scholarly journals A meta-analysis of copper level and risk of preeclampsia: evidence from 12 publications

2016 ◽  
Vol 36 (4) ◽  
Author(s):  
Yuqin Fan ◽  
Yan Kang ◽  
Min Zhang
Keyword(s):  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Asian Population ◽  
Epidemiological Studies ◽  
Copper Level ◽  
Case Control Studies ◽  
Cross Sectional ◽  
Healthy Pregnancy ◽  
Risk Of Preeclampsia

The association between copper level and risk of preeclampsia (PE) has produced inconsistent results. Thus, a meta-analysis was conducted to summarize the evidence from epidemiological studies for copper level and PE risk. Pertinent studies were identified by a search of PubMed and Web of Knowledge up to April 2016. Standardized mean difference (SMD) was performed to combine the results. Random-effect model (REM) was used. Publication bias was estimated using Egger's regression asymmetry test. Twelve articles (10 case–control studies and 2 cross-sectional studies) involving 442 PE cases and 463 health controls were included in this meta-analysis. Our pooled results suggested that PE patients had a higher copper level compared with healthy pregnancy controls [summary SMD=0.69, 95% CI: 0.54–0.84, I2=96.7%; P<0.001]. The association was also significant in Asian population [SMD=0.73, 95% CI=0.57–0.90, I2=97.3%] and European populations [SMD=0.50, 95% CI=0.14–0.86, I2=58.9%]. After conducting the subgroup analysis and sensitive analysis, the results showed consistent significant association with the one based on all studies. No publication biases were found. Our analysis indicated that plasma or serum copper level in PE patients was significantly higher than that in healthy pregnancy women.

scholarly journals Association between selenium intake and the risk of pancreatic cancer: a meta-analysis of observational studies

2016 ◽  
Vol 36 (5) ◽  
Author(s):  
Lei Wang ◽  
Jianfeng Wang ◽  
Xudong Liu ◽  
Qian Liu ◽  
Guozhuan Zhang ◽  
...  
Keyword(s):  
Pancreatic Cancer ◽  
Publication Bias ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Epidemiological Studies ◽  
Case Control Studies ◽  
Selenium Intake ◽  
Effect Model ◽  
Summary Relative Risk

Quantification of the association between the intake of selenium and risk of pancreatic cancer is still conflicting. Thus, we conducted a meta-analysis to summarize the evidence from epidemiological studies of selenium intake with the risk of pancreatic cancer. Pertinent studies were identified by a search of PubMed and Web of Knowledge to July 2016. The random-effect model was used. Sensitivity analysis and publication bias were conducted. Data from six studies including 1424 pancreatic cancer cases were used in this meta-analysis. Pooled results suggested that highest selenium intake amount compared with lowest amount was significantly associated with the risk of pancreatic cancer [summary relative risk (RR)=0.659, 95% confidence interval (CI)=0.489–0.889, I2=47.6%]. The associations were significant both in case–control studies [RR=0.618, 95%CI=0.399–0.956, I2=59.1%] and Americas [RR=0.570, 95%CI=0.357–0.909, I2=65.6%]. No publication bias was found. Our analysis suggested that the higher intake of selenium might reduce the risk of pancreatic cancer.

scholarly journals Non-prescription dispensing of antibiotic agents among community drug retail outlets in Sub-Saharan African countries: a systematic review and meta-analysis

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Sewunet Admasu Belachew ◽  
Lisa Hall ◽  
Linda A. Selvey
Keyword(s):  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Acute Diarrhoea ◽  
Upper Respiratory Tract ◽  
Cross Sectional ◽  
Retail Outlets ◽  
Sub Saharan ◽  
Tract Infections ◽  
Ssa Countries

Abstract Background The development of antimicrobial resistance, which is partially attributable to the overuse and/or misuse of antibiotics in health care, is one of the greatest global public health challenges. In Sub-Saharan African (SSA) countries, non-prescribed dispensing of antibiotics in community drug retail outlets (CDROs) has been flagged as one of the contributing factors for the widespread misuse of antibiotics in the community. Objective The current review aimed to estimate the proportion of non-prescription antibiotics requests or consultations that resulted in provision of antibiotics without a valid prescription among CDROs in SSA region, and describe the type of antibiotics dispensed. Methods A literature search was conducted using PubMed, CINAHL, Scopus and Google Scholar. We also searched reference lists of relevant articles. Random effect model meta-analysis was employed to determine the pooled proportion of over the counter sale of antibiotics. Subgroup and meta-regression was undertaken to explore the potential cause of heterogeneity in effect size across studies. Results Of 671 total citations retrieved, 23 met the inclusion criteria (seven cross-sectional questionnaire-based surveys and 16 cross-sectional client-based studies). The overall pooled proportion of non-prescription antibiotics requests or consultations that resulted in supply of antibiotics without prescription was 69% (95% CI 58–80). Upper respiratory tract infections and/or acute diarrhoea were the most frequently presented case scenarios, and amoxicillin and co-trimoxazole were the most frequently dispensed antibiotics to treat those symptoms. Conclusions Non-prescribed dispensing of antibiotics was found to be a common practice among CDROs in several SSA countries. Ease of access to and overuse of antibiotics can potentially accelerate the emergence of resistance to antibiotics available in the region. Our review highlights the need for a stringent enforcement of existing policies and/or enacting new regulatory frameworks that would regulate antibiotic supply, and training and educational support for pharmacy personnel (e.g. pharmacists, pharmacy assistants) regarding judicious use of antibiotics and the importance of antimicrobial stewardship.

scholarly journals Meta-analysis: Assocation between promoter hypermethylation of DAPK (Death-Associated Protein Kinase) and cervical cancer

2020 ◽  
Vol 9 (1) ◽  
pp. 41-50
Author(s):  
Lao Duc Thuan ◽  
Truong Kim Phuong
Keyword(s):  
Cervical Cancer ◽  
Protein Kinase ◽  
Promoter Methylation ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Promoter Hypermethylation ◽  
Aberrant Methylation ◽  
Case Control Studies ◽  
Death Associated Protein Kinase

Purpose: Death-associated protein kinase (DAPK or DAPK1) is an important tumor suppressor protein that involved in the regulation of cell activities. The aberrant methylation of DAPK promoter has been reported in patients with cervical cancer. However, the association between of DAPK1 and cervical cancer was not always unification, in previous studies. Therefore, in current study, a meta-analysis was performed for association of between DAPK gene’s promoter hypermethylated and cervical cancer. Methods: A systematic literature analysis was conducted based on the previous studies published in PubMed, PubMed Central (NCBI), Google by using following keywords: cervical cancer, cervical carcinoma, Methylation, by the end of January, 2018. The association between DAPK promoter methylation and cervical cancer was evaluated by odds ratio (ORs) and 95% confidence intervals (CI). To evaluate the potential sources of heterogeneity, the meta-regression analysis and subgroup analysis were conducted. Results: A total of 21 case-control studies which relevant to the association between DAPK1 gene’s promoter methylation frequency and cervical cancer, that including 1600 cancer cases and 1011 control cases (non-cancerous cases). The analysis results indicated that the characteristic of candidate gene’s promoter methylation increased the cervical cancer risk through the calculation of OR value (OR = 21.25; 95% CI = 8.73 – 52.97; p < 0.001; Random effect model). The association between DAPK1 gene’s promoter hypermethylation was confirmed in all the subgroups analyses, including materials and assays methods, ethnicity. Furthermore, this association is higher in cervical squamous cell carcinoma than cervical adenocarcinoma and is a characteristic of late-stage disease. Conclusion: The hypermethylated DAPK1 gene’s promoter was also one of etiological factor, lead to the cervical tumorigenesis.

scholarly journals The Correlation of Glycemic Index, Glycemic Load, and Carbohydrates with the Risk of Hepatocellular Carcinoma: A Systematic Review and Meta-Analysis

2021 ◽  
Author(s):  
Long-Shan Yang ◽  
Guang-Xiao Meng ◽  
Zi-Niu Ding ◽  
Lun-Jie Yan ◽  
Sheng-Yu Yao ◽  
...  
Keyword(s):  
Hepatocellular Carcinoma ◽  
Glycemic Index ◽  
Hepatitis Virus ◽  
Meta Analysis ◽  
Glycemic Load ◽  
Random Effect ◽  
Random Effect Model ◽  
Fixed Effect Model ◽  
Case Control Studies ◽  
Effect Model

Abstract Background Glycemic index (GI), glycemic load (GL), and carbohydrates have been shown to be associated with a variety of cancers, but their correlation with hepatocellular carcinoma (HCC) remains controversial. The purpose of our study was to investigate the correlation of GI, GL and carbohydrate with risk of HCC.Methods Systematic searches were conducted in PubMed, Embase and Web of Science until November 2020. According to the size of heterogeneity, the random effect model or the fixed effect model was performed to calculate the pooled relative risks (RRs) and 95% confidence intervals (CIs) for the correlation of GI, GL, and carbohydrates with the risk of HCC.Results Seven cohort studies involving 1,193,523 participants and 1,004 cases, and 3 case-control studies involving 827 cases and 5,502 controls were eventually included. The pooled results showed no significant correlation of GI (RR=1.11, 95%CI 0.80-1.53, I2= 62.2%), GL (RR=1.09, 95%CI 0.76-1.55, I2 = 66%), and carbohydrate (RR=1.09, 95%CI 0.84-1.32, I2=0%) with the risk of HCC in general population. Subgroup analysis revealed that in hepatitis B virus (HBV) or/and hepatitis C virus (HCV)-positive group, GI was not correlated with the risk of HCC (RR=0.65, 95%CI 0.32-1.32, p=0.475, I2=0.0%), while GL was significantly correlated with the risk of HCC (RR=1.52, 95%CI 1.04-2.23, p=0.016, I2=70.9%). In contrast, in HBV and HCV-negative group, both GI (RR=1.23, 95%CI 0.88-1.70, p=0.222, I2=33.6%) and GL (RR=1.17, 95% CI 0.83-1.64, p=0.648, I2=0%) were not correlated with the risk of HCC. Conclusion A high GL diet is correlated with a higher risk of HCC in people with hepatitis virus. A low GL diet may be recommended for patients with viral hepatitis to reduce the risk of HCC.

scholarly journals ASSOCIATION OF IL-8 -251T>A (RS4073) POLYMORPHISM WITH SUSCEPTIBILITY TO GASTRIC CANCER: A SYSTEMATIC REVIEW AND META-ANALYSIS BASED ON 33 CASE-CONTROL STUDIES

2020 ◽  
Vol 57 (1) ◽  
pp. 91-99
Author(s):  
Mansour MOGHIMI ◽  
Seyed Alireza DASTGHEIB ◽  
Naeimeh HEIRANIZADEH ◽  
Mohammad ZARE ◽  
Elnaz SHEIKHPOUR ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Case Control ◽  
Case Control Studies ◽  
Effect Model ◽  
Increased Risk ◽  
Mixed Populations ◽  
Stratified Analysis

ABSTRACT BACKGROUND: The role of -251A>T polymorphism in the anti-inflammatory cytokine interleukin-8 (IL-8) gene in gastric cancer was intensively evaluated, but the results of these studies were inconsistent. OBJECTIVE: Therefore, we performed a meta-analysis to provide a comprehensive data on the association of IL-8 -251T>A polymorphism with gastric cancer. METHODS: All eligible studies were identified in PubMed, Web of Science, EMBASE, Wanfang and CNKI databases before September 01, 2019. The pooled odds ratios (ORs) with 95% confidence intervals (CIs) were derived from a fixed effect or random effect model. RESULTS: A total of 33 case-control studies with 6,192 cases and 9,567 controls were selected. Overall, pooled data showed that IL-8 -251T>A polymorphism was significantly associated with an increased risk of gastric cancer under all five genetic models, i.e., allele (A vs T: OR=1.189, 95% CI 1.027-1.378, P=0.021), homozygote (AA vs TT: OR=1.307, 95% CI 1.111-1.536, P=0.001), heterozygote (AT vs TT: OR=1.188, 95% CI 1.061-1.330, P=0.003), dominant (AA+AT vs TT: OR=1.337, 95% CI 1.115-1.602, P=0.002) and recessive (AA vs AT+TT: OR=1.241, 95% CI 1.045-1.474, P=0.014). The stratified analysis by ethnicity revealed an increased risk of gastric cancer in Asians and mixed populations, but not in Caucasians. Moreover, stratified by country found a significant association in Chinese, Korean and Brazilian, but not among Japanese. CONCLUSION: This meta-analysis suggests that the IL-8 -251T>A polymorphism is associated with an increased risk of gastric cancer, especially by ethnicity (Asian and mixed populations) and country (Chinese, Korean and Brazilian).

Association Between Prediabetes and Retinopathy: A Meta-Analysis

2021 ◽  
Vol 53 (12) ◽  
pp. 801-809
Author(s):  
Ji Jin ◽  
Peirong Lu
Keyword(s):  
Meta Analysis ◽  
Microvascular Complications ◽  
Random Effect ◽  
Random Effect Model ◽  
Community Dwelling ◽  
Current Evidence ◽  
Cross Sectional ◽  
Increased Risk ◽  
Study Heterogeneity ◽  
Study Characteristics

AbstractDiabetes confers an increased risk of microvascular complications, including retinopathy. However, whether prediabetes is also related to retinopathy has not been comprehensively examined. We performed a meta-analysis to evaluate the relationship between prediabetes and retinopathy. This meta-analysis included relevant observational studies from Medline, Embase, and Web of Science databases. A random-effect model after incorporation of the intra-study heterogeneity was selected to pool the results. Subgroup analyses were applied to evaluate the influences of study characteristics on relationship. Nine cross-sectional studies including 14 751 community dwelling adult participants were included; 3847 (26.1%) of them were prediabetic. Results showed that prediabetes was associated with a higher prevalence of retinopathy compared to normoglycemia [odds ratio (OR): 1.55, 95% confidence interval (CI): 1.10–2.20, p=0.01, I2=34%]. Sensitivity analysis by excluding one study at a time showed consistent result (OR: 1.35 to 1.73, p all<0.05). Subgroup analysis showed study characteristics such as definition of prediabetes, country of study, sample size, mean age of participants, or univariate or multivariate analyses may not significantly affect the association (p for subgroup difference all>0.05). Current evidence suggests that patients with prediabetes may be associated with higher prevalence of retinopathy as compared to those with normoglycemia. Although prospective cohort studies are needed to validate these findings, results of our meta-analysis highlighted the importance of early prevention of retinopathy in patients with prediabetes.

scholarly journals Cyp2C19*2 Polymorphism Related to Clopidogrel Resistance in Patients With Coronary Heart Disease, Especially in the Asian Population: A Systematic Review and Meta-Analysis

2020 ◽  
Vol 11 ◽  
Author(s):  
Ying Sun ◽  
Qing Lu ◽  
Xuefei Tao ◽  
Biao Cheng ◽  
Guoxing Yang
Keyword(s):  
Gene Polymorphism ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Asian Population ◽  
Fixed Effect Model ◽  
Clopidogrel Resistance ◽  
Effect Model ◽  
The Relationship ◽  
Allele Model

In recent years, the relationship between Cyp2C19*2 gene polymorphism and clopidogrel resistance reflected by platelet function assay has been studied extensively, but there is no clear conclusion yet. In order to evaluate the relationship between Cyp2C19*2 gene polymorphism and clopidogrel resistance more accurately, meta-analysis was conducted in this study. The I2 value taking 50% as the limit, the heterogeneity is judged as high or low, and then a random effect model or a fixed effect model is selected for statistical analysis. PubMed, EMBASE, Web of Science, CNKI, and China Wanfang database were searched, and the related literatures from the establishment of the database to May 2020 were collected and analyzed by STATA 15.0 software. A total of 3,073 patients were involved in 12 studies, including 1,174 patients with clopidogrel resistance and 1,899 patients with non-clopidogrel resistance. The results of this study showed that allele model (A vs. G): OR = 2.42 (95%CI: 1.97–2.98); dominant model (AA+GA vs. GG): OR = 2.74 (95%CI: 2.09–3.59); recessive model (AA vs. GA+GG): OR = 4.07 (95%CI: 3.06–5.41); homozygous model (AA vs. GG): OR = 5.70 (95%CI: 4.22–7.71); heterozygote model (GA vs. GG): OR = 2.32 (95%CI: 1.76–3.07), the differences were statistically significant. Also, the analysis of the Ethnicity subgroup indicated that the Asian allele model and the other four gene models were statistically significant. In conclusion, Cyp2C19*2 gene polymorphism is strongly associated with clopidogrel resistance. Allele A, genotype GA, AA, and GG + GA can increase clopidogrel resistance, especially in the Asian population.

scholarly journals The Associations between VEGF Gene Polymorphisms and Diabetic Retinopathy Susceptibility: A Meta-Analysis of 11 Case-Control Studies

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Liyuan Han ◽  
Lina Zhang ◽  
Wenhua Xing ◽  
Renjie Zhuo ◽  
XiaLu Lin ◽  
...  
Keyword(s):  
Diabetic Retinopathy ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Recessive Model ◽  
Cochrane Library ◽  
Published Data ◽  
Case Control Studies ◽  
Asian Populations ◽  
Effect Model

Aims. Published data on the associations of VEGF polymorphisms with diabetic retinopathy (DR) susceptibility are inconclusive. A systematic meta-analysis was undertaken to clarify this topic.Methods. Data were collected from the following electronic databases: PubMed, Embase, OVID, Web of Science, Elsevier Science Direct, Excerpta Medica Database (EMBASE), and Cochrane Library with the last report up to January 10, 2014. ORs and 95% CIs were calculated for VEGF–2578C/A (rs699947), –1154G/A (rs1570360), –460T/C (rs833061), −634G>C (rs2010963), and +936C/T (rs3025039) in at least two published studies. Meta-analysis was performed in a fixed/random effect model by using the software STATA 12.0.Results. A total of 11 studies fulfilling the inclusion criteria were included in this meta-analysis. A significant relationship between VEGF+936C/T (rs3025039) polymorphism and DR was found in a recessive model (OR = 3.19, 95% CI = 1.20–8.41, andP(z)=0.01) in Asian and overall populations, while a significant association was also found between –460T/C (rs833061) polymorphism and DR risk under a recessive model (OR = 2.12, 95% CI = 1.12–4.01, andP(z)=0.02).Conclusions. Our meta-analysis demonstrates that +936C/T (rs3025039) is likely to be associated with susceptibility to DR in Asian populations, and the recessive model of –460T/C (rs833061) is associated with elevated DR susceptibility.

scholarly journals Effect of HIV Infection on Mortality in Patients with Tuberculosis in Asia: A Meta-Analysis

2020 ◽  
Author(s):  
Liza Laela Abida ◽  
◽  
Bhisma Murti ◽  
Hanung Prasetya ◽  
◽  
...  
Keyword(s):  
Hiv Infection ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
Cross Sectional Study ◽  
People Living With Hiv ◽  
Cross Sectional ◽  
Risk Of Mortality ◽  
Hiv Mortality ◽  
Keywords Hiv

ABSTRACT Background: TB/HIV coinfectioned remains the leading cause of mortality among people living with HIV (PLHIV). The purpose of this study was to explore the effect of HIV infection on mortality in patients with tuberculosis in Asia. Subjects and Method: This was meta-analysis and systematic review. The study was conducted by collecting published studies from Google Scholar, PubMed, Springer Link, Hindawi, Clinical Key, and ProQuest databases, from 2010 to 2020. Keywords used “HIV” AND “mortality” OR “HIV Mortality” OR “Tuberculosis Mortality” AND “cross sectional” AND “adjusted odd ratio”. The inclusion criteria were full text, using English or Indonesian language, using cross-sectional study design, and reporting adjusted odds ratio. The articles were selected by PRISMA flow chart. The quantitative data were analyzed using random effect model run on Review Manager 5.3. Results: 5 studies in Asia (Thailand, China, Malaysia, and Oman) were included for this study. Meta analysis study reported that HIV elevated the risk of mortality in patients with tuberculosis (aOR= 3.45; 95% CI= 1.14 to 10.45; p = 0.030). Conclusion: HIV elevates the risk of mortality in patients with tuberculosis. Keywords: HIV, mortality, Tuberculosis Correspondence: Liza Laela Abida. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java. Email: [email protected]. Mobile: 085640115633. DOI: https://doi.org/10.26911/the7thicph.01.52

scholarly journals Effect of Secondary Education on Exclusive Breastfeeding: Meta-Analysis

2020 ◽  
Author(s):  
Ferda Fibi Tyas Nurkholifa ◽  
◽  
Eti Poncorini Pamungkasari ◽  
Hanung Prasetya ◽  
◽  
...  
Keyword(s):  
Secondary Education ◽  
Exclusive Breastfeeding ◽  
Meta Analysis ◽  
Random Effect ◽  
Random Effect Model ◽  
South Australia ◽  
Inclusion Criteria ◽  
Or Education ◽  
Cross Sectional ◽  
Central Java

ABSTRACT Background: Many studies reported the importance of exclusive breastfeeding for infants. However, there are many obstacles faced by lactating mothers to provide exclusive breastfeeding for their children. This study aimed to investigate the effect of secondary education on exclusive breastfeeding using a meta-analysis. Subjects and Method: Meta-analysis and systematic review were conducted by collecting articles from PubMed, Science Direct, and Google Scholar databases. Keywords used exclusive breastfeeding” AND “secondary education” OR “education for breastfeeding” AND “cross sectional” AND “adjusted odd ratio”. The study population was postpartum mothers. Intervention was secondary education with comparison primary education. The study outcome was exclusive breastfeeding. The inclusion criteria were full text, using English or Indonesian language, and reporting adjusted odds ratio. The articles were selected by PRISMA flow chart. The quantitative data were analyzed using random effect model run on Revman 5.3. Results: 7 studies from Peru, China, Nigeria, Korea, Ireland, Sub-Sahara, and South Australia were met the inclusion criteria. There was high heterogeneity between groups (I2= 94%; p<0.001). This study reported that secondary education reduced exclusive breastfeeding, but it was statistically non-significant (aOR= 0.86; 95% CI= 0.60 to 1.24; p= 0.430). Conclusion: Secondary education reduced exclusive breastfeeding, but it was statistically non-significant. Keywords: exclusive breastfeeding, secondary education, postpartum Correspondence: Ferda Fibi Tyas Nurkholifa. Masters Program in Public Health, Universitas Sebelas Maret. Jl. Ir. Sutami 36A, Surakarta 57126, Central Java. Email: [email protected]. Mobile: +6285655778863. DOI: https://doi.org/10.26911/the7thicph.03.131

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