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https://www.readbyqxmd.com/read/28938712/invited-commentary-the-need-for-cognitive-science-in-methodology
#1
Sander Greenland
There is no complete solution for the problem of abuse of statistics, but methodological training needs to cover cognitive biases and other psychosocial factors affecting inferences. The present paper discusses 3 common cognitive distortions: 1) dichotomania, the compulsion to perceive quantities as dichotomous even when dichotomization is unnecessary and misleading, as in inferences based on whether a P value is "statistically significant"; 2) nullism, the tendency to privilege the hypothesis of no difference or no effect when there is no scientific basis for doing so, as when testing only the null hypothesis; and 3) statistical reification, treating hypothetical data distributions and statistical models as if they reflect known physical laws rather than speculative assumptions for thought experiments...
September 15, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28938685/a-case-control-study-of-the-association-between-the-egfr-gene-and-glioma-risk-in-a-chinese-han-population
#2
Mengdan Yan, Jingjie Li, Na He, Xugang Shi, Shuli Du, Bin Li, Tianbo Jin
The Epidermal Growth Factor Receptor gene has been reported to be involved in the progression of gliomas which is one of the deadliest primary brain tumors in humans. To determine potential association between EGFR and glioma risk, we performed a case-control study with 394 glioma patients and 298 cancer-free controls in which captured a total of 8 tag single nucleotide polymorphisms of EGFR gene from Xi'an, China. SPSS 19.0 statistical packages, χ(2) test, genetic model analysis and SHEsis software platform were analyzed s the variants in EGFR gene associations with glioma risk...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938640/association-of-two-obesity-related-gene-polymorphisms-lepg2548a-rs7799039-and-leprq223r-rs1137101-with-the-risk-of-breast-cancer
#3
Hui Luan, Hong Zhang, Ying Li, Ping Wang, Lifei Cao, Honglan Ma, Qing Cui, Gang Tian
Many studies have been performed to investigate the correlation of leptin (LEP) and leptin receptor (LEPR) polymorphisms with breast cancer (BC) risk, however the results are inconclusive. To obtain a more precise estimation, we conducted this meta-analysis. We searched PubMed, EMBASE, and Web of Science databases to identify qualified studies. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were used to evaluate the association. Eight eligible studies (2,124 cases and 5,476 controls) for LEP G2548A (rs7799039) polymorphism, and thirteen studies (5,282 cases and 6,140 controls) for LEPR Q223R (rs1137101) polymorphism were included in our study...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938579/the-effects-of-air-pollution-on-mortality-and-clinicopathological-features-of-esophageal-cancer
#4
Xiaochen Huang, Shanghui Guan, Jiangfeng Wang, Linli Zhao, Yibin Jia, Zilong Lu, Cuiping Yin, Shengsi Yang, Qingxu Song, Lihui Han, Cong Wang, Jingyi Li, Wei Zhou, Xiaolei Guo, Yufeng Cheng
This study aimed to estimate the associations between air pollution and esophageal cancer. In the ecologic cross-sectional study, correlation analyses were made between city-level mean concentrations of particulate matter less than 10μm in aerodynamic diameter (PM10), SO2, NO2 and city-level age-standardized mortality rates of esophageal cancer in Shandong Province, China. PM10 (p=0.046) and NO2 (p=0.03) both had significant linear correlations with esophageal cancer mortality rates. After introducing smoking as a risk factor in models of multiple linear regression analyses, PM10 was still an independent risk factor that increased esophageal cancer mortality rates...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938543/predictive-clinical-model-of-tumor-response-after-chemoradiation-in-rectal-cancer
#5
Marisa D Santos, Cristina Silva, Anabela Rocha, Carlos Nogueira, Fernando Castro-Poças, António Araujo, Eduarda Matos, Carina Pereira, Rui Medeiros, Carlos Lopes
Survival improvement in rectal cancer treated with neoadjuvant chemoradiotherapy (nCRT) is achieved only if pathological response occurs. Mandard tumor regression grade (TRG) proved to be a valid system to measure nCRT response. The ability to predict tumor response before treatment may significantly have impact the selection of patients for nCRT in rectal cancer. The aim is to identify potential predictive pretreatment factors for Mandard response and build a clinical predictive model design. 167 patients with locally advanced rectal cancer were treated with nCRT and curative surgery...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28938500/acceptability-of-two-colorectal-cancer-screening-tests-pain-as-a-key-determinant-in-sigmoidoscopy
#6
Benedicte Kirkøen, Paula Berstad, Edoardo Botteri, Eirin Dalén, Jens Aksel Nilsen, Geir Hoff, Thomas de Lange, Tomm Bernklev
Background Participants' experience with a screening test can influence adherence, and therefore the efficacy of screening programs. We compared screening with unsedated flexible sigmoidoscopy and fecal immunochemical testing (FIT) for participants' satisfaction with the decision and for willingness to repeat colorectal cancer screening. Methods In a prospective, randomized trial 3257 individuals (50 - 74 years) were invited to either flexible sigmoidoscopy or FIT (1:1), of whom 1650 took up the offer (52...
September 22, 2017: Endoscopy
https://www.readbyqxmd.com/read/28938327/adipose-tissue-derived-stromal-vascular-fraction-increases-osteogenesis-in-an-experimental-design-zygomatic-bone-defect-model
#7
Gaye Toplu, Derya Ozcelik, Merdan Serin, Havva Erdem, Arzu Turkseven Topacoglu
INTRODUCTION: Facial bone defects are frequently encountered problems in clinical practice. Bone grafts, flaps, and alloplastic materials are often used in their treatment. This leads to donor site morbidity and prolongation of the operation. The authors have planned this study to examine whether adipose tissue derived stromal vascular fraction (SVF) has an osteogenic effect in the critical sized membranous bone defect of the zygomatic bone. MATERIALS AND METHODS: Twenty male Wistar Albino rats were used...
September 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28938284/longitudinal-validation-of-the-promis-physical-function-item-bank-in-upper-extremity-trauma
#8
Aaron J Kaat, Nan E Rothrock, Mark S Vrahas, Robert V OʼToole, Sarah K Buono, Timothy Zerhusen, Richard C Gershon
OBJECTIVES: To evaluate the reliability, validity, and responsiveness of the Patient-Reported Outcomes Measurement Information System (PROMIS) Upper Extremity Computer Adaptive Test (UE-CAT) and the 8-item Physical Function short form (PF-SF8a) for monitoring outcomes after musculoskeletal injuries in upper extremity trauma patients. DESIGN: Prospective cohort study. SETTING: Two Level-I trauma centers. PATIENTS: Eligible consecutive patients were approached and 424 consented at time 1 (median 9...
October 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28938270/bariatric-surgery-and-the-risk-of-cancer-in-a-large-multisite-cohort
#9
Daniel P Schauer, Heather Spencer Feigelson, Corinna Koebnick, Bette Caan, Sheila Weinmann, Anthony C Leonard, J David Powers, Panduranga R Yenumula, David E Arterburn
OBJECTIVE: To determine whether bariatric surgery is associated with a lower risk of cancer. BACKGROUND: Obesity is strongly associated with many types of cancer. Few studies have examined the relationship between bariatric surgery and cancer risk. METHODS: We conducted a retrospective cohort study of patients undergoing bariatric surgery between 2005 and 2012 with follow-up through 2014 using data from a large integrated health insurance and care delivery systems with 5 study sites...
September 21, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28938212/the-problem-of-identifying-arsenic-anomalies-in-the-basin-of-sahand-dam-through-risk-based-soft-modelling
#10
Ata Allah Nadiri, Fariba Sadeghi Aghdam, Rahman Khatibi, Asghar Asghari Moghaddam
An investigation is undertaken to identify arsenic anomalies at the complex of Sahand dam, East Azerbaijan, northwest Iran. The complex acts as a system, in which the impounding reservoir catalyses system components related to Origin-Source-Pathways-Receptor-Consequence (OSPRC) viewed as a risk system. This 'conceptual framework' overlays a 'perceptual model' of the physical system, in which arsenic with geogenic origins diffused into the formations through extensive fractures swept through the region during the Miocene era...
September 19, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28938101/exposure-to-particulate-matter-air-pollution-and-risk-of-multiple-sclerosis-in-two-large-cohorts-of-us-nurses
#11
N Palacios, K L Munger, K C Fitzgerald, J E Hart, T Chitnis, A Ascherio, F Laden
BACKGROUND: Air pollution is thought to raise the risk of neurological disease by promoting neuroinflammation, oxidative stress, glial activation and cerebrovascular damage. Multiple Sclerosis is a common auto-immune disorder, primarily affecting young women. We conducted, to a large prospective study of particulate matter (PM) exposure and multiple sclerosis (MS) risk in two prospective cohorts of women: the Nurses Health Study (NHS) and the Nurses Health Study II (NHS II). METHODS: Cumulative average exposure to different size fractions of PM up to the onset of MS was estimated using spatio-temporal models...
September 19, 2017: Environment International
https://www.readbyqxmd.com/read/28937984/evidence-of-complex-contagion-of-information-in-social-media-an-experiment-using-twitter-bots
#12
Bjarke Mønsted, Piotr Sapieżyński, Emilio Ferrara, Sune Lehmann
It has recently become possible to study the dynamics of information diffusion in techno-social systems at scale, due to the emergence of online platforms, such as Twitter, with millions of users. One question that systematically recurs is whether information spreads according to simple or complex dynamics: does each exposure to a piece of information have an independent probability of a user adopting it (simple contagion), or does this probability depend instead on the number of sources of exposure, increasing above some threshold (complex contagion)? Most studies to date are observational and, therefore, unable to disentangle the effects of confounding factors such as social reinforcement, homophily, limited attention, or network community structure...
2017: PloS One
https://www.readbyqxmd.com/read/28937622/specificities-of-human-hepatocellular-carcinoma-developed-on-non-alcoholic-fatty-liver-disease-in-absence-of-cirrhosis-revealed-by-tissue-extracts-%C3%A2-h-nmr-spectroscopy
#13
Camille Teilhet, Daniel Morvan, Juliette Joubert-Zakeyh, Anne-Sophie Biesse, Bruno Pereira, Sylvie Massoulier, Pierre Dechelotte, Denis Pezet, Emmanuel Buc, Géraldine Lamblin, Michel Peoc'h, Jack Porcheron, Marie-Paule Vasson, Armando Abergel, Aicha Demidem
There is a rising incidence of non-alcoholic fatty liver disease (NAFLD) as well as of the frequency of Hepato-Cellular Carcinoma (HCC) associated with NAFLD. To seek for putative metabolic pathways specific of the NAFLD etiology, we performed comparative metabolomics between HCC associated with NAFLD and HCC associated with cirrhosis. The study included 28 pairs of HCC tissue versus distant Non-Tumoral Tissue (NTT) collected from patients undergoing hepatectomy. HCC was associated with cirrhosis (n = 9), normal liver (n = 6) and NAFLD (n = 13)...
September 22, 2017: Metabolites
https://www.readbyqxmd.com/read/28937588/robust-dehaze-algorithm-for-degraded-image-of-cmos-image-sensors
#14
Chen Qu, Du-Yan Bi, Ping Sui, Ai-Nong Chao, Yun-Fei Wang
The CMOS (Complementary Metal-Oxide-Semiconductor) is a new type of solid image sensor device widely used in object tracking, object recognition, intelligent navigation fields, and so on. However, images captured by outdoor CMOS sensor devices are usually affected by suspended atmospheric particles (such as haze), causing a reduction in image contrast, color distortion problems, and so on. In view of this, we propose a novel dehazing approach based on a local consistent Markov random field (MRF) framework. The neighboring clique in traditional MRF is extended to the non-neighboring clique, which is defined on local consistent blocks based on two clues, where both the atmospheric light and transmission map satisfy the character of local consistency...
September 22, 2017: Sensors
https://www.readbyqxmd.com/read/28937500/serum-adiponectin-levels-in-patients-with-systemic-lupus-erythematosus-a-meta-analysis
#15
Ahmed Ali Dini, Peng Wang, Dong-Qing Ye
BACKGROUND: Higher serum adiponectin in systemic lupus erythematosus (SLE) patients mitigates the inflammatory response. Previous studies investigated serum adiponectin level in SLE patients compared with control subjects, yielding inconsistent results. OBJECTIVE: The aim of this meta-analysis was to assess the difference between serum adiponectin levels in SLE patients compared with control subjects. METHODS: MEDLINE, PubMed, EMBASE, and Web of Science were searched from inception to August 31, 2016, to identify all observational studies that examined the relationship between serum adiponectin levels and SLE...
September 21, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28937471/serum-adiponectin-levels-in-patients-with-systemic-lupus-erythematosus-a-meta-analysis
#16
Ahmed Ali Dini, Peng Wang, Dong-Qing Ye
BACKGROUND: Higher serum adiponectin in systemic lupus erythematosus (SLE) patients mitigates the inflammatory response. Previous studies investigated serum adiponectin level in SLE patients compared with control subjects, yielding inconsistent results. OBJECTIVE: The aim of this meta-analysis was to assess the difference between serum adiponectin levels in SLE patients compared with control subjects. METHODS: MEDLINE, PubMed, EMBASE, and Web of Science were searched from inception to August 31, 2016, to identify all observational studies that examined the relationship between serum adiponectin levels and SLE...
October 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/28937454/life-expectancy-and-metastatic-spine-scoring-systems-an-academic-institutional-experience
#17
Brian T Ragel, Gustavo A Mendez, Justin Reddington, David Ferachi, Charlotte D Kubicky, Travis C Philipp, Natalie L Zusman, Paul Klimo, Robert Hart, Jung Yoo, Alex C Ching
STUDY DESIGN: A retrospective data collection study with application of metastatic spine scoring systems. OBJECTIVES: To apply the Tomita and revised Tokuhashi scoring systems to a surgical cohort at a single academic institution and analyze spine-related surgical morbidity and mortality rates. SUMMARY OF BACKGROUND DATA: Surgical management of metastatic spine patients requires tools that can accurately predict patient survival, as well as knowledge of morbidity and mortality rates...
October 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28937417/age-related-changes-in-ocular-aberrations-and-the-yamagata-study-funagata
#18
Hiroyuki Namba, Ryo Kawasaki, Akira Sugano, Takanori Murakami, Koichi Nishitsuka, Takeo Kato, Takamasa Kayama, Hidetoshi Yamashita
Human vision quality is influenced by ocular aberrations, including astigmatism and higher-order aberrations (HOAs), in combination with other optical factors. In this study, we introduce the results and perceptions of previous studies investigating these aberrations. We also introduce our results obtained as part of the Yamagata Study (Funagata), a population-based epidemiologic study. To investigate the astigmatic change with age, researchers have used the power vector analysis, allowing incorporation of the magnitude and axis of astigmatism into statistical analyses...
September 19, 2017: Cornea
https://www.readbyqxmd.com/read/28937266/statistical-analysis-of-adcs-and-clinical-biomarkers-in-detecting-acute-renal-transplant-rejection
#19
Elizabeth Hollis, Mohamed Shehata, Mohamed Abou El-Ghar, Mohammed Ghazal, Tarek Eldiasty, Michael Merchant, Andrew E Switala, Ayman El-Baz
OBJECTIVE: To determine which parameters are correlated with transplanted kidney status in patients who have undergone kidney transplantation and can be used for early assessment of acute renal rejection. METHODS: The study included 16 patients with stable renal allografts (Group 1) and 37 patients with rejected allografts (Group 2), determined by renal biopsy post transplantation. All patients' kidneys were evaluated using diffusion-weighted MRI (DW-MRI), in which both clincal and MRI-derived biomarkers were integrated...
September 13, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28937066/relationship-of-insulin-resistance-to-vitamin-d-status-in-children-with-nondiabetic-chronic-kidney-disease
#20
Seçil Conkar, Sevgi Mir
Insulin Resistance is common in patients with mild-to-moderate stage chronic kidney disease (CKD), even when the glomerular filtration rate is within the normal range. This study aimed to investigate the association of IR and 25-hydroxyvitamin D levels. In this study, we evaluated the frequency of IR in predialysis patients and the association with 25-hydroxyvitamin (OH)D levels. A total of 32 non-diabetic patients with predialysis were included in the study. Homeostasis model assessment for insulin resistance (HOMA-IR) index was calculated to show presence of IR...
September 2017: Saudi Journal of Kidney Diseases and Transplantation
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