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Meta analyse

Andrew J Irvine, William D Chey, Alexander C Ford
OBJECTIVES: Celiac disease (CD) and irritable bowel syndrome (IBS) share similar symptoms, leading to confusion between the two and diagnostic delay. International guidelines recommend screening individuals with IBS for CD, via serological testing. However, studies published recently have cast doubt on the utility of this. We updated a previous meta-analysis examining this issue. METHODS: MEDLINE, EMBASE, and EMBASE Classic were searched through to May 2016. Eligible studies recruited adults with IBS according to symptom-based criteria, physician's opinion, or questionnaire data...
October 18, 2016: American Journal of Gastroenterology
Yi Shen, Sheng Zhang, Xulin Wang, Yuanyuan Wang, Jian Zhang, Gang Qin, Wenchao Li, Kun Ding, Lei Zhang, Feng Liang
BACKGROUND: Because whether hepatitis B virus (HBV) infection increases the risk of type 2 diabetes mellitus (T2DM) has been a controversial topic, pair-wise and network meta-analyses of published literature were carried out to accurately evaluate the association between different phases of HBV infection and the risk of T2DM. METHODS: A comprehensive literature retrieval was conducted from the Pubmed, Embase, Cochrane Library, Chinese Database to identify epidemiological studies on the association between HBV infection and the risk of T2DM that were published from 1999 to 2015...
October 18, 2016: Liver International: Official Journal of the International Association for the Study of the Liver
Alexandra S Creighton, Tanya E Davison, David W Kissane
OBJECTIVE: To synthesize and summarize the studies examining the correlates and predictors of anxiety in older adults living in residential aged care. METHODS: Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, five electronic databases were searched using key terms and subject headings, as well as reference lists of relevant papers. The search was limited to peer-reviewed literature published in English. Eligible studies examined the association between at least one correlate/factor and anxiety disorders or symptoms in aged care residents aged 50+ years...
October 17, 2016: International Journal of Geriatric Psychiatry
Tristram A Lett, Henrik Walter, Eva J Brandl
Genetic variation underlies both the response to antidepressant treatment and the occurrence of side effects. Over the past two decades, a number of pharmacogenetic variants, among these the SCL6A4, BDNF, FKBP5, GNB3, GRIK4, and ABCB1 genes, have come to the forefront in this regard. However, small effects sizes, mixed results in independent samples, and conflicting meta-analyses results led to inherent difficulties in the field of pharmacogenetics translating these findings into clinical practice. Nearly all antidepressant pharmacogenetic variants have potentially pleiotropic effects in which they are associated with major depressive disorder, intermediate phenotypes involved in emotional processes, and brain areas affected by antidepressant treatment...
October 17, 2016: CNS Drugs
N Kappelmann, G Lewis, R Dantzer, P B Jones, G M Khandaker
Inflammatory cytokines are commonly elevated in acute depression and are associated with resistance to monoaminergic treatment. To examine the potential role of cytokines in the pathogenesis and treatment of depression, we carried out a systematic review and meta-analysis of antidepressant activity of anti-cytokine treatment using clinical trials of chronic inflammatory conditions where depressive symptoms were measured as a secondary outcome. Systematic search of the PubMed, EMBASE, PsycINFO and Cochrane databases, search of reference lists and conference abstracts, followed by study selection process yielded 20 clinical trials...
October 18, 2016: Molecular Psychiatry
Bruce C Allen, Melissa J Vincent, DeAnn Liska, Lynne T Haber
We conducted a meta-regression of controlled clinical trial data to investigate quantitatively the relationship between dietary intake of industrial trans fatty acids (iTFA) and increased low-density lipoprotein cholesterol (LDL-C). Previous regression analyses included insufficient data to determine the nature of the dose response in the low-dose region and have nonetheless assumed a linear relationship between iTFA intake and LDL-C levels. This work contributes to the previous work by 1) including additional studies examining low-dose intake (identified using an evidence mapping procedure); 2) investigating a range of curve shapes, including both linear and nonlinear models; and 3) using Bayesian meta-regression to combine results across trials...
October 14, 2016: Food and Chemical Toxicology
Bianca Hemmingsen, David Peick Sonne, Maria-Inti Metzendorf, Bernd Richter
BACKGROUND: The projected rise in the incidence of type 2 diabetes mellitus (T2DM) could develop into a substantial health problem worldwide. Whether insulin secretagogues (sulphonylureas and meglitinide analogues) are able to prevent or delay T2DM and its associated complications in people at risk for the development of T2DM is unknown. OBJECTIVES: To assess the effects of insulin secretagogues on the prevention or delay of T2DM and its associated complications in people with impaired glucose tolerance, impaired fasting blood glucose, moderately elevated glycosylated haemoglobin A1c (HbA1c) or any combination of these...
October 17, 2016: Cochrane Database of Systematic Reviews
Sarah Batson, Hannah Burton
AIMS: Meta-analysis is of critical importance to decision makers to assess the comparative efficacy and safety of interventions and is integral to health technology assessment. A major problem for the meta-analysis of continuous outcomes is that associated variance data are not consistently reported in trial publications. The omission of studies from a meta-analysis due to incomplete reporting may introduce bias. The objectives of this study are to summarise and describe the methods used for handling missing variance data in meta-analyses in populations with type 2 diabetes mellitus (T2DM)...
2016: PloS One
Dazhi Fan, Song Wu, Wen Wang, Lihong Xin, Guo Tian, Li Liu, Jinping Feng, Xiaoling Guo, Zhengping Liu
BACKGROUND: Placenta previa is characterized by the abnormal placenta overlying the endocervical os, and it is known as one of the most feared adverse maternal and fetal-neonatal complications in obstetrics. OBJECTIVES: We aimed to obtain overall and regional estimates of placenta previa prevalence among deliveries in Mainland China. METHODS: The research was performed a systematic review, following the Meta-analysis of observational studies in epidemiology (MOOSE) guidelines for systematic reviews of observational studies, and the preferred reporting items for systematic reviews and meta-analysis (PRISMA) statement for reporting systematic reviews and meta-analysis...
October 2016: Medicine (Baltimore)
Ahmer M Hameed, Henry C Pleass, Germaine Wong, Wayne J Hawthorne
BACKGROUND: The two main options for renal allograft preservation are static cold storage (CS) and machine perfusion (MP). There has been considerably increased interest in MP preservation of kidneys, however conflicting evidence regarding its efficacy and associated costs have impacted its scale of clinical uptake. Additionally, there is no clear consensus regarding oxygenation, and hypo- or normothermia, in conjunction with MP, and its mechanisms of action are also debated. The primary aims of this article were to elucidate the benefits of MP preservation with and without oxygenation, and/or under normothermic conditions, when compared with CS prior to deceased donor kidney transplantation...
October 2016: Medicine (Baltimore)
Xiang Kong, Yan Kong, Fangyuan Zhang, Tingting Wang, Jin Yan
BACKGROUND: Intrahepatic cholestasis of pregnancy (ICP) is a specific pregnancy-related disorder without standard medical therapies. Ursodeoxycholic acid (UDCA) is the most used medicine, but the efficacy and safety of UDCA remain uncertain. Several meta-analyses had been made to assess the effects of UDCA in ICP. However, the samples were not large enough to convince obstetricians to use UDCA. We conducted a meta-analysis to evaluate the effects and safety of UDCA in patients with ICP, which included only randomized controlled trials (RCTs)...
October 2016: Medicine (Baltimore)
Fanbo Meng, Wei Wang, Jianghong Ma, Baisong Lin
Inconsistent findings have been reported on the association between the parathyroid hormone (PTH) level and risk of heart failure. We aimed to systematically evaluate the association between circulating level of PTH and risk of heart failure in the general population by conducting a meta-analysis. We made a comprehensive literature search in PubMed, Embase, VIP, CNKI, and Wanfang databases published until January 2016. Only prospective observational studies reporting the association between circulating level of PTH and risk of heart failure in the general population were selected...
October 2016: Medicine (Baltimore)
Hong-Bo Li, Xu-Hui Tai, Yue-Hong Sang, Jian-Ping Jia, Zhen-Ming Xu, Xiao-Feng Cui, Song Dai
BACKGROUND: Nutrients related to serum vitamin D level were previously shown to be significantly associated with the risk of many chronic diseases. This study aimed to assess potential relationships between serum vitamin D level and otitis media (OM) risk. METHODS: PubMed, EMBASE, and Cochrane Library databases were searched till Aug 18, 2015 for studies of quantitative OM risk estimates in relation to serum vitamin D level. The odds ratio and weighted mean difference, with 95% confidence intervals (CIs), were used to measure the relationship between serum vitamin D level and OM risk...
October 2016: Medicine (Baltimore)
Paolo Boffetta, Simona Catalani, Cesare Tomasi, Enrico Pira, Pietro Apostoli
The aim of this study was to carry out a meta-analysis of studies on exposure to polychlorinated biphenyls (PCBs) and the risk of malignant melanoma (MM). We searched Scopus, PubMed, and reference lists; among 807 potentially relevant articles, we selected those based on 12 populations. Data were extracted according to a standardized form; the Newcastle-Ottawa Scale was used to assess study quality. Meta-analyses were carried out according to fixed-effect and random-effects models. The fixed-effect summary relative risk (RR) for MM was 0...
October 5, 2016: European Journal of Cancer Prevention
Stephen A Smith, Derek J Roberts, Mark E Lipson, W Donald Buie, Anthony R MacLean
BACKGROUND: Nonsteroidal anti-inflammatory drugs are commonly used analgesics in colorectal surgery. Controversy exists regarding the potential association between these drugs and anastomotic dehiscence. OBJECTIVE: This study aimed to determine whether postoperative nonsteroidal anti-inflammatory drug use is associated with intestinal anastomotic dehiscence. DATA SOURCES: PubMed, EMBASE, CENTRAL, and references of included articles were searched without date or language restriction...
November 2016: Diseases of the Colon and Rectum
Mei Jiang, Feifeng Ren, Yaning Zheng, Ruyu Yan, Wenhan Huang, Ning Xia, Lei Luo, Jun Zhou, Lin Tang
OBJECTIVES: To evaluate the efficacy and safety of down-titration (dose reduction/tapering) strategies compared with continuation of biological disease-modifying anti-rheumatic drugs (DMARDs) in patients with rheumatoid arthritis (RA) who achieved and maintained low disease activity or remission. METHODS: We searched the following electronic database up to March 2016: MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials (CENTRAL), and conference proceedings of the American College of Rheumatology (ACR) and European League against Rheumatism (EULAR)...
September 7, 2016: Clinical and Experimental Rheumatology
Laura Deckx, An Im De Sutter, Linda Guo, Nabiel A Mir, Mieke L van Driel
BACKGROUND: Many treatments for the common cold exist and are sold over-the-counter. Nevertheless, evidence on the effectiveness and safety of nasal decongestants is limited. OBJECTIVES: To assess the efficacy, and short- and long-term safety, of nasal decongestants used in monotherapy to alleviate symptoms of the common cold in adults and children. SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL, Issue 6, June 2016), which contains the Cochrane Acute Respiratory Infections (ARI) Specialised Register, MEDLINE (1946 to July 2016), Embase (2010 to 15 July 2016), CINAHL (1981 to 15 July 2016), LILACS (1982 to July 2016), Web of Science (1955 to July 2016) and clinical trials registers...
October 17, 2016: Cochrane Database of Systematic Reviews
Ao Zhang, Shiji Wang, Hongxiang Li, Juan Yang, Hui Wu
Studies on aortic arch calcification (AAC) and mortality risk in maintenance dialysis patients have yielded conflicting findings. We conducted this meta-analysis to investigate the association between the presence of AAC and cardiovascular or all-cause and mortality risk in maintenance dialysis patients. Observational studies evaluating baseline AAC and cardiovascular or all-cause mortality risk in maintenance dialysis patients were searched through the PubMed and Embase, CNKI, VIP and Wanfang databases until January 2016...
October 17, 2016: Scientific Reports
Jing-Yi Li, Li-Li Zheng, Ting-Ting Wang, Min Hu
BACKGROUND: Melanoma is a type of cancer that develops from the pigment-containing cells. Until now, its pathological mechanisms remain largely unknown. The aim of this study was to identify metastasis-related microRNA (miRNAs) and gain an understanding of the biological functions in the metastasis of melanoma. METHODS: We searched the PubMed and Gene Expression Omnibus database to collect miRNA expression profiling datasets about melanoma, with key words of "melanoma", "miRNA", "microarray", and "gene expression profiling"...
2016: Chinese Medical Journal
Lukas Schwingshackl, Georg Hoffmann, Benjamin Missbach, Marta Stelmach-Mardas, Heiner Boeing
BACKGROUND: Nuts have been an indispensable component of the human diet for hundreds because of their unique nutrient composition and are thought to play a beneficial part in the prevention of cardiovascular diseases. OBJECTIVE: To evaluate the extent, validity and presence of evidence for studies investigating the impact of nuts intake on biomarkers of cardiovascular disease and cardiovascular events, we performed an umbrella review of all published meta-analyses synthesizing data from both observational studies and randomized controlled trials...
October 10, 2016: Current Pharmaceutical Design
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