178
Author(s):  
Marouane Nazih ◽  
Khalid Minaoui ◽  
Elaheh Sobhani ◽  
Pierre Comon
Keyword(s):  
Low Rank ◽  
Rank Tensor ◽  
Tensor Approximation

The Value of Incorporating Measures of Relationship Concordance When Constructing Profiles of Intimate Partner Homicides: A Descriptive Study of IPH Committed Within London, 1998-2009

2015 ◽  
Vol 32 (10) ◽  
pp. 1476-1500 ◽  
Author(s):  
Jacqueline Sebire
Keyword(s):  
Employment Status ◽  
Descriptive Study ◽  
Intimate Partner ◽  
Health Issues ◽  
Criminal Convictions ◽  
Female Perpetrators ◽  
Gender Based ◽  
Concordance Measures ◽  
The Relationship ◽  
Insight Into

This article presents a profile of intimate partner homicides (IPH) committed within London incorporating a gendered comparison of the perpetrators’ relationships. Data was sourced from the original police files for offenses committed in the capital between 1998 and 2009 ( N = 207; 173 male and 34 female perpetrators). In common with other international descriptive studies, the results indicate comparative differences between partners according to perpetrator gender in terms of age profiles, employment status, experience of mental health issues, intoxication at time of killing, and possession of criminal convictions. Gender-based IPH descriptive studies have tended to focus on a collation of either victim or perpetrator or relationship characteristics, often in isolation from one another. Assessments of how parties interact within fatal relationships are invariably absent, and yet, it is the relationship that forms the backdrop against which the fatal acts are perpetrated. This study, therefore, not only provides an insight into the profile of IPH committed within London where none had previously existed but also demonstrates the advantages of incorporating relationship concordance measures. The inclusion of such measures when researching IPH assists homicide investigators in understanding the dynamics taking place within the cohort of fatal relationships they police. It also provides researchers a useful platform to enhance understanding of this crucial aspect, for it is the relationship itself which is what defines IPH and distinguishes as a unique subset of homicide.

Interpretation of concordance measures for clustered data

2014 ◽  
Vol 33 (4) ◽  
pp. 714-716 ◽  
Author(s):  
David van Klaveren ◽  
Ewout W. Steyerberg ◽  
Yvonne Vergouwe
Keyword(s):  
Clustered Data ◽  
Concordance Measures

scholarly journals Quantifying Donor Effects on Transplant Outcomes Using Kidney Pairs from Deceased Donors

2019 ◽  
Vol 14 (12) ◽  
pp. 1781-1787
Author(s):  
Kathleen F. Kerr ◽  
Eric R. Morenz ◽  
Heather Thiessen-Philbrook ◽  
Steven G. Coca ◽  
F. Perry Wilson ◽  
...  
Keyword(s):  
Relative Risk ◽  
Clinical Outcomes ◽  
Graft Failure ◽  
Absolute Risk ◽  
Graft Function ◽  
Delayed Graft Function ◽  
Kidney Donor ◽  
Excess Absolute Risk ◽  
Deceased Donors ◽  
Concordance Measures

Background and objectivesIn kidney transplantation, the relative contribution of donor versus other factors on clinical outcomes is unknown. We sought to quantify overall donor effects on transplant outcomes for kidney donations from deceased donors.Design, setting, participants, & measurementsFor paired donations from deceased donors resulting in transplants to different recipients, the magnitude of donor effects can be quantified by examining the excess of concordant outcomes within kidney pairs beyond chance concordance. Using data from the Organ Procurement and Transplantation Network between the years 2013 and 2017, we examined concordance measures for delayed graft function, death-censored 1-year graft failure, and death-censored 3-year graft failure. The concordance measures were excess relative risk, excess absolute risk, and the fixation index (where zero is no concordance and one is perfect concordance). We further examined concordance in strata of kidneys with similar values of the Kidney Donor Profile Index, a common metric of organ quality.ResultsIf the transplant of the kidney mate resulted in delayed graft function, risk for delayed graft function was 19% higher (95% confidence interval [95% CI], 18% to 20%), or 1.76-fold higher (95% CI, 1.73- to 1.80-fold), than baseline. If a kidney graft failed within 1 year, then the kidney mate’s risk of failure was 6% higher (95% CI, 4% to 9%), or 2.85-fold higher (95% CI, 2.25- to 3.48-fold), than baseline. For 3-year graft failure, the excess absolute risk was 7% (95% CI, 4% to 10%) but excess relative risk was smaller, 1.91-fold (95% CI, 1.56- to 2.28-fold). Fixation indices were 0.25 for delayed graft function (95% CI, 0.24 to 0.27), 0.07 for 1-year graft failure (95% CI, 0.04 to 0.09), and 0.07 for 3-year graft failure (95% CI, 0.04 to 0.10). Results were similar in strata of kidneys with a similar Kidney Donor Profile Index.ConclusionsOverall results indicated that the donor constitution has small or moderate effect on post-transplant clinical outcomes.

Assessing guideline-concordant care for patients with multimorbidity treated in a care management setting

2020 ◽  
Vol 37 (4) ◽  
pp. 479-485
Author(s):  
Chandra J Cohen-Stavi ◽  
Calanit Key ◽  
Shmuel Giveon ◽  
Tchiya Molcho ◽  
Ran D Balicer ◽  
...  
Keyword(s):  
Chronic Conditions ◽  
Care Management ◽  
Patient Characteristics ◽  
Management Program ◽  
Recommended Care ◽  
Morbidity Burden ◽  
Care Processes ◽  
Care Management Program ◽  
Concordance Measures ◽  
Multimorbid Patients

Abstract Background Disease-specific guidelines are not aligned with multimorbidity care complexity. Meeting all guideline-recommended care for multimorbid patients has been estimated but not demonstrated across multiple guidelines. Objective Measure guideline-concordant care for patients with multimorbidity; assess in what types of care and by whom (clinician or patient) deviation from guidelines occurs and evaluate whether patient characteristics are associated with concordance. Methods A retrospective cohort study of care received over 1 year, conducted across 11 primary care clinics within the context of multimorbidity-focused care management program. Patients were aged 45+ years with more than two common chronic conditions and were sampled based on either being new (≤6 months) or veteran to the program (≥1 year). Measures Three guideline concordance measures were calculated for each patient out of 44 potential guideline-recommended care processes for nine chronic conditions: overall score; referral score (proportion of guideline-recommended care referred) and patient-only score (proportion of referred care completed by patients). Guideline concordance was stratified by care type. Results 4386 care processes evaluated among 204 patients, mean age = 72.3 years (standard deviation = 9.7). Overall, 79.2% of care was guideline concordant, 87.6% was referred according to guidelines and patients followed 91.4% of referred care. Guideline-concordant care varied across care types. Age, morbidity burden and whether patients were new or veteran to the program were associated with guideline concordance. Conclusions Patients with multimorbidity do not receive ~20% of guideline recommendations, mostly due to clinicians not referring care. Determining the types of care for which the greatest deviation from guidelines exists can inform the tailoring of care for multimorbidity patients.

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