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Surveillance bias

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https://www.readbyqxmd.com/read/29151046/the-association-between-gastro-oesophageal-reflux-disease-and-subsequent-rheumatoid-arthritis-occurrence-a-nested-case-control-study-from-taiwan
#1
Herng-Ching Lin, Sudha Xirasagar, Cha-Ze Lee, Chung-Chien Huang, Chao-Hung Chen
OBJECTIVE: Gastro-oesophageal reflux disease (GORD) is a common comorbidity among patients with rheumatoid arthritis (RA). While GORD has been attributed to the antirheumatic medications, no studies of human cohorts have investigated a link between GORD and RA. This study investigates whether GORD is associated with a subsequent RA diagnosis over a 5-year follow-up using a population-based dataset. SETTING: Taiwan PARTICIPANTS: We used data from the Taiwan Longitudinal Health Insurance Database...
November 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/29137626/treatment-outcomes-of-mdr-tuberculosis-patients-in-brazil-a-retrospective-cohort-analysis
#2
Mayara Lisboa Bastos, Lorrayne Beliqui Cosme, Geisa Fregona, Thiago Nascimento do Prado, Adelmo Inácio Bertolde, Eliana Zandonade, Mauro N Sanchez, Margareth Pretti Dalcolmo, Afrânio Kritski, Anete Trajman, Ethel Leonor Noia Maciel
BACKGROUND: Multidrug-resistant tuberculosis (MDR-TB) is a threat for the global TB epidemic control. Despite existing evidence that individualized treatment of MDR-TB is superior to standardized regimens, the latter are recommended in Brazil, mainly because drug-susceptibility tests (DST) are often restricted to first-line drugs in public laboratories. We compared treatment outcomes of MDR-TB patients using standardized versus individualized regimens in Brazil, a high TB-burden, low resistance setting...
November 14, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29122446/review-of-the-comparative-effectiveness-of-radical-prostatectomy-radiation-therapy-or-expectant-management-of-localized-prostate-cancer-in-registry-data
#3
REVIEW
Emily C Serrell, Daniel Pitts, Matthew Hayn, Lisa Beaule, Moritz H Hansen, Jesse D Sammon
Evidence regarding the effectiveness of treatment for prostate cancer is primarily based on randomized controlled trials. Long-term outcomes are generally difficult to evaluate within experimental studies and may benefit from large pools of observational data. We conducted a systematic review of administrative and registry studies to evaluate the comparative effectiveness of treatment for clinically localized prostate cancer on overall and prostate-cancer specific mortality. MATERIALS AND METHODS: In accordance with the preferred reporting items for systematic review and meta-analysis protocols (PRISMA-P, 2015), we conducted a systematic search of Ovid Medline and Embase (1946-February 2017) and identified studies that evaluated the relationship between types of treatment for localized prostate cancer and mortality...
November 6, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/29110304/beta-blockers-for-preventing-aortic-dissection-in-marfan-syndrome
#4
REVIEW
Hyun-Kyoung Koo, Kendra Ak Lawrence, Vijaya M Musini
BACKGROUND: Marfan syndrome is a hereditary disorder affecting the connective tissue and is caused by a mutation of the fibrillin-1 (FBN1) gene. It affects multiple systems of the body, most notably the cardiovascular, ocular, skeletal, dural and pulmonary systems. Aortic root dilatation is the most frequent cardiovascular manifestation and its complications, including aortic regurgitation, dissection and rupture are the main cause of morbidity and mortality. OBJECTIVES: To assess the long-term efficacy and safety of beta-blocker therapy as compared to placebo, no treatment or surveillance only in people with Marfan syndrome...
November 7, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29108135/regimens-of-ultrasound-surveillance-for-twin-pregnancies-for-improving-outcomes
#5
REVIEW
Jane G Woolcock, Rosalie M Grivell, Jodie M Dodd
BACKGROUND: Increased ultrasound surveillance of twin pregnancies has become accepted practice due to the higher risk of complications. There is no current consensus however as to the method and frequency of ultrasound monitoring that constitutes optimal care. OBJECTIVES: To systematically review the effects of different types and frequency of ultrasound surveillance for women with a twin pregnancy on neonatal, fetal and maternal outcomes. SEARCH METHODS: We searched Cochrane Pregnancy and Childbirth's Trials Register, ClinicalTrials...
November 7, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29107767/prevalence-of-methicillin-resistant-staphylococcus-aureus-isolated-from-burn-patients-a-systematic-review-and-meta-analysis
#6
REVIEW
Mohammad Emaneini, Reza Beigverdi, Willem B van Leeuwen, Hosseinali Rahdar, Morteza Karami-Zarandi, Faride Hosseinkhani, Fereshteh Jabalameli
OBJECTIVES: Methicillin-resistant Staphylococcus aureus (MRSA) has considered as a major cause of infection and mortality in burn patients, especially when nosocomially acquired. Limited information is available on the prevalence of MRSA among burn patient in Iran. METHODS: We performed a systematic search by using different electronic databases including: Medline (via Pubmed), Embase, Web of Science, and Iranian Database. Meta-analysis was performed by Comprehensive Meta-Analysis (Biostat V2...
October 28, 2017: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29100813/testicular-tumour-size-and-rete-testis-invasion-as-prognostic-factors-for-the-risk-of-relapse-of-clinical-stage-i-seminoma-testis-patients-under-surveillance-a-systematic-review-by-the-testicular-cancer-guidelines-panel
#7
REVIEW
Joost L Boormans, Javier Mayor de Castro, Lorenzo Marconi, Yuhong Yuan, M Pilar Laguna Pes, Carsten Bokemeyer, Nicola Nicolai, Ferran Algaba, Jan Oldenburg, Peter Albers
CONTEXT: Patients with clinical stage I (CS I) seminoma testis with large primary tumours and/or rete testis invasion (RTI) might have an increased risk of relapse. In recent years, these risk factors have frequently been employed to decide on adjuvant treatment. OBJECTIVE: To systematically review the literature on tumour size and RTI as risk factors for relapse in CS I seminoma testis patients under surveillance. EVIDENCE ACQUISITION: Relevant databases including Medline, Embase, and the Cochrane Library were searched up to November 2016...
October 31, 2017: European Urology
https://www.readbyqxmd.com/read/29098172/texas-adolescent-tobacco-and-marketing-surveillance-system-s-design
#8
Adriana Pérez, Melissa B Harrell, Raja I Malkani, Christian D Jackson, Joanne Delk, Prince A Allotey, Krystin J Matthews, Pablo Martinez, Cheryl L Perry
Objectives: To provide a full methodological description of the design of the wave I and II (6-month follow-up) surveys of the Texas Adolescent Tobacco and Marketing Surveillance System (TATAMS), a longitudinal surveillance study of 6(th), 8(th), and 10(th) grade students who attended schools in Bexar, Dallas, Tarrant, Harris, or Travis counties, where the 4 largest cities in Texas (San Antonio, Dallas, Fort Worth, Houston, and Austin, respectively) are located. Methods: TATAMS used a complex probability design, yielding representative estimates of these students in these counties during the 2014-2015 academic year...
April 2017: Tobacco Regulatory Science
https://www.readbyqxmd.com/read/29092812/combining-participatory-influenza-surveillance-with-modeling-and-forecasting-three-alternative-approaches
#9
John S Brownstein, Shuyu Chu, Achla Marathe, Madhav V Marathe, Andre T Nguyen, Daniela Paolotti, Nicola Perra, Daniela Perrotta, Mauricio Santillana, Samarth Swarup, Michele Tizzoni, Alessandro Vespignani, Anil Kumar S Vullikanti, Mandy L Wilson, Qian Zhang
BACKGROUND: Influenza outbreaks affect millions of people every year and its surveillance is usually carried out in developed countries through a network of sentinel doctors who report the weekly number of Influenza-like Illness cases observed among the visited patients. Monitoring and forecasting the evolution of these outbreaks supports decision makers in designing effective interventions and allocating resources to mitigate their impact. OBJECTIVE: Describe the existing participatory surveillance approaches that have been used for modeling and forecasting of the seasonal influenza epidemic, and how they can help strengthen real-time epidemic science and provide a more rigorous understanding of epidemic conditions...
November 1, 2017: JMIR Public Health and Surveillance
https://www.readbyqxmd.com/read/29080523/fatal-poisonings-involving-propoxyphene-before-and-after-voluntary-withdrawal-from-the-united-states-market-an-analysis-from-the-state-of-florida
#10
Chris Delcher, Guanming Chen, Yanning Wang, Svetla Slavova, Bruce A Goldberger
The synthetic opioid propoxyphene was a schedule IV controlled substance with multiple reported health risks before the US Food and Drug Administration issued a request for voluntary market withdrawal in November 2010. The purpose of this study is to investigate the characteristics and occurrences of propoxyphene-related deaths in Florida before and after voluntary market removal. Decedent-level toxicology data from Florida's Medical Examiners Commission was used to compare the temporal, polysubstance use, sociodemographic, and geographic profiles associated with propoxyphene-involved deaths for a pre-withdrawal (November 2008-November 2010) and post-withdrawal (December 2010-December 2012) period...
October 14, 2017: Forensic Science International
https://www.readbyqxmd.com/read/29061350/attenuation-and-protective-efficacy-of-rift-valley-fever-phlebovirus-rmp12-gm50-strain
#11
Hoai J Ly, Shoko Nishiyama, Nandadeva Lokugamage, Jennifer K Smith, Lihong Zhang, David Perez, Terry L Juelich, Alexander N Freiberg, Tetsuro Ikegami
Rift Valley fever (RVF) is a mosquito-borne zoonotic disease endemic to Africa and the Arabian Peninsula that affects sheep, cattle, goats, camels, and humans. Effective vaccination of susceptible ruminants is important for the prevention of RVF outbreaks. Live-attenuated RVF vaccines are in general highly immunogenic in ruminants, whereas residual virulence might be a concern for vulnerable populations. It is also important for live-attenuated strains to encode unique genetic markers for the differentiation from wild-type RVFV strains...
December 4, 2017: Vaccine
https://www.readbyqxmd.com/read/29058665/real-time-modelling-of-a-pandemic-influenza-outbreak
#12
Paul J Birrell, Richard G Pebody, André Charlett, Xu-Sheng Zhang, Daniela De Angelis
BACKGROUND: Real-time modelling is an essential component of the public health response to an outbreak of pandemic influenza in the UK. A model for epidemic reconstruction based on realistic epidemic surveillance data has been developed, but this model needs enhancing to provide spatially disaggregated epidemic estimates while ensuring that real-time implementation is feasible. OBJECTIVES: To advance state-of-the-art real-time pandemic modelling by (1) developing an existing epidemic model to capture spatial variation in transmission, (2) devising efficient computational algorithms for the provision of timely statistical analysis and (3) incorporating the above into freely available software...
October 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/29052014/predictive-validity-of-a-service-setting-based-measure-to-identify-infancy-mental-health-problems-a-population-based-cohort-study
#13
Janni Ammitzbøll, Lau Caspar Thygesen, Bjørn E Holstein, Anette Andersen, Anne Mette Skovgaard
Measures to identify infancy mental health problems are essential to guide interventions and reduce the risk of developmental psychopathology in early years. We investigated a new service-setting-based measure the Copenhagen Infant Mental Health Screening (CIMHS) within the general child health surveillance by community health nurses (CHN). The study population of 2973 infants was assessed by CIMHS at age 9-10 months. A subsample of 416 children was examined at age 1½ years, using parent interviews including the Child Behavior Checklist (CBCL 1½-5), Check List of Autism and Toddlers (CHAT), Infant-Toddler Symptom Checklist (ITSCL), and the Bayley Scales of Infant and Toddler Development (BSID) and observations of behavior, communication, and interaction...
October 20, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/29041965/enrichment-allows-identification-of-diverse-rare-elements-in-metagenomic-resistome-virulome-sequencing
#14
Noelle R Noyes, Maggie E Weinroth, Jennifer K Parker, Chris J Dean, Steven M Lakin, Robert A Raymond, Pablo Rovira, Enrique Doster, Zaid Abdo, Jennifer N Martin, Kenneth L Jones, Jaime Ruiz, Christina A Boucher, Keith E Belk, Paul S Morley
BACKGROUND: Shotgun metagenomic sequencing is increasingly utilized as a tool to evaluate ecological-level dynamics of antimicrobial resistance and virulence, in conjunction with microbiome analysis. Interest in use of this method for environmental surveillance of antimicrobial resistance and pathogenic microorganisms is also increasing. In published metagenomic datasets, the total of all resistance- and virulence-related sequences accounts for < 1% of all sequenced DNA, leading to limitations in detection of low-abundance resistome-virulome elements...
October 17, 2017: Microbiome
https://www.readbyqxmd.com/read/29040885/bimodal-decompression-sickness-onset-times-are-not-related-to-dive-type-or-event-severity
#15
Amy E King, F Gregory Murphy, Laurens E Howle
Human decompression sickness (DCS) is a condition associated with depressurization during underwater diving. Human research dive trial data containing dive outcome (DCS, no-DCS) and symptom information are used to calibrate probabilistic DCS models. DCS symptom onset time information is visualized using occurrence density functions (ODF) which plot the DCS onset rate per unit time. For the BIG292 human dive trial data set, a primary U.S. Navy model calibration set, the ODFs are bimodal, however probabilistic models do not produce bimodal ODFs...
October 10, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29037237/the-role-of-national-registries-in-improving-patient-safety-for-hip-and-knee-replacements
#16
Anne Lübbeke, Alan J Silman, Daniel Prieto-Alhambra, Amanda I Adler, Christophe Barea, Andrew J Carr
BACKGROUND: The serious adverse events associated with metal on metal hip replacements have highlighted the importance of improving methods for monitoring surgical implants. The new European Union (EU) device regulation will enforce post-marketing surveillance based on registries among other surveillance tools. Europe has a common regulatory environment, a common market for medical devices, and extensive experience with joint replacement registries. In this context, we elaborate how joint replacement registries, while building on existing structure and data, can better ensure safety and balance risks and benefits...
October 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29027621/use-of-carboxyhemoglobin-as-a-biomarker-of-environmental-co-exposure-critical-evaluation-of-the-literature
#17
Agnese Veronesi, Valentina Pecoraro, Stefano Zauli, Marta Ottone, Giovanni Leonardi, Paolo Lauriola, Tommaso Trenti
Carbon monoxide (CO) poisoning is the primary cause for access to emergency department (ED) services for more than 50,000 persons in Europe and the USA every year. CO poisoning diagnosis is based on multiple factors and is usually confirmed by high carboxyhemoglobin (COHb) levels in the blood. We conducted a systematic evaluation of literature to investigate the usefulness of COHb as a biomarker of environmental CO exposure. We conducted an electronic search in Medline, Embase, and the Cochrane Library databases...
October 13, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29017552/syphilis-in-the-americas-a-protocol-for-a-systematic-review-of-syphilis-prevalence-and-incidence-in-four-high-risk-groups-1980-2016
#18
Ken Kitayama, Eddy R Segura, Jordan E Lake, Amaya G Perez-Brumer, Catherine E Oldenburg, Bethany A Myers, Paria Pourjavaheri, Chinomnso N Okorie, Robinson L Cabello, Jesse L Clark
BACKGROUND: Syphilis infection has recently resurfaced as a significant public health problem. Although there has been a tremendous amount of research on the epidemiology of syphilis, there has been limited work done to synthesize the extensive body of research and systematically estimate patterns of disease within high-risk groups in the Americas. The purpose of this systematic review and meta-analysis is to (1) summarize recent patterns of syphilis infection in North and South America among four high-risk groups (MSM, transgender women, sex workers, and incarcerated individuals) from 1980 to 2016, (2) identify and differentiate regional geographic epidemiologic characteristics, and (3) compare the epidemics of the economically developed countries of North America from the developing countries and public health systems of Latin America and the Caribbean...
October 10, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/29017005/early-planned-removal-of-umbilical-venous-catheters-to-prevent-infection-in-newborn-infants
#19
REVIEW
Adrienne Gordon, Mark Greenhalgh, William McGuire
BACKGROUND: Lengthy duration of use may be a risk factor for umbilical venous catheter-associated bloodstream infection in newborn infants. Early planned removal of umbilical venous catheters (UVCs) is recommended to reduce the incidence of infection and associated morbidity and mortality. OBJECTIVES: To compare the effectiveness of early planned removal of UVCs (up to two weeks after insertion) versus an expectant approach or a longer fixed duration in preventing bloodstream infection and other complications in newborn infants...
October 10, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29016343/passively-versus-actively-detected-malaria-similar-genetic-diversity-but-different-complexity-of-infection
#20
Zuleima Pava, Irene Handayuni, Leily Trianty, Retno A S Utami, Yusrifar K Tirta, Agatha M Puspitasari, Faustina Burdam, Enny Kenangalem, Grennady Wirjanata, Steven Kho, Hidayat Trimarsanto, Nicholas Anstey, Jeanne Rini Poespoprodjo, Rintis Noviyanti, Ric N Price, Jutta Marfurt, Sarah Auburn
The surveillance of malaria is generally undertaken on the assumption that samples passively collected at health facilities are comparable to or representative of the broader Plasmodium reservoir circulating in the community. Further characterization and comparability of the hidden asymptomatic parasite reservoir are needed to inform on the potential impact of sampling bias. This study explores the impact of sampling strategy on molecular surveillance by comparing the genetic make-up of Plasmodium falciparum and Plasmodium vivax isolates collected by passive versus active case detection...
September 5, 2017: American Journal of Tropical Medicine and Hygiene
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