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Threshold Regression

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https://www.readbyqxmd.com/read/28717645/whole-genome-amplification-of-day-3-or-day-5-human-embryos-biopsies-provides-a-suitable-dna-template-for-pcr-based-techniques-for-genotyping-a-complement-of-preimplantation-genetic-testing
#1
Elizabeth Schaeffer, Bruno López-Bayghen, Adina Neumann, Leonardo M Porchia, Rafael Camacho, Efraín Garrido, Rocío Gómez, Felipe Camargo, Esther López-Bayghen
Our objective was to determine if whole genome amplification (WGA) provides suitable DNA for qPCR-based genotyping for human embryos. Single blastomeres (Day 3) or trophoblastic cells (Day 5) were isolated from 342 embryos for WGA. Comparative Genomic Hybridization determined embryo sex as well as Trisomy 18 or Trisomy 21. To determine the embryo's sex, qPCR melting curve analysis for SRY and DYS14 was used. Logistic regression indicated a 4.4%, 57.1%, or 98.8% probability of a male embryo when neither gene, SRY only, or both genes were detected, respectively (accuracy = 94...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28716437/tumor-programmed-cell-death-ligand-1-expression-correlates-with-nodal-metastasis-in-patients-with-cutaneous-squamous-cell-carcinoma-of-the-head-and-neck
#2
Juana María García-Pedrero, Pablo Martínez-Camblor, Susana Diaz-Coto, Pablo Munguia-Calzada, Aitana Vallina-Alvarez, Francisco Vazquez-Lopez, Juan Pablo Rodrigo, Jorge Santos-Juanes
BACKGROUND: Binding of tumor-expressed programmed cell death ligand 1 (PD-L1) to the programmed cell death 1 (PD-1) surface receptor blocks T-cell activation thereby leading to immune evasion. Tumor PD-L1 expression has been associated with poor outcome in a wide variety of cancers; however, data in cutaneous squamous cell carcinoma (cSCC) are scarce and conflicting. OBJECTIVE: To investigate the relationship of tumor PD-L1 expression with the clinicopathologic features and prognosis of cSCC...
July 14, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28715578/adverse-pathologic-findings-for-men-electing-immediate-radical-prostatectomy-defining-a-favorable-intermediate-risk-group
#3
Hiten D Patel, Jeffrey J Tosoian, H Ballentine Carter, Jonathan I Epstein
Importance: Active surveillance is recommended for patients with very low-risk (VLR) and low-risk (LR) prostate cancer. Despite controversy, recent clinical guidelines state surveillance may be considered for men with low-volume intermediate-risk (LVIR) disease. Objective: To compare rates of adverse pathologic findings among VLR, LR, and LVIR men electing immediate radical prostatectomy and evaluate criteria to define if a favorable intermediate-risk group minimizing risk exists...
July 13, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28715450/african-genetic-ancestry-interacts-with-body-mass-index-to-modify-risk-for-uterine-fibroids
#4
Ayush Giri, Todd L Edwards, Katherine E Hartmann, Eric S Torstenson, Melissa Wellons, Pamela J Schreiner, Digna R Velez Edwards
Race, specifically African ancestry, and obesity are important risk factors for uterine fibroids, and likely interact to provide the right conditions for fibroid growth. However, existing studies largely focus on the main-effects rather than their interaction. Here, we firstly provide evidence for interaction between categories of body mass index (BMI) and reported-race in relation to uterine fibroids. We then investigate whether the association between inferred local European ancestry and fibroid risk is modified by BMI in African American (AA) women in the Vanderbilt University Medical Center bio-repository (BioVU) (539 cases and 794 controls) and the Coronary Artery Risk Development in Young Adults study (CARDIA, 264 cases and 173 controls)...
July 17, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28715160/meeting-the-who-90-target-antiretroviral-treatment-efficacy-in-poland-is-associated-with-baseline-clinical-patient-characteristics
#5
Milosz Parczewski, Ewa Siwak, Magdalena Leszczyszyn-Pynka, Iwona Cielniak, Ewa Burkacka, Piotr Pulik, Adam Witor, Karolina Muller, Ewelina Zasik, Anna Grzeszczuk, Maria Jankowska, Małgorzata Lemańska, Anita Olczak, Edyta Grąbczewska, Aleksandra Szymczak, Jacek Gąsiorowski, Bartosz Szetela, Monika Bociąga-Jasik, Paweł Skwara, Magdalena Witak-Jędra, Elżbieta Jabłonowska, Kamila Wójcik-Cichy, Juliusz Kamerys, Małgorzata Janczarek, Dagny Krankowska, Tomasz Mikuła, Katarzyna Kozieł, Dariusz Bielec, Justyna Stempkowska, Aleksandra Kocbach, Wiesława Błudzin, Andrzej Horban
INTRODUCTION: Modern combined antiretroviral therapies (cART) allow to effectively suppress HIV-1 viral load, with the 90% virologic success rate, meeting the WHO target in most clinical settings. The aim of this study was to analyse antiretroviral treatment efficacy in Poland and to identify variables associated with virologic suppression. M: ethods Cross-sectional data on 5152 (56.92% of the countrywide treated at the time-point of analysis) patients on cART for more than six months with at least one HIV-RNA measurement in 2016 were collected from 14 Polish centres...
July 17, 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/28714825/quadriceps-and-patient-reported-function-in-acl-reconstructed-patients-a-principal-component-analysis
#6
Grant E Norte, Jay N Hertel, Susan A Saliba, David R Diduch, Joseph M Hart
CONTEXT: Assessment of physical function for individuals after ACL reconstruction (ACL-R) is complex and warrants the use of diverse evaluation strategies. To maximize the efficiency of assessment, there is a need to identify tests that provide the most meaningful information about this population. OBJECTIVE: To investigate underlying constructs of quadriceps muscle function that uniquely describe aspects of performance in patients after ACL-R, and establish clinical thresholds for measures able to classify patients with and without ACL-R...
July 17, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28713833/association-between-hemoglobin-levels-and-diabetic-peripheral-neuropathy-in-patients-with-type-2-diabetes-a-cross-sectional-study-using-electronic-health-records
#7
Jun Yang, Pi-Jun Yan, Qin Wan, Hua Li
OBJECTIVE: To investigate the relationship between hemoglobin levels and diabetic peripheral neuropathy (DPN) in type 2 diabetes mellitus (T2DM). METHODS: 1511 patients with T2DM were included in the study. DPN was diagnosed based on symptoms, signs, and laboratory tests. Hemoglobin was defined as both a continuous variable and a quartile category variable. We compared patient characteristics between the no diabetic peripheral neuropathy (NDPN) and DPN groups. Logistic regression was conducted to investigate the association of DPN with hemoglobin in all T2DM patients...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28711000/ecosystem-services-response-to-urbanization-in-metropolitan-areas-thresholds-identification
#8
Jian Peng, Lu Tian, Yanxu Liu, Mingyue Zhao, Yi'na Hu, Jiansheng Wu
Ecosystem service is the key comprehensive indicator for measuring the ecological effects of urbanization. Although various studies have found a causal relationship between urbanization and ecosystem services degradation, the linear or non-linear characteristics are still unclear, especially identifying the impact thresholds in this relationship. This study quantified four ecosystem services (i.e. soil conservation, carbon sequestration and oxygen production, water yield, and food production) and total ecosystem services (TES), and then identified multiple advantageous area of ecosystem services in the peri-urban area of Beijing City...
July 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28710824/a-novel-study-on-association-between-untreated-hearing-loss-and-cognitive-functions-of-older-adults-baseline-non-verbal-cognitive-assessment-results
#9
Dona M P Jayakody, Peter L Friedland, Robert H Eielboom, Ralph N Martins, Hamid R Sohrabi
BACKGROUND: Age-related hearing loss (ARHL) is highly prevalent in older adults and more than two-thirds above age 70 years suffer from ARHL. Recent studies have established a link between ARHL and cognitive impairment, however, most of the studies have used verbally loaded cognitive measures to investigate the association between ARHL and cognition. It is possible that due to hearing impairment, the elderly may experience difficulty in following verbal instructions or completing tasks that heavily rely on hearing during cognitive assessments...
July 15, 2017: Clinical Otolaryngology
https://www.readbyqxmd.com/read/28709763/the-role-of-occupational-voice-demand-and-patient-rated-impairment-in-predicting-voice-therapy-adherence
#10
Barbara Ebersole, Resha S Soni, Kathleen Moran, Miriam Lango, Karthik Devarajan, Nausheen Jamal
OBJECTIVE: Examine the relationship among the severity of patient-perceived voice impairment, perceptual dysphonia severity, occupational voice demand, and voice therapy adherence. Identify clinical predictors of increased risk for therapy nonadherence. METHODS: A retrospective cohort study of patients presenting with a chief complaint of persistent dysphonia at an interdisciplinary voice center was done. The Voice Handicap Index-10 (VHI-10) and the Voice-Related Quality of Life (V-RQOL) survey scores, clinician rating of dysphonia severity using the Grade score from the Grade, Roughness Breathiness, Asthenia, and Strain scale, occupational voice demand, and patient demographics were tested for associations with therapy adherence, defined as completion of the treatment plan...
July 11, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28709670/arterial-stiffness-in-normotensive-and-hypertensive-subjects-frequency-in-community-pharmacies
#11
Enrique Rodilla Sala, Manuel Adell Alegre, Vicente Giner Galvañ, Zeneida Perseguer Torregrosa, Jose Maria Pascual Izuel, María Teresa Climent Catalá
BACKGROUND AND OBJECTIVE: Arterial stiffness (AS) is a well-recognized target organ lesion. This study aims to determine: 1) the frequency of AS in community pharmacies; 2) if stiffened subjects identified by brachial oscillometry have more CV risk factors than normal subjects, and 3) the dependence of stiffness on using either age-adjusted values or a fixed threshold. PATIENTS AND METHOD: Observational, cross-sectional study in 32 community pharmacies of the Valencia Community, between November/2015 and April/2016...
July 11, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/28708728/differentiating-primary-central-nervous-system-lymphomas-from-glioblastomas-and-inflammatory-demyelinating-pseudotumor-using-relative-minimum-apparent-diffusion-coefficients
#12
Jian-Bo Wen, Wei-Yuan Huang, Wei-Xing-Zi Xu, Gang Wu, Dao-Ying Geng, Bo Yin
OBJECTIVE: Our purpose was to evaluate the diagnostic performance of diffusion-weighted imaging, the relative minimum apparent diffusion coefficient (rADCmin) in differentiating primary central nervous system lymphomas (PCNSLs) from glioblastomas (GBMs) and inflammatory demyelinating pseudotumors (IDPs). MATERIALS AND METHODS: Magnetic resonance images were reviewed retrospectively in 82 patients including 39 PCNSLs, 35 GBMs, and 8 IDPs. Regions of interest were drawn around the tumor on contrast-enhanced axial images; these images were transferred onto coregistered ADC maps to obtain the ADCmin, and the normalized ADCmin ratios (rADCmin) were calculated using the formula rADCmin = ADCmin of the lesion / ADCmin of the normal white matter...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28707983/signs-of-gas-trapping-in-normal-lung-density-regions-in-smokers
#13
Sandeep Bodduluri, Joseph M Reinhardt, Eric A Hoffman, John D Newell, Hrudaya Nath, Mark T Dransfield, Surya P Bhatt
RATIONALE: A substantial proportion of subjects without overt airflow obstruction have significant respiratory morbidity and structural abnormalities on computed tomography (CT). Whether regions of the lung that appear normal using traditional CT criteria have mild disease is not known. OBJECTIVE: To identity subthreshold structural disease in normal appearing lung regions in smokers. METHODS: We analyzed 8034 subjects with complete inspiratory and expiratory CT data participating in COPDGene including 103 lifetime non-smokers...
July 14, 2017: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/28707859/independent-predictors-for-functional-outcome-after-drainage-of-chronic-subdural-hematoma-identified-using-a-logistic-regression-model
#14
Sotirios Katsigiannis, Christina Hamisch, Boris Krischek, Marco Timmer, Anastasios Mpotsaris, Roland Goldbrunner, Pantelis Stavrinou
BACKGROUND: Chronic subdural hematoma (CSDH) is a common indication for undergoing neurosurgery, but the outcome may remain limited despite timely surgical treatment. The factors potentially associated with the functional outcome have not been sufficiently investigated. We set out to identify independent predictors associated with the functional outcome after surgical treatment of CSDH, avoiding arbitrary classifications and thresholds or subjective imaging assessment. METHODS: We retrospectively reviewed 197 consecutive surgical cases of CSDH...
July 12, 2017: Journal of Neurosurgical Sciences
https://www.readbyqxmd.com/read/28706093/does-neutrophil-to-lymphocyte-ratio-predict-1-year-mortality-in-patients-with-primary-biliary-cholangitis-results-from-a-retrospective-study-with-validation-cohort
#15
Lin Lin, Meiyu Piao, Xihui Jiang, Houning Lv, Ningning Zhao, Fang Yang, Chao Sun
OBJECTIVES: Neutrophil-to-lymphocyte ratio (NLR) has been used to predict prognosis in various liver diseases, but its role in primary biliary cholangitis (PBC) is not clarified. We aimed to investigate the prognostic usefulness of NLR for 1-year mortality in PBC. METHODS: The study recruited a retrospective cohort with 88 patients with PBC and a prospective validation cohort with 63 participants who were followed-up for 1 year. NLR and other laboratory measurements were analysed by multivariate regression model for identifying independent factors for early mortality...
July 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/28704461/assessing-the-performance-of-remotely-sensed-flooding-indicators-and-their-potential-contribution-to-early-warning-for-leptospirosis-in-cambodia
#16
Julia Ledien, Sopheak Sorn, Sopheak Hem, Rekol Huy, Philippe Buchy, Arnaud Tarantola, Julien Cappelle
Remote sensing can contribute to early warning for diseases with environmental drivers, such as flooding for leptospirosis. In this study we assessed whether and which remotely-sensed flooding indicator could be used in Cambodia to study any disease for which flooding has already been identified as an important driver, using leptospirosis as a case study. The performance of six potential flooding indicators was assessed by ground truthing. The Modified Normalized Difference Water Index (MNDWI) was used to estimate the Risk Ratio (RR) of being infected by leptospirosis when exposed to floods it detected, in particular during the rainy season...
2017: PloS One
https://www.readbyqxmd.com/read/28704383/predicting-in-hospital-death-during-acute-presentation-with-pulmonary-embolism-to-facilitate-early-discharge-and-outpatient-management
#17
Jerrett K Lau, Vincent Chow, Alex Brown, Leonard Kritharides, Austin C C Ng
BACKGROUND: Pulmonary embolism continues to be a significant cause of death. The aim was to derive and validate a risk prediction model for in-hospital death after acute pulmonary embolism to identify low risk patients suitable for outpatient management. METHODS: A confirmed acute pulmonary embolism database of 1,426 consecutive patients admitted to a tertiary-center (2000-2012) was analyzed, with odd and even years as derivation and validation cohorts respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28704098/accuracy-of-plasma-free-metanephrines-in-the-diagnosis-of-pheochromocytoma-and-paraganglioma-a-systematic-review-and-meta-analysis
#18
Yan Chen, Huangmeng Xiao, Xieda Zhou, Xiaoyu Huang, Yanbing Li, Haipeng Xiao, Xiaopei Cao
OBJECTIVE: Various studies have validated plasma free metanephrines as biomarkers for pheochromocytoma and paraganglioma (PPGL). This meta-analysis aimed to estimate the overall diagnostic accuracy of this biochemical test for PPGL. METHODS: We searched the PubMed, the Cochrane Library, Web of Science, Embase, Scopus, OvidSP, and ProQuest Dissertations & Theses databases from January 1, 1995 to December 2, 2016 and selected studies written in English that assessed plasma free metanephrines in the diagnosis of PPGL...
July 13, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28702468/antimicrobial-stewardship-lessons-from-mupirocin-use-and-resistance-in-methicillin-resitant-staphylococcus-aureus
#19
Lance R Peterson, Noelle I Samia, Andrew M Skinner, Amit Chopra, Becky Smith
BACKGROUND: The quantitative relationship between antimicrobial agent consumption and rise or fall of antibiotic resistance has rarely been studied. We began all admission surveillance testing for methicillin-resistant Staphylococcus aureus (MRSA) in August 2005 with subsequent contact isolation and decolonization using nasally applied mupirocin ointment for those colonized. In October 2012, we discontinued decolonization of medical (nonsurgical service) patients. METHODS: We conducted a retrospective study from 2007 through 2014 of 445680 patients; 35235 were assessed because of mupirocin therapy and positive test results for MRSA...
2017: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/28701671/is-serum-uric-acid-independently-associated-with-left-ventricular-mass-index-ejection-fraction-and-b-type-natriuretic-peptide-among-female-and-male-cardiac-patients
#20
Yohei Yamauchi, Shu-Ichi Fujita, Kensaku Shibata, Hideaki Morita, Takahide Ito, Koichi Sohmiya, Masaaki Hoshiga, Nobukazu Ishizaka
Mean serum uric acid (SUA) levels are higher in men than women. In addition, recent studies have suggested that the SUA threshold at which the cardiovascular risk might increase may vary between women and men. In the current retrospective study, by analyzing the data from 219 female and 519 male patients who were free from uric acid-lowering medication, we investigated whether SUA is associated with left ventricular mass index (LVMI), left ventricular ejection fraction (LVEF), and plasma levels of B-type natriuretic peptide (BNP) independent of confounding factors, such as serum calcium, inorganic phosphate, and fibroblast growth factor 23 (FGF23), in a gender-specific manner...
July 13, 2017: International Heart Journal
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