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"Publication bias"

Cherian K Kandathil, Emily A Spataro, Katri Laimi, Sami P Moubayed, Sam P Most, Mikhail Saltychev
Importance: While functional rhinoplasty has been broadly studied, to our knowledge no systematic review and meta-analysis of lateral wall repair has been done previously. Objective: To evaluate the effectiveness of repair of the lateral nasal wall in adult patients with nasal airway obstruction. Data Sources: Medline, Embase, Cinahl, Central, Scopus, and Web of Science databases and reference lists were searched for clinical and observational studies...
March 15, 2018: JAMA Facial Plastic Surgery
Ya-Dong Gao, Ya-Wei Qu, Hai-Feng Liu
OBJECTIVE: The accurate diagnosis of undetermined pancreaticobiliary strictures remains challenging. Current ERCP-guided tissue sampling methods are of low sensitivity. Confocal laser endomicroscopy (CLE) is a new procedure and allows real optical biopsies that may improve the diagnosis of undetermined pancreaticobiliary strictures. The aim of this meta-analysis was to determine the diagnostic yield of CLE, tissue sampling, and CLE combined with tissue sampling for undetermined pancreaticobiliary strictures...
March 15, 2018: Scandinavian Journal of Gastroenterology
Toni Rose Jue, Emily S Sena, Malcolm R Macleod, Kerrie L McDonald, Theodore C Hirst
Malignant glioma is a devastating disease affecting both adults and children with limited treatment strategies. Pre-clinical animal studies are critical to the development and planning of novel treatment designs for human clinical trials. Topoisomerases has been a target of interest in the treatment of high grade gliomas, such as glioblastoma, in the past years. Here we assess pre-clinical glioma literature with the aim to identify predictive variables that favour treatment outcomes from topoisomerase inhibition...
February 16, 2018: Oncotarget
Jung-Hoon Lee, Ruda Lee, Moon-Hyon Hwang, Marc T Hamilton, Yoonjung Park
Background: Vascular endothelial dysfunction induced by hyperglycemia and elevated insulin resistance is a potent risk factor for cardiovascular disease and likely contributes to multiple chronic disease complications associated with aging. The aim of this study was to systematically review and quantify the effects of exercise on endothelial function (EF) in type 2 diabetes (T2D). Methods: Five electronic databases were searched (until June 2017) for studies that met the following criteria: (i) randomized controlled trials; (ii) T2D aged ≥ 18 years; (iii) measured EF by brachial artery flow-mediated dilation (FMD); (iv) structured and supervised exercise intervention for ≥ 8 weeks...
2018: Diabetology & Metabolic Syndrome
Matthew J Page, Joanne E McKenzie, Julian P T Higgins
BACKGROUND: Several scales, checklists and domain-based tools for assessing risk of reporting biases exist, but it is unclear how much they vary in content and guidance. We conducted a systematic review of the content and measurement properties of such tools. METHODS: We searched for potentially relevant articles in Ovid MEDLINE, Ovid Embase, Ovid PsycINFO and Google Scholar from inception to February 2017. One author screened all titles, abstracts and full text articles, and collected data on tool characteristics...
March 14, 2018: BMJ Open
Yupeng Wu, Dandan Sun, Bin Wang, Yanfeng Li, Yi Ma
Objectives The relationship of depressive symptoms and subclinical atherosclerosis remains controversial. We performed a systematic review and meta-analysis to evaluate the effect of depressive symptoms on the functional and structural markers of subclinical atherosclerosis as measured by carotid intima-media thickness (IMT), pulse wave velocity (PWV) and flow-mediated vasodilation (FMD). Methods A systematic literature search was performed electronically. Studies relating IMT, PWV or FMD to depressive symptoms were included...
January 1, 2018: European Journal of Preventive Cardiology
Peixia Cheng, Liheng Tan, Peishan Ning, Li Li, Yuyan Gao, Yue Wu, David C Schwebel, Haitao Chu, Huaiqiong Yin, Guoqing Hu
BACKGROUND: Falls are a major threat to older adults worldwide. Although various effective interventions have been developed, their comparative effectiveness remains unreported. METHODS: A systematic review and network meta-analysis was conducted to determine the most effective interventions to prevent falls in community-dwelling adults aged 60 and over. Combined odds ratio (OR) and 95% credible interval (95% CrI) were calculated. RESULTS: A total of 49 trials involving 27,740 participants and 9271 fallers were included...
March 12, 2018: International Journal of Environmental Research and Public Health
Nazila Alinaghi, W Robert Reed
This paper studies the performance of the FAT-PET-PEESE (FPP) procedure, a commonly employed approach for addressing publication bias in the economics and business meta-analysis literature. The FPP procedure is generally used for three purposes: (i) to test whether a sample of estimates suffers from publication bias, (ii) to test whether the estimates indicate that the effect of interest is statistically different from zero, and (iii) to obtain an estimate of the mean true effect. Our findings indicate that the FPP procedure performs well in the basic but unrealistic environment of "fixed effects", where all estimates are assumed to derive from a single population value and sampling error is the only reason for why studies produce different estimates...
March 12, 2018: Research Synthesis Methods
Q Wu, B Liu, S Tonmoy
This meta-analysis pooled results from 23 qualifying individual cohort studies and found that depression was significantly associated with an increased risk of fractures and bone loss. INTRODUCTION: The association between depression and risk of fracture remains controversial. We conducted a comprehensive meta-analysis to examine the effect of depression on the risk of osteoporotic fractures and bone loss. METHODS: We searched databases and reviewed citations in relevant articles for eligible cohort studies...
March 12, 2018: Osteoporosis International
Joshua J Timmons, Kisa Zhang, Johnson Fong, Edwin Lok, Kenneth D Swanson, Shiva Gautam, Eric T Wong
OBJECTIVES: This systematic review aims to investigate spinal cord glioblastoma (scGBM) and correlations between patient traits and survival outcome, as well as differences in cohorts administered temozolomide or total resections, through an analysis of published cases reported up to October 2016. METHODS: We obtained patient data by querying PubMed and Google Scholar with predetermined search terms and inclusion criteria that enabled the identification of relevant case reports...
March 9, 2018: American Journal of Clinical Oncology
Wenyu Lv, Shuangjiang Li, Zhengang Zhao, Yanbiao Liao, Yijian Li, Mao Chen, Yuan Feng
Prior studies have proposed the unfavourable roles of diabetes mellitus (DM) in surgical populations. For patients who underwent transcatheter aortic valve implantation, the prognostic value of DM remains controversial. This review summarizes the effects of DM on short-term, mid-term and long-term prognosis in patients who undergo transcatheter aortic valve implantation. We searched the PubMed database to identify eligible articles. The odds ratio and hazard ratio with the corresponding 95% confidence interval were adopted for synthesizing short-term and medium- to long-term survival outcomes, respectively...
March 8, 2018: Interactive Cardiovascular and Thoracic Surgery
Charat Thongprayoon, Wisit Kaewput, Konika Sharma, Karn Wijarnpreecha, Napat Leeaphorn, Patompong Ungprasert, Ankit Sakhuja, Franco H Cabeza Rivera, Wisit Cheungpasitporn
AIM: To assess outcomes of kidney transplantation including patient and allograft outcomes in recipients with hepatitis B virus (HBV) infection, and the trends of patient's outcomes overtime. METHODS: A literature search was conducted using MEDLINE, EMBASE and Cochrane Database from inception through October 2017. Studies that reported odds ratios (OR) of mortality or renal allograft failure after kidney transplantation in patients with HBV [defined as hepatitis B surface antigen (HBsAg) positive] were included...
February 27, 2018: World Journal of Hepatology
Kazuhiro Nogawa, Noriko Kojimahara
OBJECTIVE: We conducted a systematic review to determine whether work accommodation at the time of return-to-work (RTW) following a period of sick leave would improve work-related outcomes. Using a Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach, we developed recommendations applicable to the field of occupational health in Japan. METHOD: We approached our review question for "Evidence-based Return-to-work Guidance in Occupational Health 2017 (RTW 2017)" using a PICO framework (P: workers on sick leave; I: work accommodation; C: usual care; O: improvement of work-related outcomes, such as shortened sick leave period or lower rate of sick leave recurrence)...
March 12, 2018: Sangyō Eiseigaku Zasshi, Journal of Occupational Health
Mark S Allen, Emma E Walter
BACKGROUND: Sexual dysfunction is a common problem among men and women and is associated with negative individual functioning, relationship difficulties, and lower quality of life. AIM: To determine the magnitude of associations between 6 health-related lifestyle factors (cigarette smoking, alcohol intake, physical activity, diet, caffeine, and cannabis use) and 3 common sexual dysfunctions (erectile dysfunction, premature ejaculation, and female sexual dysfunction)...
March 6, 2018: Journal of Sexual Medicine
Farnaz Shahdadian, Hamed Mohammadi, Mohammad Hossein Rouhani
Type 2 diabetes mellitus (T2DM) is one of the most important public health issues. Vitamin K supplementation might have favorable effect on risk factors of T2DM. The aim of this study was to perform a systematic review and meta-analysis of interventional studies to examine the effect of vitamin K supplementation on glycemic indices. A systematic search was performed in electronic databases including PubMed, Science Direct, ProQuest, Institute of Scientific Information Web of Science, and Google scholar up to July 2017...
March 2018: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
Karn Wijarnpreecha, Wasin Ahuja, Supavit Chesdachai, Charat Thongprayoon, Veeravich Jaruvongvanich, Wisit Cheungpasitporn, Patompong Ungprasert
BACKGROUND: The possible relationship between obesity and the risk of colonic diverticulosis has been suggested by recent epidemiologic studies, although the results were inconsistent. OBJECTIVE: This systematic review and meta-analysis was conducted to summarize all of the available data. DATA SOURCES: A comprehensive literature review was conducted using the MEDLINE and EMBASE databases through January 2017. STUDY SELECTION: Studies that compared the risk of colonic diverticulosis among subjects with obesity versus those without obesity were included...
April 2018: Diseases of the Colon and Rectum
Qian Fei, Xiao-Kang Tian, Jing Wu, Hong-Ming Zhu, Yan Wang, Fan-Yu Peng, Wen-Jun Zhang, Li Yin, Xia He
Extranodal NK/T-cell lymphoma is closely associated with Epstein-Barr virus (EBV) infection. However, the prognostic value of EBV-DNA in extranodal NK/T-cell lymphoma remains unclear. Thus, we conducted a meta-analysis to estimate its prognostic significance. PubMed, EMBASE, and Web of Science were used to search for studies conducted until June 12, 2017. The pooled hazard ratio (HR) and its 95% confidence interval (CI) were calculated to evaluate the prognostic value of pretreatment EBV-DNA on the overall survival of extranodal NK/T-cell lymphoma...
2018: OncoTargets and Therapy
Min Zhang, Min Shi, Yan Zhao
Whether serum copper levels were higher in patients with cervical cancer than that in controls was controversial. Hence, we conducted this study to explore the relationship between serum copper levels and cervical cancer. We searched PubMed, WanFang and China National Knowledge Internet (CNKI) for relevant studies before November 30th, 2017. Standardized mean difference (SMD) and 95% confidence interval (CI) were used to combine results across studies using the random-effect model. A total of 14 publications involving 747 patients with cervical cancer and 1014 controls were eligible through inclusion criteria...
March 8, 2018: Bioscience Reports
Susanna Pallini, Antonio Chirumbolo, Mara Morelli, Roberto Baiocco, Fiorenzo Laghi, Nancy Eisenberg
Secure attachment relationships have been described as having a regulatory function in regard to children's emotions, social cognition, and behavior. Although some theorists and researchers have argued that attachment affects children's self-regulation, most attachment theorists have not strongly emphasized this association. The goal of the current meta-analysis was to determine the magnitude of the relation between attachment security status and effortful control (EC)/top-down self-regulation in children up to 18 years of age...
March 8, 2018: Psychological Bulletin
Zhibin Bai, Yonglin Qin, Guangyu Zhu, Guofeng Zhao, Gang Deng, Jinhe Guo, Shicheng He
Objectives: This study was aimed to evaluate the efficacy and safety of epirubicin applied in transcatheter arterial chemoembolization (TACE) for the treatment of hepatocellular carcinoma (HCC). Materials and Methods: Studies were searched in Embase, PubMed, and Springer until August 10, 2016. All the studies were screened with inclusion and exclusion criteria. The quality assessment of the eligible studies was performed with the Newcastle-Ottawa Scale and the Jadad Scale...
January 2018: Journal of Cancer Research and Therapeutics
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