scholarly journals Agricultural Export, Growth and the Poor in Africa: A Meta Analysis

2021 ◽  
Author(s):  
David Adeabah ◽  
Simplice Asongu
Author(s):  
Timotius Ivan Hariyanto ◽  
Nata Pratama Hardjo Lugito ◽  
Theo Audi Yanto ◽  
Jeremia Immanuel Siregar ◽  
Andree Kurniawan

Background: Currently, the relationship between insulin therapy and COVID-19 outcome is not yet established. Our study aims to evaluate the possible association between insulin and the poor composite development of COVID-19. Methods: We systematically searched the PubMed and Europe PMC database using specific keywords related to our aims until December 12th, 2020. All articles published on COVID-19 and insulin were retrieved. Statistical analysis was done using Review Manager 5.4 and Comprehensive Meta-Analysis version 3 software. Results: Our pooled analysis showed that insulin use was associated with poor composite development of COVID-19 [OR 2.06 (95% CI 1.70 – 2.48), p < 0.00001, I2 = 83%, random-effect modelling], and its subgroup which comprised of risk of COVID-19 [OR 1.70 (95% CI 1.40 – 2.08), p < 0.00001, I2 = 34%, random-effect modelling], severe COVID-19 [OR 2.30 (95% CI 1.60 – 3.30), p < 0.00001, I2 = 88%, random-effect modelling], and mortality [OR 2.14 (95% CI 1.47 – 3.10), p < 0.0001, I2 = 85%, random-effect modelling]. Meta-regression showed that the association was influenced by age (p = 0.008), but not by diabetes (p = 0.423), and cardiovascular disease (p = 0.086). Conclusion: Physicians should be more aware and take extra precautions with diabetes patients who use insulin therapy.


2021 ◽  
Author(s):  
Hika Wana ◽  
Gezahang Kudhama ◽  
Bona Tadesse

Abstract The aim of this article is attempting to investigate in some sub-Saharan Africa risk due to COVID-19 and its impact on the livelihood of the poor based on an eyewitness, firsthand information and reports and Asses the tradeoff between the slogan of “stay at home” and the daily activity of the poor in the Africa. Subject and Methods: The article was used both systematic and empirical analysis approach to get brief idea on the COVI-19 and the Livelihood of the poor in the continent. The study looks highly about COVID-19 and economic contraction and political instability in the continent. The poor lose again, fiscal risk, export reduction, domestic violence and remittance lock are the main portion were clearly reviewed in this review article. Results: The article revealed that from all classes of people, the poor become poorest and livelihood of the marginalized people become critical question. Consequently, unemployment, inflation and income inequality are aggravated as pandemic arise in Africa. Most of oil exporting country like Nigeria, agricultural export country like Ethiopia, Kenya and Ivory coast are getting worse due to lock down. Conclusion: Slowing economic growth will undermine the ability of governments to provide basic public services in the medium term. The reputation of the security forces will further deteriorate as they struggle to enforce lockdowns with limited resources and discipline. Finally, the author suggest that Africa should follow FIDH and WB to arise from these ashes of destruction.


2019 ◽  
Author(s):  
Sen Wang ◽  
Jia Wu ◽  
Junjun Wang

Abstract Background: Indoleamine 2,3-dioxygenase (IDO) is a rate-limiting enzyme in the metabolism of tryptophan into kynurenine. It is considered to be an immunosuppressive molecule that plays an important role in the development of tumors. However, the relationship between IDO and solid tumor prognosis remains unclear. Herein, we retrieved relevant published literature and analyzed the relationship between IDO expression and prognosis in solid tumors.Methods: Studies related to IDO expression and tumor prognosis were retrieved using PMC, EMbase and web of science database. Overall survival (OS) and other data in each study were extracted. Hazard ratio (HR) was used for analysis and calculation, while heterogeneity and publication bias between studies were also analyzed.Results: A total of 29 studies were included in this meta-analysis. Overall, high expression of IDO was significantly associated with poor OS (HR 1.98, 95% CI 1.55–2.53) and TTP (HR 2.25 95% CI 1.58–3.22). Subgroup analysis suggested that the associations between IDO expression and poor OS were significant in the prospective studies without obvious heterogeneity.Conclusions: The high expression of IDO was significantly associated with the poor prognosis of solid tumors, suggesting that it can be used as a biomarker for tumor prognosis and as a potential target for tumor therapy.


1999 ◽  
Vol 4 (2) ◽  
pp. 75-82 ◽  
Author(s):  
Gerhard Andersson

The critique against significance testing has been increasingly acknowledged in recent years. This paper focuses on the relation between meta-analysis and this controversy. A contradiction in the literature can be seen in that significance testing has been blamed for the poor accumulation of knowledge in psychology, while at the same time meta-analytic reviews have claimed the opposite. Although a majority of meta-analytic experts argue against significance testing, this critique cannot account for the success of meta-analysis. Rather, it may be that meta-analysis has facilitated the recognition of the significance test critique. Taking the significance testing critique seriously has important implications for meta-analysis in that its research base (e. g., studies) is viewed as unreliable. Although the significance test controversy may lead to further fragmentation of psychology, it is not clear that this will negatively affect the practice of meta-analysis.


PLoS ONE ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. e0174809 ◽  
Author(s):  
Peipei Xu ◽  
Xu Liu ◽  
Jian Ouyang ◽  
Bing Chen

2016 ◽  
Vol 12 (34) ◽  
pp. 195 ◽  
Author(s):  
Xolisiwe Yolanda Potelwa ◽  
Moses Herbert Lubinga ◽  
Thandeka Ntshangase

The paper assesses the factors influencing South Africa’s agricultural export growth to its cardinal destinations between 2001 and 2014. A gravity model was used to present investigation of trade flows that has been validated as a suitable tool in determining export growth. The findings indicate that an improvement in South Africa’s and importer’s GDP causes an increase in agricultural exports. Distance and political stability have been shown to have no influence on the growth of agricultural exports to its trading partners. The importer’s population and the export capacity showed a positive relationship on the growth of South Africa’s agricultural exports to its trading partners. Trading agreements, which include AGOA and the TDCA with the EU, show a positive impact on increase in export performance. Therefore, the results suggest that South Africa should focus on countries with a growing population and GDP to improve agricultural export growth and market diversification.


2018 ◽  
Vol 12 (4) ◽  
pp. 403-413 ◽  
Author(s):  
Yi-Tong Wei ◽  
Yu-Zhong Luo ◽  
Zhi-Qiang Feng ◽  
Qiang-Xin Huang ◽  
An-Sheng Mo ◽  
...  

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