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Population segmentation

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https://www.readbyqxmd.com/read/27910110/runs-of-homozygosity-current-knowledge-and-applications-in-livestock
#1
REVIEW
E Peripolli, D P Munari, M V G B Silva, A L F Lima, R Irgang, F Baldi
This review presents a broader approach to the implementation and study of runs of homozygosity (ROH) in animal populations, focusing on identifying and characterizing ROH and their practical implications. ROH are continuous homozygous segments that are common in individuals and populations. The ability of these homozygous segments to give insight into a population's genetic events makes them a useful tool that can provide information about the demographic evolution of a population over time. Furthermore, ROH provide useful information about the genetic relatedness among individuals, helping to minimize the inbreeding rate and also helping to expose deleterious variants in the genome...
December 1, 2016: Animal Genetics
https://www.readbyqxmd.com/read/27908444/clinical-application-of-apparent-diffusion-coefficient-mapping-in-voxel-based-morphometry-in-the-diagnosis-of-alzheimer-s-disease
#2
H Takahashi, K Ishii, N Kashiwagi, Y Watanabe, H Tanaka, T Murakami, N Tomiyama
AIM: To evaluate the performance of apparent diffusion coefficient (ADC) mapping compared with voxel-based morphometry and to demonstrate the clinical usefulness of ADC mapping in the diagnosis of Alzheimer's disease (AD). MATERIALS AND METHODS: The study population comprised 31 patients with AD (group A) and 24 patients without dementia (group B) who underwent three-dimensional (3D) T1-weighted imaging (WI) and two-dimensional (2D) echo-planar diffusion-weighted imaging (DWI) at 3 T...
November 28, 2016: Clinical Radiology
https://www.readbyqxmd.com/read/27907885/complete-revascularization-versus-culprit-only-revascularization-in-st-segment-elevation-myocardial-infarction-and-multivessel-disease-patients-undergoing-primary-percutaneous-coronary-intervention-a-meta-analysis-and-trial-sequential-analysis
#3
REVIEW
Chong-Hui Wang, Shu-Yang Zhang, Xiao-Feng Jin
The present study compared the outcomes of complete revascularization (CR) and culprit-only revascularization (COR) performed during primary percutaneous coronary intervention (PCI) in patients with ST-segment elevation myocardial infarction (STEMI) and multivessel disease through a meta-analysis in order to determine which strategy is more appropriate. Published randomized controlled trials (RCTs) were retrieved from the PubMed, EMBASE, and CENTRAL databases. Eight RCTs with 2060 patients were selected (1080 patients underwent CR [immediate (ICR) or staged (SCR)] and 980 patients underwent COR)...
November 10, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27907128/fasa-registry-on-acute-myocardial-infarction-farmi-feasibility-study-and-pilot-phase-results
#4
Ehsan Bahramali, Alireza Askari, Habib Zakeri, Mojtaba Farjam, Azizallah Dehghan, Kazem Zendehdel
BACKGROUND: Myocardial infarction (MI) is the leading cause of death in Iran. Every attempt to improve treatment patterns and patient outcomes needs a surveillance system to both consider the efficacy and safety measures. Fasa Registry on Myocardial Infarction (FaRMI) is the first population-based registry for acute MI in Iran targeted to provide meticulous description of patients' characteristics, to explore the management patterns of these patients, to discover the degree of adherence to the practice guidelines, and to investigate the determinants of poor in-hospital and later outcomes...
2016: PloS One
https://www.readbyqxmd.com/read/27906004/a-quantitative-evidence-base-for-population-health-applying-utilization-based-cluster-analysis-to-segment-a-patient-population
#5
Sabine I Vuik, Erik Mayer, Ara Darzi
BACKGROUND: To improve population health it is crucial to understand the different care needs within a population. Traditional population groups are often based on characteristics such as age or morbidities. However, this does not take into account specific care needs across care settings and tends to focus on high-needs patients only. This paper explores the potential of using utilization-based cluster analysis to segment a general patient population into homogenous groups. METHODS: Administrative datasets covering primary and secondary care were used to construct a database of 300,000 patients, which included socio-demographic variables, morbidities, care utilization, and cost...
November 25, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905975/health-profile-of-centenarians-in-portugal-a-census-based-approach
#6
Oscar Ribeiro, Laetitia Teixeira, Lia Araújo, Constança Paúl
BACKGROUND: The number of centenarians is rapidly increasing in Europe. In Portugal, it has almost tripled over the last 10 years and constitutes one of the fastest-growing segments of the population. This paper aims to describe the health and sociodemographic characteristics of Portuguese centenarians as given in the 2011 census and to identify sex differences. METHODS: All persons living in Portugal mainland and Madeira and Azores islands aged 100 years old at the time of the 2011 census (N = 1,526) were considered...
April 12, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905307/oriental-cholangiohepatitis-recurrent-pyogenic-cholangitis-a-case-series-from-the-netherlands-and-brief-review-of-the-literature
#7
K E Verweij, H van Buuren
Oriental cholangiohepatitis is a condition occurring in the Asian population, characterised by recurrent bacterial cholangitis and presence of calculi within the intrahepatic bile ducts, biliary strictures and an increased risk for cholangiocarcinoma. It is an uncommon disease in the West that may not always be considered. The therapeutic approach is multidisciplinary and highly individual, and includes antibiotic therapy, endoscopic and percutaneous biliary drainage with stone removal and dilation of strictures, and in selected cases surgical resection of affected liver segments...
November 2016: Netherlands Journal of Medicine
https://www.readbyqxmd.com/read/27904220/pfna-ii-protrusion-over-the-greater-trochanter-in-the-asian-population-used-in-proximal-femoral-fractures
#8
Sun-Jun Hu, Shi-Min Chang, Zhuo Ma, Shou-Chao Du, Liang-Ping Xiong, Xin Wang
BACKGROUND: The treatment of proximal femoral fractures in geriatric osteoporotic patients continues to be a challenge in orthopaedic trauma. Various kinds of cephalomedullary nails, such as gamma nail, InterTan and PFNA were used clinically. The latest generation PFNA II, specially designed for Asian population, is commonly used for geriatric per-/intertrochanteric fractures. The aim of this study was to determine whether the current PFNA-II proximal segment length is suitable for the greater trochanter height, as assessed by postoperative radiograph measurements...
November 2016: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/27904152/mitochondrial-dna-diversity-of-present-day-aboriginal-australians-and-implications-for-human-evolution-in-oceania
#9
Nano Nagle, Kaye N Ballantyne, Mannis van Oven, Chris Tyler-Smith, Yali Xue, Stephen Wilcox, Leah Wilcox, Rust Turkalov, Roland A H van Oorschot, Sheila van Holst Pellekaan, Theodore G Schurr, Peter McAllister, Lesley Williams, Manfred Kayser, R John Mitchell
Aboriginal Australians are one of the more poorly studied populations from the standpoint of human evolution and genetic diversity. Thus, to investigate their genetic diversity, the possible date of their ancestors' arrival and their relationships with neighboring populations, we analyzed mitochondrial DNA (mtDNA) diversity in a large sample of Aboriginal Australians. Selected mtDNA single-nucleotide polymorphisms and the hypervariable segment haplotypes were analyzed in 594 Aboriginal Australians drawn from locations across the continent, chiefly from regions not previously sampled...
December 1, 2016: Journal of Human Genetics
https://www.readbyqxmd.com/read/27904028/prognostic-value-of-eosinophil-to-leukocyte-ratio-in-patients-with-st-elevation-myocardial-infarction-undergoing-primary-percutaneous-coronary-intervention
#10
Takao Konishi, Naohiro Funayama, Tadashi Yamamoto, Toru Morita, Daisuke Hotta, Hiroshi Nishihara, Shinya Tanaka
AIM: Leukocyte profile has been related to clinical outcome in patients with ST-segment elevation (STE) myocardial infarction (MI). However, whether eosinophil to leukocyte ratio (ELR) predicts clinical outcome in patients who have undergone primary percutaneous coronary intervention (PCI) remains unclear. Therefore, we examined the prognostic value of ELR in this patient population. METHODS: We retrospectively analyzed the data of 331 consecutive patients who underwent primary PCI for STEMI between January 2009 and March 2015...
December 1, 2016: Journal of Atherosclerosis and Thrombosis
https://www.readbyqxmd.com/read/27901240/prevalence-of-chronic-spinal-pain-and-identification-of-associated-factors-in-a-sample-of-the-population-of-s%C3%A3-o-paulo-brazil-cross-sectional-study
#11
Jidiene Dylese Presecatan Depintor, Eduardo Sawaya Botelho Bracher, Dayane Maia Costa Cabral, José Eluf-Neto
CONTEXT AND OBJECTIVE: Chronic spinal pain, especially low-back pain and neck pain, is a leading cause of years of life with disability. The aim of the present study was to estimate the prevalence of chronic spinal pain among individuals aged 15 years or older and to identify the factors associated with it. DESIGN AND SETTING: Cross-sectional epidemiological study on a sample of the population of the city of São Paulo. METHOD: Participants were selected using random probabilistic sampling and data were collected via face-to-face interviews...
September 2016: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/27900642/ischemia-burden-on-stress-spect-mpi-predicts-long-term-outcomes-after-revascularization-in-stable-coronary-artery-disease
#12
Hendrik J Boiten, Jan C van den Berge, Roelf Valkema, Ron T van Domburg, Felix Zijlstra, Arend F L Schinkel
BACKGROUND: It is not entirely clear whether ischemia burden on stress single-photon emission computed tomography (SPECT) effectively identifies patients who have a long-term benefit from coronary revascularization. METHODS: The study population consisted of 719 patients with ischemia on stress SPECT. Early coronary revascularization was defined as percutaneous coronary intervention or coronary artery bypass grafting ≤90 days after SPECT. Patients who underwent late revascularization (>90 days after SPECT) were excluded (n = 164)...
November 29, 2016: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/27900314/renal-and-cardiovascular-morbidities-associated-with-apol1-status-among-african-american-and-non-african-american-children-with-focal-segmental-glomerulosclerosis
#13
Robert P Woroniecki, Derek K Ng, Sophie Limou, Cheryl A Winkler, Kimberly J Reidy, Mark Mitsnefes, Matthew G Sampson, Craig S Wong, Bradley A Warady, Susan L Furth, Jeffrey B Kopp, Frederick J Kaskel
BACKGROUND AND OBJECTIVES: African-American (AA) children with focal segmental glomerulosclerosis (FSGS) have later onset disease that progresses more rapidly than in non-AA children. It is unclear how APOL1 genotypes contribute to kidney disease risk, progression, and cardiovascular morbidity in children. DESIGN SETTING PARTICIPANTS AND MEASUREMENTS: We examined the prevalence of APOL1 genotypes and associated cardiovascular phenotypes among children with FSGS in the Chronic Kidney Disease in Children (CKiD) study; an ongoing multicenter prospective cohort study of children aged 1-16 years with mild to moderate kidney disease...
2016: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/27899854/association-of-neutrophil-to-lymphocyte-ratio-with-the-severity-and-morphology-of-coronary-atherosclerotic-plaques-detected-by-multidetector-computerized-tomography
#14
Ahmet Hakan Ateş, Kudret Aytemir, Duygu Koçyiğit, Muhammed Ulvi Yalcin, Kadri Murat Gürses, Hikmet Yorgun, Uğur Canpolat, Tuncay Hazırolan, Necla Özer
BACKGROUND: Studies have demonstrated a consistent relationship between white blood cell (WBC) counts and coronary artery disease (CAD). The neutrophil/lymphocyte ratio (NLR) has been considered as a potential marker for identifying individuals under risk of CAD and associated events. In this study, we aimed to evaluate whether NLR was associated with the severity and morphology of coronary atherosclerotic plaques shown by multidetector computed tomography (MDCT). METHODS: Our study population consisted of 684 patients who underwent dual-source 64 slice MDCT for the assessment of CAD...
November 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27899428/pronounced-increase-in-risk-of-acute-st-segment-elevation-myocardial-infarction-in-younger-smokers
#15
Amelia Lloyd, Lloyd Steele, James Fotheringham, Javaid Iqbal, Ayyaz Sultan, M Dawn Teare, Ever D Grech
OBJECTIVES: Previous studies have shown that smokers presented with ST-segment elevation myocardial infarction (STEMI) a decade earlier than non-smokers. However, no account has been made for population smoking trends, an important deficit addressed by this study. METHODS: The combination of admission data on patients with acute STEMI undergoing percutaneous coronary intervention and demographic data supplied by the Office for National Statistics for the South Yorkshire population between 2009-2012 were analysed to generate incidence rates and rate ratios (RR) to quantify the relative risk of STEMI from smoking, overall and by age group...
November 29, 2016: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/27896540/variations-in-the-anatomy-of-the-vertebral-artery-cervical-loop-segment-a-potential-predisposing-factor-for-traumatic-basal-subarachnoid-hemorrhage
#16
Jonathan E Medcalf, C Paul Johnson, Azzam Taktak, Silke Grabherr
Fatal traumatic basal subarachnoid hemorrhage (TBSAH) is a characteristic forensic pathological entity, the investigation of which requires special techniques. In Liverpool, post-mortem room angiography is undertaken, followed by complete removal of the vertebral arteries and histological examination. It has been observed that the arterial anatomy can be highly variable, particularly the length and course of the loop segments located between the C2 vertebra and the dura. In a number of cases of TBSAH the loop segments of torn vessels have appeared relatively short...
November 29, 2016: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/27895353/bacterobilia-in-acute-cholecystitis-bile-cultures-isolates-antibiotic-sensitivities-and-antibiotic-usage-a-study-on-a-pakistani-population
#17
Yousaf Bashir Hadi, Muhammad Waqas, Hafiz Muhammad Umer, Ammar Alam, Abdul Rehman Alvi, Muhammad Rizwan Khan
Acute cholecystitis is one of the most common acute surgical conditions. Laparoscopic cholecystectomy remains the mainstay of treatment. In patients managed non-operatively, antibiotics play an important role in the treatment of cholecystitis. The current retrospective observational study was conducted at a tertiary care hospital in Karachi, and comprised medical records of patients admitted between 2008 and 2014with acute cholecystitis and in whom bile cultures were obtained. Of the 509 patients with a mean age of 51...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27893566/validity-and-reliability-of-a-portable-balance-tracking-system-btracks-in-older-adults
#18
Susan S Levy, Katie J Thralls, Shiloah A Kviatkovsky
BACKGROUND AND PURPOSE: Falls are the leading cause of disability, injury, hospital admission, and injury-related death among older adults. Balance limitations have consistently been identified as predictors of falls and increased fall risk. Field measures of balance are limited by issues of subjectivity, ceiling effects, and low sensitivity to change. The gold standard for measuring balance is the force plate; however, its field use is untenable due to high cost and lack of portability...
November 23, 2016: Journal of Geriatric Physical Therapy
https://www.readbyqxmd.com/read/27893283/driver-speed-selection-on-high-speed-two-lane-highways-comparing-speed-profiles-between-uniform-and-differential-speed-limits
#19
Brendan J Russo, Peter T Savolainen, Timothy J Gates, Jonathan J Kay, Sterling Frazier
OBJECTIVE: Although a considerable amount of prior research has investigated the impacts of speed limits on traffic safety and operations, much of this research, and nearly all of the research related to differential speed limits, has been specific to limited access freeways. The unique safety and operational issues on highways without access control creates difficulty relating the conclusions from prior freeway-related speed limit research to two-lane highways, particularly research on differential limits due to passing limitations and subsequent queuing...
November 28, 2016: Traffic Injury Prevention
https://www.readbyqxmd.com/read/27893097/benefit-of-measuring-anterior-segment-structures-using-an-increased-number-of-optical-coherence-tomography-images-the-chinese-american-eye-study
#20
Benjamin Y Xu, Paul Israelsen, Billy X Pan, Dandan Wang, Xuejuan Jiang, Rohit Varma
Purpose: The purpose of this study was to evaluate the benefit of analyzing an increased number of anterior segment optical coherence tomography (AS-OCT) images on measurement values of various anterior segment parameters. Methods: Subjects for this cross-sectional study were recruited from the Chinese American Eye Study (CHES), a population-based study in Los Angeles, CA. Thirty-two AS-OCT images were acquired from one eye each of 83 consecutive subjects. Sixteen parameters were analyzed in each image, including angle opening distance (AOD), angle recess area (ARA), trabecular iris space area (TISA), trabecular iris angle (TIA), scleral spur angle (SSAngle), lens vault (LV), pupillary diameter (PD), anterior chamber depth (ACD), anterior chamber width (ACW), iris area (IA), and anterior chamber area (ACA)...
November 1, 2016: Investigative Ophthalmology & Visual Science
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