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Medical bias

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https://www.readbyqxmd.com/read/28431278/intranasal-oxytocin-does-not-modulate-jumping-to-conclusions-in-schizophrenia-potential-interactions-with-caudate-volume-and-baseline-social-functioning
#1
Fernando Caravaggio, Philip Gerretsen, Wanna Mar, Jun Ku Chung, Eric Plitman, Shinichiro Nakajima, Julia Kim, Yusuke Iwata, Raihaan Patel, M Mallar Chakravarty, Gary Remington, Ariel Graff-Guerrero, Mahesh Menon
BACKGROUND: Patients with schizophrenia (SCZ) tend to sample less information when making a decision, jumping to conclusions (JTC) without sufficient evidence. This "JTC bias" may be a trait marker of the disease and may not improve with antipsychotic treatment. We conducted a double-blind, placebo-controlled trial to test whether intranasal oxytocin could reduce JTC in stable, medicated patients with SCZ and healthy controls (HCs). We also explored whether striatal volume, clinical symptoms, and baseline social functioning (SF) was related to JTC performance...
March 31, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28431202/pharmacological-interventions-for-acute-pancreatitis
#2
REVIEW
Elisabetta Moggia, Rahul Koti, Ajay P Belgaumkar, Federico Fazio, Stephen P Pereira, Brian R Davidson, Kurinchi Selvan Gurusamy
BACKGROUND: In people with acute pancreatitis, it is unclear what the role should be for medical treatment as an addition to supportive care such as fluid and electrolyte balance and organ support in people with organ failure. OBJECTIVES: To assess the effects of different pharmacological interventions in people with acute pancreatitis. SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL, 2016, Issue 9), MEDLINE, Embase, Science Citation Index Expanded, and trial registers to October 2016 to identify randomised controlled trials (RCTs)...
April 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28430833/on-the-need-for-quantitative-bias-analysis-in-the-peer-review-process
#3
Matthew P Fox, Timothy L Lash
Peer review is central to the process through which epidemiologists generate evidence to inform public health and medical interventions. Reviewers thereby act as critical gatekeepers to high-quality research. They are asked to carefully consider the validity of the proposed work or research findings by paying careful attention to the methodology and critiquing the importance of the insight gained. However, although many have noted problems with the peer-review system for both manuscripts and grant submissions, few solutions have been proposed to improve the process...
April 18, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28429473/surgery-for-limited-stage-small-cell-lung-cancer
#4
REVIEW
Hayley Barnes, Katharine See, Stephen Barnett, Renée Manser
BACKGROUND: Current treatment guidelines for limited-stage small-cell lung cancer (SCLC) recommend concomitant platinum-based chemo-radiotherapy plus prophylactic cranial irradiation, based on the premise that SCLC disseminates early, and is chemosensitive. However, although there is usually a favourable initial response, relapse is common and the cure rate for limited-stage SCLC remains relatively poor. Some recent clinical practice guidelines have recommended surgery for stage 1 (limited) SCLC followed by adjuvant chemotherapy, but this recommendation is largely based on the findings of observational studies...
April 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28429448/white-matter-microstructure-variations-contribute-to-neurological-soft-signs-in-healthy-adults
#5
Dusan Hirjak, Philipp A Thomann, Robert C Wolf, Katharina M Kubera, Caspar Goch, Jan Hering, Klaus H Maier-Hein
OBJECTIVE: Neurological soft signs (NSS) are core features of psychiatric disorders with significant neurodevelopmental origin. However, it is unclear whether NSS correlates are associated with neuropathological processes underlying the disease or if they are confounded by medication. Given that NSS are also present in healthy persons (HP), investigating HP could reveal NSS correlates, which are not biased by disease-specific processes or drug treatment. Therefore, we used a combination of diffusion MRI analysis tools to provide a framework of specific white matter (WM) microstructure variations underlying NSS in HP...
April 21, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28428716/transition-after-pediatric-liver-transplantation-perceptions-of-adults-adolescents-and-parents
#6
Norman Junge, Katarina Migal, Imeke Goldschmidt, Ulrich Baumann
AIM: To develop a locally adapted, patient-focused transition-program, we evaluated the perceptions of adult and adolescent patients and parents regarding transition-programs and transfer. METHODS: We evaluated these perceptions by analyzing the responses of pre-transfer adolescents (n = 57), their parents (n = 57) and post-transfer adults (n = 138) from a cohort of pediatric-liver-transplant-patients using a self-designed questionnaire. Furthermore, we compared a responder group with a non-responder group as well as the provided answers with baseline characteristics and clinical outcomes to exclude selection bias, characterize high-risk patients for non-adherence and test for gender differences...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28428154/bias-in-medicine-in-the-context-of-the-film-aligarh
#7
Aiswarya Sasi
In today's world, I feel another sin needs to be added to the list of the seven deadly sins, viz the sin of intolerance. We hear this term on the news every other day and see society display this attitude more often than not. While the movie Aligarh raised myriad social issues, as a medical student, I would like to speak of one in particular - the influence of stigma on healthcare.
March 21, 2017: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/28427389/defining-micro-epidemiology-for-malaria-elimination-systematic-review-and-meta-analysis
#8
Melanie Bannister-Tyrrell, Kristien Verdonck, Susanna Hausmann-Muela, Charlotte Gryseels, Joan Muela Ribera, Koen Peeters Grietens
BACKGROUND: Malaria risk can vary markedly between households in the same village, or between villages, but the determinants of this "micro-epidemiological" variation in malaria risk remain poorly understood. This study aimed to identify factors that explain fine-scale variation in malaria risk across settings and improve definitions and methods for malaria micro-epidemiology. METHODS: A systematic review of studies that examined risk factors for variation in malaria infection between individuals, households, clusters, hotspots, or villages in any malaria-endemic setting was conducted...
April 20, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28427340/does-the-association-between-adherence-to-statin-medications-and-mortality-depend-on-measurement-approach-a-retrospective-cohort-study
#9
Mhd Wasem Alsabbagh, Dean Eurich, Lisa M Lix, Thomas W Wilson, David F Blackburn
BACKGROUND: The aim of this study was to examine the relationship between mortality and statin adherence using two different approaches to adherence measurement (summary versus repeated-measures). METHODS: A retrospective cohort study was conducted using administrative data from Saskatchewan, Canada between 1994 and 2008. Eligible individuals received a prescription for a statin following hospitalization for acute coronary syndrome (ACS). Adherence was measured using proportion of days covered (PDC) expressed either as: 1) a fixed summary measure, or 2) as a repeatedly measured covariate...
April 20, 2017: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/28426793/prevalence-of-cardiovascular-medication-on-secondary-prevention-after-myocardial-infarction-in-china-between-1995-2015-a-systematic-review-and-meta-analysis
#10
Min Zhao, Kerstin Klipstein-Grobusch, Xin Wang, Johannes B Reitsma, Dong Zhao, Diederick E Grobbee, Ian Graham, Ilonca Vaartjes
BACKGROUND: Myocardial Infarction (MI) has become a major cause of morbidity and mortality in China, but little is known about the prevalence of guideline-recommended cardiovascular medications after MI events over the last two decades. This systematic review and meta-analysis aims to summarize cardiovascular medication use between 1995-2015 and to assess factors in associated with the trends in cardiovascular medications. METHOD: A systematic search was conducted in four databases (Pubmed, Embase, CENTRAL, and CNKI) to obtain observational studies published between 1995 and 2015, reporting on the use of cardiovascular medications in China...
2017: PloS One
https://www.readbyqxmd.com/read/28426738/is-antiplatelet-treatment-effective-at-attenuating-the-progression-of-white-matter-hyperintensities
#11
Cindy W Yoon, Yoonjae Choi, Seun Jeon, Dae Hyung Lee, Byung-Nam Yoon, Hee-Kwon Park, Joung-Ho Rha
OBJECTIVE: We performed this study to assess the effect of an antiplatelet agent on the progression of white matter hyperintensities (WMH). METHODS: From August 2003 to May 2005, we consecutively enrolled patients who underwent brain magnetic resonance imaging (MRI) for health check-up purposes and showed no significant findings other than WMH of any degree. Patients were divided into two groups based on whether or not they received antiplatelet therapy. All patients had a follow-up brain MRI after 5 years and WMH volume change was measured using imaging analysis software...
2017: PloS One
https://www.readbyqxmd.com/read/28425616/statin-use-and-risk-of-multiple-myeloma-an-analysis-from-the-cancer-research-network
#12
Mara M Epstein, George Divine, Chun R Chao, Karen E Wells, Heather Spencer Feigelson, Delia Scholes, Douglas Roblin, Marianne Ulcickas Yood, Lawrence S Engel, Andrew Taylor, Joan Fortuny, Laurel A Habel, Christine C Johnson
Animal and human data suggest statins may be protective against developing multiple myeloma; however, findings may be biased by the interrelationship with lipid levels. We investigated the association between statin use and risk of multiple myeloma in a large US population, with an emphasis on accounting for this potential bias. We conducted a case-control study nested within 6 US integrated healthcare systems participating in the National Cancer Institute-funded Cancer Research Network. Adults aged ≥40 years who were diagnosed with multiple myeloma from 1998-2008 were identified through cancer registries (N=2532)...
April 20, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28425119/mean-intercept-anisotropy-analysis-of-porous-media-i-analytic-formulae-for-anisotropic-boolean-models
#13
Michael A Klatt, Gerd E Schröder-Turk, Klaus Mecke
PURPOSE: Structure-property relations, which relate the shape of the microstructure to physical properties such as transport or mechanical properties, need sensitive measures of structure. What are suitable fabric tensors to quantify the shape of anisotropic heterogeneous materials? The mean intercept length is among the most commonly used characteristics of anisotropy in porous media, for example, of trabecular bone in medical physics. METHODS: We analyze the orientation-biased Boolean model, a versatile stochastic model that represents microstructures as overlapping grains with an orientation bias towards a preferred direction...
April 20, 2017: Medical Physics
https://www.readbyqxmd.com/read/28424542/why-do-psychiatric-patients-stop-antipsychotic-medication-a-systematic-review-of-reasons-for-nonadherence-to-medication-in-patients-with-serious-mental-illness
#14
REVIEW
Dawn I Velligan, Martha Sajatovic, Ainslie Hatch, Pavel Kramata, John P Docherty
BACKGROUND: Antipsychotic medication reduces the severity of serious mental illness (SMI) and improves patient outcomes only when medicines were taken as prescribed. Nonadherence to the treatment of SMI increases the risk of relapse and hospitalization and reduces the quality of life. It is necessary to understand the factors influencing nonadherence to medication in order to identify appropriate interventions. This systematic review assessed the published evidence on modifiable reasons for nonadherence to antipsychotic medication in patients with SMI...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28424273/certainty-of-genuine-treatment-increases-drug-responses-among-intellectually-disabled-patients
#15
Karin B Jensen, Irving Kirsch, Moa Pontén, Annelie Rosén, Kathy Yang, Randy L Gollub, Vincent des Portes, Ted J Kaptchuk, Aurore Curie
OBJECTIVE: To determine the placebo component of treatment responses in patients with intellectual disability (ID). METHODS: A statistical meta-analysis comparing bias-corrected effect sizes (Hedges g) of drug responses in open-label vs placebo-controlled clinical trials was performed, as these trial types represent different certainty of receiving genuine treatment (100% vs 50%). Studies in fragile X, Down, Prader-Willi, and Williams syndrome published before June 2015 were considered...
April 19, 2017: Neurology
https://www.readbyqxmd.com/read/28422795/trial-design-and-endpoint-evaluation-in-clinical-studies-addressing-chronic-back-pain
#16
Peter Staats
STUDY DESIGN: A review of the literature evaluating clinical trials of chronic back pain. OBJECTIVE: To assist physicians in assessing the quality of clinical trial data to make the most informed treatment decisions. SUMMARY OF BACKGROUND DATA: Chronic pain is a tremendous public health issue, affecting close to 100 million adults in the United States, and costs the American people billions of dollars. One traditional treatment approach, the long-term use of opiate medications, has recently come under intense scrutiny for problems with complications, diversion, abuse, addiction and lack of efficacy...
April 18, 2017: Spine
https://www.readbyqxmd.com/read/28421600/lay-led-and-peer-support-interventions-for-adolescents-with-asthma
#17
REVIEW
Kayleigh M Kew, Robin Carr, Iain Crossingham
BACKGROUND: Adolescents with asthma are at high risk of poor adherence with treatment. This may be compounded by activities that worsen asthma, in particular smoking. Additional support above and beyond routine care has the potential to encourage good self-management. We wanted to find out whether sessions led by their peers or by lay leaders help to reduce these risks and improve asthma outcomes among adolescents. OBJECTIVES: To assess the safety and efficacy of lay-led and peer support interventions for adolescents with asthma...
April 19, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28421020/social-dominance-orientation-dispositional-empathy-and-need-for-cognitive-closure-moderate-the-impact-of-empathy-skills-training-but-not-patient-contact-on-medical-students-negative-attitudes-toward-higher-weight-patients
#18
Angela Meadows, Suzanne Higgs, Sara E Burke, John F Dovidio, Michelle van Ryn, Sean M Phelan
Anti-fat bias in healthcare providers and medical students has serious implications for quality of care of higher-weight patients. Studies of interventions aimed at reducing anti-fat attitudes in medical students have generally been disappointing, with little enduring effect. It is possible that some students may be more receptive to prejudice-reducing influences than others, due to underlying differences in their personal characteristics. It is also possible that attitudes toward patients, specifically, may differ from anti-fat attitudes in general, and prejudice-reduction effectiveness on patient-specific attitudes has not yet been evaluated...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28420804/contemporary-trends-and-outcomes-associated-with-the-preprocedural-use-of-oral-p2y12-inhibitors-in-patients-undergoing-percutaneous-coronary-intervention-insights-from-the-blue-cross-blue-shield-of-michigan-cardiovascular-consortium-bmc2
#19
Devraj Sukul, Milan Seth, Simon R Dixon, Akshay Khandelwal, Thomas A LaLonde, Hitinder S Gurm
OBJECTIVES: We sought to describe trends in the use of preprocedural P2Y12 inhibitors and their clinical impact in patients undergoing percutaneous coronary intervention (PCI). BACKGROUND: Oral P2Y12 inhibitors are ubiquitously used medications; however, the specific timing of initial P2Y12 inhibitor administration remains intensely debated. METHODS: Our study population comprised 74,053 consecutive patients undergoing PCI at 47 hospitals in Michigan from January 2013 through June 2015...
April 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28419725/healthcare-costs-and-medication-adherence-among-patients-with-fibromyalgia-combination-medication-vs-duloxetine-milnacipran-venlafaxine-and-pregabalin-initiators
#20
Nicole M Marlow, Kit N Simpson, Ivana A Vaughn, Ara Jo, James S Zoller, E Baron Short
OBJECTIVE: To examine medication adherence and healthcare costs for combination prescription initiators (duloxetine/milnacipran/venlafaxine with pregabalin) versus monotherapy initiators (duloxetine, milnacipran, venlafaxine, and pregabalin) among patients with fibromyalgia syndrome (FMS). METHODS: Our retrospective cohort study used claims data for the South Carolina Blue Cross Blue Shield State Health Plan (SHP). Patients with FMS aged ≥18 years, with prescription initiation from July 1, 2007 through June 30, 2010, and SHP enrollment for 12-months pre- and post-index periods were included (combination: N=100, pregabalin: N=665, duloxetine: N=713, milnacipran: N=131, venlafaxine: N=272)...
April 18, 2017: Pain Practice: the Official Journal of World Institute of Pain
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