keyword
MENU ▼
Read by QxMD icon Read
search

Precision medicine statistics

keyword
https://www.readbyqxmd.com/read/28818163/evaluation-of-ckd-epi-pakistan-equation-for-estimated-glomerular-filtration-rate-egfr-acomparison-of-egfr-prediction-equations-in-pakistani-population
#1
Sibtain Ahmed, Lena Jafri, Aysha Habib Khan
OBJECTIVE: To evaluate the results of 24-hour urinary creatinine clearance (CrCl) with estimated glomerular filtration rate (eGFR) using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI), CKD-EPI Pakistan (CKD-EPI Pak), Cockcroft Gault (CG) and 4-variable Modification of Diet in Renal Disease (MDRD) equations. STUDY DESIGN: Descriptive, cross-sectional study. PLACE AND DURATION OF STUDY: Section of Clinical Chemistry, Department of Pathology and Laboratory Medicine, The Aga Khan University, Karachi, from June to October 2013...
July 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28817531/bias-confounding-and-interaction-lions-and-tigers-and-bears-oh-my
#2
Thomas R Vetter, Edward J Mascha
Epidemiologists seek to make a valid inference about the causal effect between an exposure and a disease in a specific population, using representative sample data from a specific population. Clinical researchers likewise seek to make a valid inference about the association between an intervention and outcome(s) in a specific population, based upon their randomly collected, representative sample data. Both do so by using the available data about the sample variable to make a valid estimate about its corresponding or underlying, but unknown population parameter...
September 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28815099/enabling-comprehension-of-patient-subgroups-and-characteristics-in-large-bipartite-networks-implications-for-precision-medicine
#3
Suresh K Bhavnani, Tianlong Chen, Archana Ayyaswamy, Shyam Visweswaran, Gowtham Bellala, Divekar Rohit, Bassler Kevin E
A primary goal of precision medicine is to identify patient subgroups based on their characteristics (e.g., comorbidities or genes) with the goal of designing more targeted interventions. While network visualization methods such as Fruchterman-Reingold have been used to successfully identify such patient subgroups in small to medium sized data sets, they often fail to reveal comprehensible visual patterns in large and dense networks despite having significant clustering. We therefore developed an algorithm called ExplodeLayout, which exploits the existence of significant clusters in bipartite networks to automatically "explode" a traditional network layout with the goal of separating overlapping clusters, while at the same time preserving key network topological properties that are critical for the comprehension of patient subgroups...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28801740/a-statistical-classifier-to-support-diagnose-meningitis-in-less-developed-areas-of-brazil
#4
Viviane-Maria Lélis, Eduardo Guzmán, María-Victoria Belmonte
This paper describes the development of statistical classifiers to help diagnose meningococcal meningitis, i.e. the most sever, infectious and deadliest type of this disease. The goal is to find a mechanism able to determine whether a patient has this type of meningitis from a set of symptoms that can be directly observed in the earliest stages of this pathology. Currently, in Brazil, a country that is heavily affected by meningitis, all suspected cases require immediate hospitalization and the beginning of a treatment with invasive tests and medicines...
August 11, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28800528/comparison-of-three-officinal-species-of-callicarpa-based-on-a-biochemome-profiling-strategy-with-uhplc-it-ms-and-chemometrics-analysis
#5
Meng-Lu Chen, Wen-Qi Chang, Jian-Liang Zhou, Ying-Hao Yin, Wen-Rui Xia, Jian-Qun Liu, Li-Fang Liu, Gui-Zhong Xin
Traditional Chinese medicine (TCM) materials with closely related species are frequently fungible in clinical use. Therefore, holistic comparison of the composition in bioactive compounds is essential to evaluate whether they are equivalent in efficacy. Taking three officinal species of Callicarpa as a case, we proposed and validated a standardized strategy for the discrimination of closely related TCM materials, which focused on the extraction, profiling and multivariate statistical analysis of their biochemome...
August 1, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28792519/dominance-and-leadership-in-research-activities-collaboration-between-countries-of-differing-human-development-is-reflected-through-authorship-order-and-designation-as-corresponding-authors-in-scientific-publications
#6
Gregorio González-Alcaide, Jinseo Park, Charles Huamaní, José M Ramos
INTRODUCTION: Scientific collaboration is an important mechanism that enables the integration of the least developed countries into research activities. In the present study, we use the order of author signatures and addresses for correspondence in scientific publications as variables to analyze the interactions between countries of very high (VHHD), high (HHD), medium (MHD), and low human development (LHD). METHODOLOGY: We identified all documents published between 2011 and 2015 in journals included in the Science Citation Index-Expanded categories' of Tropical Medicine, Infectious Diseases, Parasitology, and Pediatrics...
2017: PloS One
https://www.readbyqxmd.com/read/28791469/evaluation-of-the-neo-umbilicus-cutaneous-sensitivity-following-abdominoplasty
#7
Mathias Tremp, Wenjin Wang, Carlo M Oranges, Dirk J Schaefer, Wei Wang, Daniel F Kalbermatten
BACKGROUND: Abdominal cutaneous sensitivity loss after abdominoplasty is an undesirable outcome. However, little is known in the literature about sensitivity changes of the neo-umbilicus after abdominoplasty. The aim of this study was to evaluate post-abdominoplasty cutaneous sensitivity of the neo-umbilicus using clinical, quantitative, and reproducible methods. METHODS: Patients who underwent abdominoplasty were included, whereas the control group consisted of healthy volunteers with similar demographic characteristics but who did not undergo abdominoplasty...
August 8, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28789968/b-cell-phenotypes-signaling-and-their-roles-in-secretion-of-antibodies-in-systemic-lupus-erythematosus
#8
Yoshiya Tanaka, Satoshi Kubo, Shigeru Iwata, Maiko Yoshikawa, Shingo Nakayamada
B cells play a pivotal role in the initiation and perpetuation of SLE. Because SLE is molecularly and clinically heterogeneous, efficacious targeted therapy to clinical remission has not yet been established in SLE. We have found i) statistical clustering between Tfh cells and class-switched memory B cells and the upregulated transition from CXCR5(+) IgM memory B cells to CXCR3(+) class-switched memory B cells in SLE by 8-color flow cytometry, ii) the involvement of Syk, Btk and JAK in the activation and differentiation of B cells in SLE, iii) SLE patients was divided to 3 groups based on immunophenotypic analysis and statistical analysis and patients in the Tfh/class-switched B cell-dominant group were most refractory to conventional therapies although 3 groups had similar clinical features...
August 5, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28783764/prognosis-impact-of-clinical-characteristics-in-patients-with-inoperable-esophageal-squamous-cell-carcinoma
#9
Ying Yang, Jun Jia, Zhiwei Sun, Feng Du, Jing Yu, Chuanling Liu, Yanjie Xiao, Xiaodong Zhang
BACKGROUND: Patients with inoperable esophageal squamous cell carcinoma (ESCC) were not homogeneous and their outcomes were widely divergent. There was a lack of identified clinical factors related to prognosis; and there were no previous studies constructing prognosis score to predict survival and guide treatment. METHODS: In this retrospective cohort study, twelve clinical characteristics of one hundred and twenty inoperable ESCC patients were collected at diagnosis and analyzed by Cox regression model...
2017: PloS One
https://www.readbyqxmd.com/read/28759005/bayesian-analysis-of-genetic-association-across-tree-structured-routine-healthcare-data-in-the-uk-biobank
#10
Adrian Cortes, Calliope A Dendrou, Allan Motyer, Luke Jostins, Damjan Vukcevic, Alexander Dilthey, Peter Donnelly, Stephen Leslie, Lars Fugger, Gil McVean
Genetic discovery from the multitude of phenotypes extractable from routine healthcare data can transform understanding of the human phenome and accelerate progress toward precision medicine. However, a critical question when analyzing high-dimensional and heterogeneous data is how best to interrogate increasingly specific subphenotypes while retaining statistical power to detect genetic associations. Here we develop and employ a new Bayesian analysis framework that exploits the hierarchical structure of diagnosis classifications to analyze genetic variants against UK Biobank disease phenotypes derived from self-reporting and hospital episode statistics...
July 31, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28745447/commentary-perspectives-on-alcohol-related-gene-and-environment-interplay-in-diverse-populations
#11
Marcia S Scott
BACKGROUND AND OBJECTIVES: Racial/ethnic groups comprise more than 20% of the U.S. population, but many experience disproportionately high risk for alcohol misuse, often resulting in higher rates of alcohol-associated consequences. Completion of mapping the human genome has launched rapidly evolving research methods aimed at improved understanding of genetic contribution to disease. Despite decades of research on the influence of genetic and environmental risks on alcohol use disorders and outcomes, few studies have included racial/ethnic subpopulations in sufficient numbers to allow for proper statistical analysis...
August 2017: American Journal on Addictions
https://www.readbyqxmd.com/read/28729710/learning-a-health-knowledge-graph-from-electronic-medical-records
#12
Maya Rotmensch, Yoni Halpern, Abdulhakim Tlimat, Steven Horng, David Sontag
Demand for clinical decision support systems in medicine and self-diagnostic symptom checkers has substantially increased in recent years. Existing platforms rely on knowledge bases manually compiled through a labor-intensive process or automatically derived using simple pairwise statistics. This study explored an automated process to learn high quality knowledge bases linking diseases and symptoms directly from electronic medical records. Medical concepts were extracted from 273,174 de-identified patient records and maximum likelihood estimation of three probabilistic models was used to automatically construct knowledge graphs: logistic regression, naive Bayes classifier and a Bayesian network using noisy OR gates...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28727716/the-relationship-between-body-mass-index-and-fluoroscopy-time-during-intraarticular-hip-injection-a-multicenter-cohort-study
#13
Zachary L McCormick, Meghan Bhave, David T Lee, Paul Scholten, Samuel K Chu, Ashwin N Babu, Mary Caldwell, Craig Ziegler, Humaira Ashraf, Ryan Clark, Claire Gross, Jeffrey Cara, Kristen McCormick, Brendon Ross, Joel Press, David R Walega, Daniel Cushman
BACKGROUND: Higher body mass index (BMI) is associated with difficulty in obtaining imaging studies. While there is a small body of literature regarding the relationship between fluoroscopy time and BMI during injections for pain management, this has not been studied for intraarticular (IA) hip injections. Further, in academic training centers, trainee involvement may affect this relationship. OBJECTIVE: To determine the relationship between BMI and fluoroscopy time during IA hip injections, both with and without involvement of a trainee...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28725962/optimal-positioning-of-the-nipple-areola-complex-in-men-using-the-mohrenheim-estimated-tangential-tracking-line-mett-line-an-intuitive-approach
#14
Tobias R Mett, Nicco Krezdorn, Rosalia Luketina, Maria K Boyce, Helga Henseler, Ramin Ipaktchi, Peter M Vogt
INTRODUCTION: The reconstruction of the body shape after post-bariatric surgery or high-grade gynecomastia involves, besides skin tightening, the repositioning of anatomical, apparent landmarks. The surgeon usually defines these during the preoperative planning. In particular, the positions of the nipple-areola complexes (NAC) should contribute to the gender-appropriate appearance. While in the female breast numerous methods have been developed to determine the optimal position of the NACs, there are only a few, metric and often impractical algorithms for positioning the nipples and areoles in the male...
July 19, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28699564/detecting-clinically-relevant-new-information-in-clinical-notes-across-specialties-and-settings
#15
Rui Zhang, Serguei V S Pakhomov, Elliot G Arsoniadis, Janet T Lee, Yan Wang, Genevieve B Melton
BACKGROUND: Automated methods for identifying clinically relevant new versus redundant information in electronic health record (EHR) clinical notes is useful for clinicians and researchers involved in patient care and clinical research, respectively. We evaluated methods to automatically identify clinically relevant new information in clinical notes, and compared the quantity of redundant information across specialties and clinical settings. METHODS: Statistical language models augmented with semantic similarity measures were evaluated as a means to detect and quantify clinically relevant new and redundant information over longitudinal clinical notes for a given patient...
July 5, 2017: BMC Medical Informatics and Decision Making
https://www.readbyqxmd.com/read/28697713/an-update-of-the-italian-stroke-organization-stroke-prevention-awareness-diffusion-group-guidelines-on-carotid-endarterectomy-and-stenting-a-personalized-medicine-approach
#16
Gaetano Lanza, Carlo Setacci, Stefano Ricci, Patrizio Castelli, Alberto Cremonesi, Jessica Lanza, Claudio Novali, Carlo Pratesi, Paola Santalucia, Francesco Speziale, Augusto Zaninelli, Gian Franco Gensini
Although proof-based medicine has generated much valid evidence for the drawing up of guidelines and recommendations for best clinical practice in symptomatic and asymptomatic carotid stenosis, whether and when it is better to employ endarterectomy or stenting as the intervention of choice still remain matters of debate. Moreover, guidelines have been targeted up to now to the 'representative' patient, as resulting from the statistical analyses of the studies conducted on the safety and efficacy of both interventions as well as on medical therapy alone...
July 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28686320/the-emerging-science-of-precision-medicine-and-pharmacogenomics-for-parkinson-s-disease
#17
Haydeh Payami
Current therapies for Parkinson's disease are problematic because they are symptomatic and have adverse effects. New drugs have failed in clinical trials because of inadequate efficacy. At the core of the problem is trying to make one drug work for all Parkinson's disease patients, when we know this premise is wrong because (1) Parkinson's disease is not a single disease, and (2) no two individuals have the same biological makeup. Precision medicine is the goal to strive for, but we are only at the beginning stages of building the infrastructure for one of the most complex projects in the history of science, and it will be a long time before Parkinson's disease reaps the benefits...
July 7, 2017: Movement Disorders: Official Journal of the Movement Disorder Society
https://www.readbyqxmd.com/read/28665803/methylation-differences-reveal-heterogeneity-in-preterm-pathophysiology-results-from-bipartite-network-analyses
#18
Suresh K Bhavnani, Bryant Dang, Varun Kilaru, Maria Caro, Shyam Visweswaran, George Saade, Alicia K Smith, Ramkumar Menon
BACKGROUND: Recent studies have shown that epigenetic differences can increase the risk of spontaneous preterm birth (PTB). However, little is known about heterogeneity underlying such epigenetic differences, which could lead to hypotheses for biological pathways in specific patient subgroups, and corresponding targeted interventions critical for precision medicine. Using bipartite network analysis of fetal DNA methylation data we demonstrate a novel method for classification of PTB. METHODS: The data consisted of DNA methylation across the genome (HumanMethylation450 BeadChip) in cord blood from 50 African-American subjects consisting of 22 cases of early spontaneous PTB (24-34 weeks of gestation) and 28 controls (>39 weeks of gestation)...
June 30, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28650955/netnorm-capturing-cancer-relevant-information-in-somatic-exome-mutation-data-with-gene-networks-for-cancer-stratification-and-prognosis
#19
Marine Le Morvan, Andrei Zinovyev, Jean-Philippe Vert
Genome-wide somatic mutation profiles of tumours can now be assessed efficiently and promise to move precision medicine forward. Statistical analysis of mutation profiles is however challenging due to the low frequency of most mutations, the varying mutation rates across tumours, and the presence of a majority of passenger events that hide the contribution of driver events. Here we propose a method, NetNorM, to represent whole-exome somatic mutation data in a form that enhances cancer-relevant information using a gene network as background knowledge...
June 2017: PLoS Computational Biology
https://www.readbyqxmd.com/read/28649647/moonshots-and-metastatic-disease-the-need-for-a-multi-faceted-approach-when-studying-atypical-responses
#20
REVIEW
Kristine De La Torre, Elly Cohen, Anne Loeser, Marc Hurlbert
Clinical research generally focuses on results involving a statistical mean with little attention in trial design to patients who respond considerably better or worse than average. Exploring the reasons underlying an "atypical response" will increase understanding of the mechanisms involved in cancer progression and treatment resistance, accelerate biomarker identification, and improve precision medicine by allowing clinicians to prospectively select optimal treatments. Based on our review, we suggest two ways to move this field forward...
2017: NPJ Breast Cancer
keyword
keyword
82000
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"