100,514 results match your criteria estimating


Distance to water source in early childhood affects growth: a cohort study.

Public Health 2021 Apr 7;193:139-145. Epub 2021 Apr 7.

School of Economics and Resource Management, Beijing Normal University, Beijing, China. Electronic address:

Objectives: Approximately 165 million children aged <5 years are at risk of low height-for-age. This study explored whether water quality and distance to water source affected short- and long-term growth, and the critical time windows of such effects.

Study Design: This study used data from the China Health and Nutrition Survey (CHNS), which was a cohort study performed in 15 Chinese provinces. Read More

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Dose-response of Fricke- and PAGAT-dosimetry gels in kilovoltage and megavoltage photon beams: Impact of LET on sensitivity.

Phys Med 2021 Apr 7;84:41-49. Epub 2021 Apr 7.

Instituto de Física Enrique Gaviola (IFEG), CONICET, Córdoba, Argentina; Laboratorio de Investigación e Instrumentación en Física Aplicada a la Medicina e Imágenes por Rayos X, FAMAF-UNC, Córdoba, Argentina; Centro de Física e Ingeniería en Medicina - CFIM & Departamento de Ciencias Físicas, Universidad de La Frontera, Temuco, Chile.

Purpose: Dosimetry of ionizing radiation quantifies the energy deposited by an incident beam to the medium. This study presents the relative response of two types of gel dosimeters describing their differences by estimating radiation chemical yields produced in water radiolysis.

Methods: Two types of gel dosimeter were used, namely an acid ferrous ion solution infused with xylenol orange known as Fricke gel and a polymer gel based on acrylamide and N,N'-methylenebis(acrylamide) known as PAGAT. Read More

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Development of statistical models for estimating daily nitrate load in Iowa.

Sci Total Environ 2021 Mar 22;782:146643. Epub 2021 Mar 22.

IIHR-Hydroscience & Engineering, The University of Iowa, Iowa City, Iowa, USA; Iowa Geological Survey, The University of Iowa, Iowa City, Iowa, USA.

There is an ongoing need to increase our understanding of the sources and timing of stream nitrate loads across agricultural watersheds in Iowa as water quality improvement strategies are implemented. The goal of this study was to model the relationship between nitrate load and the two components of streamflow (i.e. Read More

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Gains in insurance coverage following the affordable care act and change in preventive services use among non-elderly US immigrants.

Prev Med 2021 Apr 7:106546. Epub 2021 Apr 7.

Wayne State University, Institute of Gerontology, USA; Wayne State University, Department of Economics, USA; University of New Mexico, Department of Sociology, USA; University of California San Diego, Department of Neurosciences and Shiley-Marcos Alzheimer's Disease Research Center, USA; Wayne State University, Department of Healthcare Sciences, USA. Electronic address:

Immigrants have lower and disproportionate use of preventive care. We use longitudinal panel data to examine how the 2014 full implementation of the ACA mandates affected change in preventive services (PS) use among immigrants that gained insurance. We used data on Foreign-Born (FB) and US-Born (USB) adults, ages 26-64 years, from the 2013/16 Medical Expenditures Panel Survey longitudinal files to examine within-person change in yearly utilization of age/sex specific United States Preventive Services Task Force (USPSTF) recommended services. Read More

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Fast hybrid Bayesian integrative learning of multiple gene regulatory networks for type 1 diabetes.

Biostatistics 2021 Apr;22(2):233-249

Department of Statistics, Purdue University, West Lafayette, IN, USA.

Motivated by the study of the molecular mechanism underlying type 1 diabetes with gene expression data collected from both patients and healthy controls at multiple time points, we propose a hybrid Bayesian method for jointly estimating multiple dependent Gaussian graphical models with data observed under distinct conditions, which avoids inversion of high-dimensional covariance matrices and thus can be executed very fast. We prove the consistency of the proposed method under mild conditions. The numerical results indicate the superiority of the proposed method over existing ones in both estimation accuracy and computational efficiency. Read More

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Heart rate detection by Fitbit ChargeHR : A validation study versus portable polysomnography.

J Sleep Res 2021 Apr 10:e13346. Epub 2021 Apr 10.

Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy.

Consumer "Smartbands" can collect physiological parameters, such as heart rate (HR), continuously across the sleep-wake cycle. Nevertheless, the quality of HR data detected by such devices and their place in the research and clinical field is debatable, as they are rarely rigorously validated. The objective of the present study was to investigate the reliability of pulse photoplethysmographic detection by the Fitbit ChargeHR (FBCHR, Fitbit Inc. Read More

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LA reservoir strain: a sensitive parameter for estimating LV filling pressure in patients with preserved EF.

Int J Cardiovasc Imaging 2021 Apr 10. Epub 2021 Apr 10.

Department of Cardiovascular Medicine, Ankara University School of Medicine, Cebeci Kalp Merkezi, Mamak, Ankara, Turkey.

An elevated left ventricular (LV) filling pressure is the main finding in patients with heart failure with preserved ejection fraction (HFpEF), and LV filling pressure is estimated with an algorithm in the recent American Society of Echocardiography (ASE)/European Association of Cardiovascular Imaging (EACVI) guideline. In this study, we sought to determine the efficacy of LA global longitudinal strain to estimate elevated LV filling pressure. Seventy-one consecutive patients (mean age of 63. Read More

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Opportunistic screening for hypertension: what does it say about the true epidemiology?

J Hum Hypertens 2021 Apr 9. Epub 2021 Apr 9.

Hypertension Center STRIDE-7, National and Kapodistrian University of Athens, School of Medicine, Third Department of Medicine, Sotiria Hospital, Athens, Greece.

This study aimed to assess the reliability of opportunistic screening programs in estimating the prevalence, treatment, and control rate of hypertension in the general population. Two recent epidemiological surveys obtained data on hypertension in the adult general population in Greece. The EMENO (2013-2016) applied a multi-stage stratified random sampling method to collect nationwide data. Read More

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Large-scale nonlinear Granger causality for inferring directed dependence from short multivariate time-series data.

Sci Rep 2021 Apr 9;11(1):7817. Epub 2021 Apr 9.

Department of Biomedical Engineering, University of Rochester, Rochester, New York, USA.

A key challenge to gaining insight into complex systems is inferring nonlinear causal directional relations from observational time-series data. Specifically, estimating causal relationships between interacting components in large systems with only short recordings over few temporal observations remains an important, yet unresolved problem. Here, we introduce large-scale nonlinear Granger causality (lsNGC) which facilitates conditional Granger causality between two multivariate time series conditioned on a large number of confounding time series with a small number of observations. Read More

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Addressing partial identification in climate modeling and policy analysis.

Proc Natl Acad Sci U S A 2021 Apr;118(15)

Department of Economics, University of California, Santa Barbara, CA 93106.

Numerical simulations of the global climate system provide inputs to integrated assessment modeling for estimating the impacts of greenhouse gas mitigation and other policies to address global climate change. While essential tools for this purpose, computational climate models are subject to considerable uncertainty, including intermodel "structural" uncertainty. Structural uncertainty analysis has emphasized simple or weighted averaging of the outputs of multimodel ensembles, sometimes with subjective Bayesian assignment of probabilities across models. Read More

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Relationship between workers' return to work, job retention and income in industrial accidents in Korea: a longitudinal study.

BMJ Open 2021 Apr 9;11(4):e039948. Epub 2021 Apr 9.

Graduate School of Public Health, Yonsei University, Seoul, South Korea

Objective: This study aims to compare workers' income before and after an occupational injury, with regard to return to work and job retention, over a period of 5 years.

Design: This study was designed as a longitudinal study.

Setting: The Panel Study of Workers' Compensation Insurance (PSWCI) survey targeted workers involved in industrial accidents for which medical care was terminated in the year 2012. Read More

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Ethnic Specific body fat percent prediction equation as surrogate marker of obesity in Ethiopian adults.

J Health Popul Nutr 2021 Apr 9;40(1):17. Epub 2021 Apr 9.

Department of Nutrition and Dietetics, Faculty of Public Health, Institute of Health, Jimma University, Jimma, Ethiopia.

Background: Application of advanced body composition measurement methods is not practical in developing countries context due to cost and unavailability of facilities. This study generated ethnic specific body fat percent prediction equation for Ethiopian adults using appropriate data.

Methods: A cross-sectional study was carried ifrom February to April 2015 among 704 randomly selected adult employees of Jimma University. Read More

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Cigarette smoking and all-cause mortality in rural Chinese male adults: 15-year follow-up of the Anqing cohort study.

BMC Public Health 2021 Apr 9;21(1):696. Epub 2021 Apr 9.

Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.

Background: According to the Global Burden of Disease Study 2017, smoking is one of the leading four risk factors contributing to deaths in China. We aimed to evaluate the associations of smoking with all-cause mortality in a Chinese rural population.

Methods: Male participants over age 45 (n = 5367) from a large familial aggregation study in rural China, were included in the current analyses. Read More

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Individualized blood pressure targets in the postoperative care of patients with intracerebral hemorrhage.

J Neurosurg 2021 Apr 9:1-10. Epub 2021 Apr 9.

1Neurological Intensive Care Unit, Department of Neurology, and.

Objective: Recent guidelines recommend targeting a systolic blood pressure (SBP) < 140 mm Hg in the early management of patients with spontaneous intracerebral hemorrhage (ICH). The optimal SBP targets for ICH patients after hematoma evacuation (HE) remain unclear. Here, the authors aimed to define the optimal SBP range based on multimodal neuromonitoring data. Read More

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Implementation of an in-house real-time reverse transcription-PCR assay for the rapid detection of the SARS-CoV-2 Marseille-4 variant.

J Clin Virol 2021 Mar 31;139:104814. Epub 2021 Mar 31.

IHU Méditerranée Infection, 19-21 Boulevard Jean Moulin, 13005, Marseille, France; Aix-Marseille Univ., Institut de Recherche pour le Développement (IRD), Assistance Publique - Hôpitaux de Marseille (AP-HM), Microbes Evolution Phylogeny and Infections (MEPHI), 27 Boulevard Jean Moulin, 13005, Marseille, France. Electronic address:

Introduction: The SARS-CoV-2 pandemic has been associated with the occurrence since summer 2020 of several viral variants that overlapped or succeeded each other in time. Those of current concern harbor mutations within the spike receptor binding domain (RBD) that may be associated with viral escape to immune responses. In our geographical area a viral variant we named Marseille-4 harbors a S477 N substitution in this RBD. Read More

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Prognostic Nomograms to Predict Overall Survival and Cancer-Specific Survival of Patients With Pancreatic Neuroendocrine Tumors: A Population-Based Study.

Pancreas 2021 Mar;50(3):414-422

Objective: The objective of this research was to construct and validate prognostic nomograms predicting overall survival (OS) and cancer-specific survival (CSS) in patients with pancreatic neuroendocrine tumors (pNETs).

Methods: We extracted 3787 patients with pNETs from the Surveillance, Epidemiology and End Results database. Nomograms for estimating 3- and 5-year OS and CSS were first established. Read More

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Localized Maxillary Sinus Papilloma: Management of Incidental Lesion.

Tokai J Exp Clin Med 2021 Apr 20;46(1):17-21. Epub 2021 Apr 20.

Department of Otolaryngology, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.

Most maxillary sinus papillomas are confirmed when they have extended beyond the nasal cavity and are rarely found while localized in the maxillary sinus. We experienced two cases of localized papilloma in the maxillary sinus. Case 1 was a 69-year-old man with a localized left maxillary sinus lesion detected during a routine imaging examination. Read More

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Transcript Isoform-Specific Estimation of Poly(A) Tail Length by Nanopore Sequencing of Native RNA.

Methods Mol Biol 2021 ;2284:543-567

Computational Biology Unit, Department of Informatics, University of Bergen, Bergen, Norway.

The poly(A) tail is a homopolymeric stretch of adenosine at the 3'-end of mature RNA transcripts and its length plays an important role in nuclear export, stability, and translational regulation of mRNA. Existing techniques for genome-wide estimation of poly(A) tail length are based on short-read sequencing. These methods are limited because they sequence a synthetic DNA copy of mRNA instead of the native transcripts. Read More

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January 2021

Risk factors for stress and urge urinary incontinence during pregnancy and the first year postpartum: a prospective longitudinal study.

Int Urogynecol J 2021 Apr 9. Epub 2021 Apr 9.

Department of Pediatrics, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan.

Introduction And Hypothesis: We examined obstetric and maternal-newborn factors and UI history for stress urinary incontinence (UI) and urge UI during pregnancy and the first year postpartum.

Methods: This prospective cohort study included 1447 pregnant women who underwent prenatal examinations and completed an Incontinence Questionnaire-Urinary Incontinence Short Form before pregnancy, during early, mid- and late pregnancy, and at five visits during the first year postpartum. Data were analyzed using univariate/multivariate generalized estimating equation (GEE) logistic regression analyses. Read More

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[The National Survey on Addiction Problems in Hungary 2019 (NSAPH): Methodology and sample description].

Neuropsychopharmacol Hung 2021 Mar;23(1):184-207

Eötvös Loránd Tudományegyetem, Pszichológiai Intézet, Budapest, Hungary.

Objectives: This paper presents the methods and main methodological fi ndings of the third wave of data collection of the National Survey on Addiction Problems in Hungary (NSAPH). In addition to mapping the addiction problems of the Hungarian population and monitoring the general population addiction trends in Hungary, the research formulates objectives for the development of the methodology used in addiction research. The study presents the measurement tools used in the research, the sampling and data collection strategy, as well as the methodological results related to sample access and the reliability and validity of the applied measurement tools used. Read More

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Incorporating Heisenberg's Uncertainty Principle into Quantum Multiparameter Estimation.

Phys Rev Lett 2021 Mar;126(12):120503

Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou 310027, China.

The quantum multiparameter estimation is very different from the classical multiparameter estimation due to Heisenberg's uncertainty principle in quantum mechanics. When the optimal measurements for different parameters are incompatible, they cannot be jointly performed. We find a correspondence relationship between the inaccuracy of a measurement for estimating the unknown parameter with the measurement error in the context of measurement uncertainty relations. Read More

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Caesarean delivery and early childhood caries: Estimation with marginal structural models in Brazilian pre-schoolers.

Community Dent Oral Epidemiol 2021 Apr 8. Epub 2021 Apr 8.

Postgraduate Program in Dentistry, Federal University of Maranhão, São Luís, Brazil.

Objective: This study analysed the association between caesarean section and early childhood caries (ECC), estimating the effects using regression and causal inference models.

Methods: This was a historical cohort study of 697 mother-child dyads, conducted in São Luís, Brazil. The caesarean section was the exposure, and the severity of ECC (dmft) was the outcome. Read More

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Adverse pregnancy outcomes in women with Behçet's disease: population-based registry linkage study in Taiwan.

Clin Rheumatol 2021 Apr 9. Epub 2021 Apr 9.

Division of Rheumatology, Allergy and Immunology, Chang Gung Memorial Hospital, 5, Fu-Hsing Street, Taoyuan, 333, Taiwan.

Objectives: To estimate the risks of adverse pregnancy outcomes in women with Behçet's disease (BD) METHODS: Data collected by the Taiwan National Health Insurance Administration between 2001 and 2012 was used for our study. A total of 2,350,339 pregnancies from the Taiwan National Health Insurance database and birth registry were identified. Maternal history of BD in women was ascertained. Read More

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Fertility Drain or Fertility Gain? Emigration and Fertility During the Great Recession in Italy.

Demography 2021 Apr;58(2):631-654

Department of Social and Political Sciences, Bocconi University, Dondena, Italy.

How does emigration affect fertility in the country of origin? We address this question by estimating counterfactual fertility during the Great Recession in order to understand what the effect of the recession on fertility would be in the absence of emigration. Between 2009 and 2014, Southern European countries suffered from harsh economic instability, which triggered a sharp drop in fertility and a spike in emigration. We focus on Italy, exploiting the richness of the Italian Administrative Registry of Italians Residing Abroad (AIRE), which records information about all Italian citizens moving their residence abroad, as well as Italian birth records. Read More

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Immunosuppressive Microenvironment Revealed by Immune Cell Landscape in Pre-metastatic Liver of Colorectal Cancer.

Front Oncol 2021 23;11:620688. Epub 2021 Mar 23.

Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, China.

Colorectal cancer, the fourth leading cause of cancer mortality, is prone to metastasis, especially to the liver. The pre-metastatic microenvironment comprising various resident stromal cells and immune cells is essential for metastasis. However, how the dynamic evolution of immune components facilitates pre-metastatic niche formation remains unclear. Read More

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Identifying Opportunities to Promote Physical Activity in a Diverse Low-Income Population: A Mixed-Method Study at a Boys & Girls Club Site.

Child Youth Care Forum 2020 Apr 12;49(2):171-200. Epub 2019 Sep 12.

Mayo Clinic.

Background: Prevalence and consequences of obesity and sedentary lifestyle are well-documented public health concerns for youth in the United State of America (U.S.A) that disproportionally affect children from low income and minority families. Read More

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Temporal context actively shapes EEG signatures of time perception.

J Neurosci 2021 Apr 7. Epub 2021 Apr 7.

Department of Psychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS, Groningen, the Netherlands.

Our subjective perception of time is optimized to temporal regularities in the environment. This is illustrated by the central tendency effect: when estimating a range of intervals, short intervals are overestimated whereas long intervals are underestimated to reduce the overall estimation error. Most models of interval timing ascribe this effect to the weighting of the current interval with previous memory traces the interval has been perceived. Read More

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Ecological risk assessment of hexavalent chromium and silicon dioxide in well water in Maros Regency, Indonesia.

Gac Sanit 2021 ;35 Suppl 1:S4-S8

Doctoral Program of Public Health, Faculty of Public Health, Hasanuddin University, Makassar, Indonesia.

Objective: This paper assesses the potential ecological risk of hexavalent chromium (Cr(VI)) and silicon dioxide/silica (SiO) in well water. Both of pollutants have been classified as carcinogenic compound. The ecological risk assessment of drinking water is an effective tool to evaluate drinking water quality to reduce further risk. Read More

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January 2021

Harmonizing healthcare and other resource measures for evaluating economic costs in substance use disorder research.

Subst Abuse Treat Prev Policy 2021 Apr 8;16(1):32. Epub 2021 Apr 8.

Department of Public Health Sciences, University of Miami Miller School of Medicine, 1120 NW 14th St, Miami, FL, 33136, USA.

Background: Standardization and harmonization of healthcare resource utilization data can improve evaluations of the economic impact of treating people with substance use disorder (SUD), including reductions in use of expensive hospital and emergency department (ED) services, and can ensure consistency with current cost-effectiveness and cost-benefit analysis guidelines.

Methods: We examined self-reported healthcare and other resource utilization data collected at baseline from three National Institute on Drug Abuse (NIDA)-funded Seek, Test, Treat, and Retain intervention studies of individuals living with/at risk for HIV with SUD. Costs were calculated by multiplying mean healthcare resource utilization measures by monetary conversion factors reflecting cost per unit of care. Read More

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