keyword
MENU ▼
Read by QxMD icon Read
search

Epidemiologic Methods

keyword
https://www.readbyqxmd.com/read/27910939/real-time-pcr-based-serotyping-of-streptococcus-agalactiae
#1
Kathleen M Breeding, Bhavana Ragipani, Kun-Uk David Lee, Martin Malik, Tara M Randis, Adam J Ratner
Group B Streptococcus (GBS) is an encapsulated, gram-positive pathogen that is an important cause of neonatal invasive infections, including sepsis and meningitis. There are ten known GBS serotypes based on distinct capsule compositions (Ia, Ib, II-IX), and current candidate capsular polysaccharide conjugate vaccines target only a subset of these. Serotyping of GBS isolates is important for understanding local epidemiology and for monitoring for serotype replacement or capsular switching. However, serotyping generally requires either latex agglutination, multiplex PCR with analysis of band sizes, or analysis of whole genome sequences-all techniques that are either expensive or not widely available...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910801/epidemiologic-and-therapeutic-aspects-of-refractory-coeliac-disease-a-systematic-review
#2
Sara Anna Rowinski, Erik Christensen
INTRODUCTION: Refractory coeliac disease (RCD) is a rare and severe malabsorptive disease. The condition has two subtypes: RCDI and RCDII. Different treatments have been tested: and because RCD has a poor prognosis due to progress to enteropathy-associated T-cell lymphoma, the aim was to review the epidemiologic aspects and the therapeutic options for RCD. METHODS: A systematic literature search was performed in 18 databases, and 122 records were identified. Incidence, prevalence, treatment methods and their efficacy were evaluated...
December 2016: Danish Medical Journal
https://www.readbyqxmd.com/read/27910095/a-comparison-of-methods-for-estimating-the-incidence-of-human-immunodeficiency-virus-infection-in-repeat-blood-donors
#3
Donald J Brambilla, Michael P Busch, Roger Y Dodd, Simone A Glynn, Steven H Kleinman
BACKGROUND: The incidence of human immunodeficiency virus (HIV) in repeat blood donors has been estimated using seven methods. Although incidence is always calculated as cases per person-time, approaches to selecting cases and calculating person-time vary. Incidence estimates have not been compared among methods. STUDY DESIGN AND METHODS: The seven methods were compared in a simulation study. Because three methods used information from donations made before an estimation interval, 8 years of donation and infection history were simulated, and Years 7 and 8 were treated as the estimation interval for all methods...
December 1, 2016: Transfusion
https://www.readbyqxmd.com/read/27908973/environmental-public-health-tracking-a-cost-effective-system-for-characterizing-the-sources-distribution-and-public-health-impacts-of-environmental-hazards
#4
P J Saunders, J D Middleton, G Rudge
BACKGROUND: The contemporary environment is a complex of interactions between physical, biological, socio-economic systems with major impacts on public health. However, gaps in our understanding of the causes, extent and distribution of these effects remain. The public health community in Sandwell West Midlands has collaborated to successfully develop, pilot and establish the first Environmental Public Health Tracking (EPHT) programme in Europe to address this 'environmental health gap' through systematically linking data on environmental hazards, exposures and diseases...
December 1, 2016: Journal of Public Health
https://www.readbyqxmd.com/read/27908456/wastewater-based-epidemiology-to-assess-human-exposure-to-pyrethroid-pesticides
#5
Nikolaos I Rousis, Ettore Zuccato, Sara Castiglioni
Pesticides are active substances with potentially adverse effects on human health, and therefore great effort is addressed to study the relation between their widespread use and the effects on humans. To track human exposure to pesticides, novel approaches are needed to give additional information on exposure at population level. In this study, a novel application of Wastewater-Based Epidemiology (WBE) was developed to measure the intake of pyrethroid pesticides in a population. Three human urinary metabolites of pyrethroids were selected and validated as biomarkers of exposure by evaluating their sources and stability in wastewater...
November 28, 2016: Environment International
https://www.readbyqxmd.com/read/27907129/meningococcal-carriage-in-military-recruits-and-university-students-during-the-pre-menb-vaccination-era-in-greece-2014-2015
#6
Kyriaki Tryfinopoulou, Konstantinos Kesanopoulos, Athanasia Xirogianni, Nektarios Marmaras, Anastasia Papandreou, Vassiliki Papaevangelou, Maria Tsolia, Aftab Jasir, Georgina Tzanakaki
PURPOSE: The aim of the study was to estimate the meningococcal carriage rate and to identify the genotypic characteristics of the strains isolated from healthy military recruits and university students in order to provide data that might increase our understanding on the epidemiology of meningococcus and obtain information which helps to evaluate the potential effects on control programs such as vaccination. METHODS: A total of 1420 oropharyngeal single swab samples were collected from military recruits and university students on voluntary basis, aged 18-26 years...
2016: PloS One
https://www.readbyqxmd.com/read/27907105/epidemiology-of-brucellosis-and-genetic-diversity-of-brucella-abortus-in-kazakhstan
#7
Elena Shevtsova, Alexandr Shevtsov, Kasim Mukanov, Maxim Filipenko, Dinara Kamalova, Igor Sytnik, Marat Syzdykov, Andrey Kuznetsov, Assel Akhmetova, Mira Zharova, Talgat Karibaev, Pavel Tarlykov, Erlan Ramanculov
Brucellosis is a major zoonotic infection in Kazakhstan. However, there is limited data on its incidence in humans and animals, and the genetic diversity of prevalent strains is virtually unstudied. Additionally, there is no detailed overview of Kazakhstan brucellosis control and eradication programs. Here, we analyzed brucellosis epidemiological data, and assessed the effectiveness of eradication strategies employed over the past 70 years to counteract this infection. We also conducted multiple loci variable-number tandem repeat analysis (MLVA) of Brucella abortus strains found in Kazakhstan...
2016: PloS One
https://www.readbyqxmd.com/read/27906987/human-igg-antibody-response-to-aedes-nterm-34kda-salivary-peptide-an-epidemiological-tool-to-assess-vector-control-in-chikungunya-and-dengue-transmission-area
#8
Emmanuel Elanga Ndille, Souleymane Doucoure, Anne Poinsignon, François Mouchet, Sylvie Cornelie, Eric D'Ortenzio, Jean Sébastien DeHecq, Franck Remoue
BACKGROUND: Arboviral diseases are an important public health concerns. Vector control remains the sole strategy to fight against these diseases. Because of the important limits of methods currently used to assess human exposure to Aedes mosquito bites, much effort is being devoted to develop new indicators. Recent studies have reported that human antibody (Ab) responses to Aedes aegypti Nterm-34kDa salivary peptide represent a promising biomarker tool to evaluate the human-Aedes contact...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27906477/blood-pressure-measurements-in-780-apparently-healthy-cats
#9
J R Payne, D C Brodbelt, V Luis Fuentes
BACKGROUND: Mean systolic blood pressure in apparently healthy cats has been reported as approximately 125 mmHg using direct assessment, but there is greater variability in reported values using indirect assessment. Increasing age and the white-coat effect are associated with increased systolic blood pressure. HYPOTHESIS/OBJECTIVES: To report Doppler-derived blood pressure measurements from a large population of apparently healthy cats and to assess epidemiologic factors associated with recorded blood pressures...
December 1, 2016: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/27905962/identifying-potential-differences-in-cause-of-death-coding-practices-across-russian-regions
#10
Inna Danilova, Vladimir M Shkolnikov, Dmitri A Jdanov, France Meslé, Jacques Vallin
BACKGROUND: Reliable and comparable data on causes of death are crucial for public health analysis, but the usefulness of these data can be markedly diminished when the approach to coding is not standardized across territories and/or over time. Because the Russian system of producing information on causes of death is highly decentralized, there may be discrepancies in the coding practices employed across the country. In this study, we evaluate the uniformity of cause-of-death coding practices across Russian regions using an indirect method...
March 22, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905948/changes-in-life-expectancy-1950-2010-contributions-from-age-and-disease-specific-mortality-in-selected-countries
#11
Jochen Klenk, Ulrich Keil, Andrea Jaensch, Marcus C Christiansen, Gabriele Nagel
BACKGROUND: Changes of life expectancy over time serve as an interesting public health indicator for medical, social and economic developments within populations. The aim of this study was to quantify changes of life expectancy between 1950 and 2010 and relate these to main causes of death. METHODS: Pollard's actuarial method of decomposing life expectancy was applied to compare the contributions of different age- and disease-groups on life expectancy in 5-year intervals...
May 23, 2016: Population Health Metrics
https://www.readbyqxmd.com/read/27905894/seroprevalence-of-bordetella-pertussis-specific-immunoglobulin-g-antibody-levels-among-asymptomatic-individuals-aged-4-to-24%C3%A2-years-a-descriptive-cross-sectional-study-from-sri-lanka
#12
Shamithra Sigera, Jennifer Perera, Jeyanthakumar Rasarathinam, Dulani Samaranayake, Dileepa Ediriweera
BACKGROUND: In Sri Lanka pertussis continues to circulate in the community and cases among adolescents and adults have been reported despite 95% coverage of the four dose pertussis vaccination during early childhood. Waning of immunity following natural infection or immunization may contribute to the persistent circulation. An adolescent booster dose is not included in the national immunization schedule of Sri Lanka, although this is routine practice in many countries. Therefore information on immunity to pertussis in the adolescent group is needed prior to considering vaccination schedule changes...
December 1, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27905381/-epidemiology-of-stroke-in-irkutsk-the-data-of-the-territorial-population-register-2009-2013
#13
I Yu Saldina, O A Klochikhina, V V Shprakh, L V Stakhovskaya
AIM: To study the changes in the main epidemiological induces of stroke in Irkutsk over 2009-2013. MATERIAL AND METHODS: To obtain significant epidemiological data, a unified method of territorial/population register was used. Stroke morbidity and mortality among persons aged over 25 years is presented. RESULTS: The highest indices of morbidity among men (5,6 per 1000 population) were recorded in 2010, among women (3,9 per 1000 population) in 2009...
2016: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/27905352/-future-perspective-of-pharmacoepidemiology-in-the-big-data-era-and-the-growth-of-information-sources
#14
Diego Macías Saint-Gerons, César de la Fuente Honrubia, Fernando de Andrés Trelles, Ferrán Catalá-López Catalá-López
The arrival of new drug into the market requires many years of previous research along with the need of continuous evaluation throughout the lifetime of the drug. This warrants pharmacoepidemiological research which may be defined as the study of the use and the effects of drugs in large populations. Nowadays this type of research seems more feasible thanks to the massive expansion of the information sources and data (e.g: clinical patient registries, electronic medical records). However there is a risk of information overload, fragmented evidence and given the enthusiasm aroused by the "Big Data", it must be emphasized that its nature is mainly observational, and therefore subject to bias and confusion...
December 1, 2016: Revista Española de Salud Pública
https://www.readbyqxmd.com/read/27903960/survival-outcomes-and-surgical-intervention-of-small-intestinal-neuroendocrine-tumors-a-population-based-retrospective-study
#15
Lunpo Wu, Jianfei Fu, Li Wan, Jie Pan, Sanchuan Lai, Jing Zhong, Daniel C Chung, Liangjing Wang
BACKGROUND: Small intestinal neuroendocrine tumors (SiNETs) without distant metastasis typically behave in an indolent manner, but there can be heterogeneity. We aimed to define the survival outcomes and impacts of surgical intervention. METHODS: A retrospective cohort study was conducted by using data from the Surveillance, Epidemiology, and End Results (SEER) database. Clinicopathologic features were analyzed in 4407 patients between 2000 and 2012. The cancer specific survival (CSS) was calculated by the Kaplan-Meier method...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27903668/malignant-pleural-mesothelioma-an-update-on-investigation-diagnosis-and-treatment
#16
Anna C Bibby, Selina Tsim, Nikolaos Kanellakis, Hannah Ball, Denis C Talbot, Kevin G Blyth, Nick A Maskell, Ioannis Psallidas
Malignant pleural mesothelioma is an aggressive malignancy of the pleural surface, predominantly caused by prior asbestos exposure. There is a global epidemic of malignant pleural mesothelioma underway, and incidence rates are predicted to peak in the next few years.This article summarises the epidemiology and pathogenesis of malignant pleural mesothelioma, before describing some key factors in the patient experience and outlining common symptoms. Diagnostic approaches are reviewed, including imaging techniques and the role of various biomarkers...
December 2016: European Respiratory Review: An Official Journal of the European Respiratory Society
https://www.readbyqxmd.com/read/27903497/association-between-screening-and-the-thyroid-cancer-epidemic-in-south-korea-evidence-from-a-nationwide-study
#17
Sohee Park, Chang-Mo Oh, Hyunsoon Cho, Joo Young Lee, Kyu-Won Jung, Jae Kwan Jun, Young-Joo Won, Hyun-Joo Kong, Kui Son Choi, You Jin Lee, Jin Soo Lee
OBJECTIVE:  To investigate whether screening for thyroid cancer led to the current "epidemic" in South Korea. DESIGN:  Review of the medical records of nationally representative samples of patients with a diagnosis of thyroid cancer in 1999, 2005, and 2008. SETTING:  Sample cases were randomly selected from South Korea's nationwide cancer registry, using a systematic sampling method after stratification by region. PARTICIPANTS:  5796 patients with thyroid cancer were included (891 in 1999, 2355 in 2005, and 2550 in 2008)...
November 30, 2016: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/27903359/-a-cohort-study-of-hiv-incidence-among-injecting-drug-users-in-dehong-prefecture-yunnan-province
#18
Y C Yang, Z Y Jin, R H Tang, L Li, R H Ye, Y F Cao, S J Yang, S T Yao, S Duan, N He
Objective: To investigate the incidence rates of HIV among injection drug users (IDU) in Dehong Prefecture, Yunnan Province. Methods: We recruited 1 413 HIV-negative IDU attending drug rehabilitation centers and identified a further 1 830 potential participants from a historical database from 2004-2009 using the same criteria. Fingerprint recognition technology was used to confirm the identity of all participants. A total of 3 243 HIV-negative IDU were recruited by the end of 2015, of which 2 546 (78.5%) had been followed up at least once since the initial data collection and 697 (21...
November 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/27903358/-comparison-of-genotypes-of-hepatitis-c-virus-between-chinese-and-burmese-drug-users-living-in-dehong-prefecture-yunnan-province
#19
Y K Wang, K D Feng, J B Wang, Z M Zhang, R H Tang, R H Ye, J N Zhang, Y C Yang, M F Qiu, S Duan
Objective: To analyze the distribution of hepatitis C virus (HCV) genotypes among Chinese and Burmese drug users in Dehong Prefecture, Yunnan Province. Methods: Plasma specimens and relevant epidemiological data were collected from 7 545 drug users attending rehabilitation centers and methadone clinics in Dehong Prefecture from January to September in 2015, of which 752 were positive for HCV antibodies. HCV RNA was then extracted from 139 random specimens (64 Burmese and 75 Chinese) and the CE1 and NS5B regions were amplified by nested PCR...
November 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/27903354/-the-characteristics-of-hiv-positive-men-who-have-sex-with-men-in-china-and-predictors-of-their-migration-2008-2015
#20
Q Q Qin, W Guo, L Y Wang, Z W Ding, C Cai, Y Cui, J P Sun
Objective: To characterize the migration patterns of men who have sex with men (MSM) living with HIV/AIDS in the period 2008-2015 and to characterize the determinants of their migration. Methods: All identified HIV/AIDS cases transmitted through self-reported homosexual contact reported to the National Case Reporting System(CRS) by the end of December 31, 2015 were included in this study. Data of basic demographic characteristics, household registration and address of the research objects were collected. Retrospective cohort study was used to analyze the migration characteristics of HIV/AIDS cases between 2008 and 2015...
November 6, 2016: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
keyword
keyword
88887
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"