Responses of soil pH to no‐till and the factors affecting it: a global meta‐analysis

2021 ◽  
Author(s):  
Xin Zhao ◽  
Cong He ◽  
Wen‐Sheng Liu ◽  
Wen‐Xuan Liu ◽  
Qiu‐Yue Liu ◽  
...  
Keyword(s):  
Soil Ph ◽  
Meta Analysis ◽  
Factors Affecting ◽  
No Till

scholarly journals Clinical features and outcomes of COVID-19 in older adults: a systematic review and meta-analysis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sunny Singhal ◽  
Pramod Kumar ◽  
Sumitabh Singh ◽  
Srishti Saha ◽  
Aparajit Ballav Dey
Keyword(s):  
Systematic Review ◽  
Older Adults ◽  
Critically Ill ◽  
Clinical Features ◽  
Older Patients ◽  
Clinical Characteristics ◽  
Meta Analysis ◽  
Severe Infection ◽  
Factors Affecting ◽  
Pooled Prevalence

Abstract Background Few studies have focused on exploring the clinical characteristics and outcomes of COVID-19 in older patients. We conducted this systematic review and meta-analysis to have a better understanding of the clinical characteristics of older COVID-19 patients. Methods A systematic search of PubMed and Scopus was performed from December 2019 to May 3rd, 2020. Observational studies including older adults (age ≥ 60 years) with COVID-19 infection and reporting clinical characteristics or outcome were included. Primary outcome was assessing weighted pooled prevalence (WPP) of severity and outcomes. Secondary outcomes were clinical features including comorbidities and need of respiratory support. Result Forty-six studies with 13,624 older patients were included. Severe infection was seen in 51% (95% CI– 36-65%, I2–95%) patients while 22% (95% CI– 16-28%, I2–88%) were critically ill. Overall, 11% (95% CI– 5-21%, I2–98%) patients died. The common comorbidities were hypertension (48, 95% CI– 36-60% I2–92%), diabetes mellitus (22, 95% CI– 13-32%, I2–86%) and cardiovascular disease (19, 95% CI – 11-28%, I2–85%). Common symptoms were fever (83, 95% CI– 66-97%, I2–91%), cough (60, 95% CI– 50-70%, I2–71%) and dyspnoea (42, 95% CI– 19-67%, I2–94%). Overall, 84% (95% CI– 60-100%, I2–81%) required oxygen support and 21% (95% CI– 0-49%, I2–91%) required mechanical ventilation. Majority of studies had medium to high risk of bias and overall quality of evidence was low for all outcomes. Conclusion Approximately half of older patients with COVID-19 have severe infection, one in five are critically ill and one in ten die. More high-quality evidence is needed to study outcomes in this vulnerable patient population and factors affecting these outcomes.

scholarly journals Factors affecting the incidence of postoperative periprosthetic fractures following primary and revision hip arthroplasty: a systematic review and meta-analysis

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Christos Bissias ◽  
Angelos Kaspiris ◽  
Athanasios Kalogeropoulos ◽  
Konstantinos Papoutsis ◽  
Nikolaos Natsioulas ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Risk Factors ◽  
Systematic Review ◽  
Meta Analysis ◽  
Revision Arthroplasty ◽  
Female Gender ◽  
Periprosthetic Fractures ◽  
Factors Affecting ◽  
Potential Risk Factors ◽  
Grade 3

Abstract Objectives The increasing number of hip arthroplasties (HA), due to the growing elderly population, is associated with the risk of femoral periprosthetic fractures (FPFs). The purpose of this study was to identify potential risk factors for the development of FPFs after HA. Methods A systematic review was conducted in five data bases (Medline, Embase, Cochrane, Cinahl, ICTRP) according to the Preferred Reporting Items for Systematic reviews and Meta-analysis (PRISMA) guidelines up to May 2019, using the key words “risk factor,” “periprosthetic fracture,” and “hip replacement or arthroplasty.” Meta-analysis of the clinical outcomes of HA and subgroup analysis based on the factors that were implicated in FPFs was performed. Results Sixteen studies were included (sample size: 599,551 HA patients, 4253 FPFs, incidence 0.71%). Risk factors statistically associated with increased incidence of FPFs were female gender (+ 40%), previous revision arthroplasty surgery (× 3 times), and the presence of rheumatoid arthritis (× 2.1 times), while osteoarthritis (− 57%), cement application (− 59%), and insertion of Biomet (− 68%) or Thompson’s prosthesis (− 75%) were correlated with low prevalence of FPFs. Obesity, cardiac diseases, advanced age, bad general health (ASA grade ≥ 3), and use of Exeter or Lubinus prosthesis were not linked to the appearance of FPFs. Conclusion This meta-analysis suggested that female gender, rheumatoid arthritis, and revision arthroplasty are major risk factors for the development of FPFs after a HA. In those patients, frequent follow-ups should be planned. Further prospective studies are necessary to clarify all the risk factors contributing to the appearance of FPFs after HA.

A Meta-Analytical Review of Antecedents of Organizational Ambidexterity

2021 ◽  
Vol 17 (4) ◽  
pp. 28-51
Author(s):  
Ishita Batra ◽  
Preethi P. ◽  
Sanjay Dhir
Keyword(s):  
Meta Analysis ◽  
Empirical Studies ◽  
Organizational Ambidexterity ◽  
Review Of Literature ◽  
Research Papers ◽  
Factors Affecting ◽  
Extant Literature ◽  
Analytical Review ◽  
Substantial Interest ◽  
Context Characteristics

The aim of the study is to conduct a structured review of literature on the antecedents of organizational ambidexterity by reconciling the mixed outcomes produced by the extant literature. This study offers some theoretical insights into the divergent views of authors on these factors by analysing the empirical studies done in the literature. This paper systematically analyses the extant literature on the factors affecting organizations' ambidexterity, using meta-analysis and the theory, context, characteristics, and methodology (TCCM) framework. Forty-three research papers across various journals that discussed the correlation of the variables with organizational ambidexterity were selected. The sample size was 17,383, and 20 variables were selected for the analysis. The results revealed that two variables showed high levels of heterogeneity. The implications of this study are relevant to the present business scenario and of substantial interest to scholars, as they provide a more detailed understanding of the very foundation of organizational ambidexterity.

scholarly journals Influence of the tillage method on the development of leaf diseases of winter wheat

2021 ◽  
Vol 285 ◽  
pp. 02027
Author(s):  
O. Yu. Kremneva ◽  
K. E. Gasiyan ◽  
A. V. Ponomarev ◽  
A. Kokhmetova ◽  
S. I. Novoseletsky
Keyword(s):  
Winter Wheat ◽  
Plant Protection ◽  
Tillage Systems ◽  
Protection Measures ◽  
Factors Affecting ◽  
No Till ◽  
Soft Winter Wheat ◽  
Tillage Method ◽  
Experimental Plots

To carry out effective plant protection measures, it is necessary to take into account all the factors affecting the quality of the crop. The aim of our research was to study the degree of development of leaf diseases of winter wheat and the rate of infestation of crops, depending on the tillage method. The studies were carried out in 2019-2020 at the experimental plots of “Kuban educational farm” in Krasnodar. For the research, four experimental plots with Steppe variety of soft winter wheat were created, where various soil cultivation systems were applied: 1 - No-Till (zero technology), 2 - moldboard-free technology, 3 - recommended, 4 - moldboard technology. The article presents data on the degree of development of diseases and the degree of infestation of winter wheat plants in the crops of test plots with various tillage systems. It was found that the most preferable is the use of the recommended type of treatment, since with it the least number of diseases develops and the degree of development of pathogens is reduced by 2-3 times in comparison with other options. The influence of the tillage method on the number and composition of phytopathogen spores was revealed.

scholarly journals Investigation of moderator factors in e-business adoption: A quantitative meta-analysis of moderating effects on the drivers of intention and behavior

2017 ◽  
Vol 14 (1) ◽  
pp. 75-102 ◽  
Author(s):  
Bostjan Sumak ◽  
Marjan Hericko ◽  
Zoran Budimac ◽  
Maja Pusnik
Keyword(s):  
Technology Acceptance ◽  
New Technologies ◽  
Causal Effect ◽  
Meta Analysis ◽  
Moderating Effect ◽  
Factors Affecting ◽  
Adoption Research ◽  
Acceptance Model ◽  
Almost All ◽  
Business Technology

E-business technology is becoming one of the most important global markets where e-business solutions will have to adapt to new technologies. The main objective in this study was to synthesize existing knowledge in the field of e-business technology acceptance and to understand differences in Technology Acceptance Model (TAM) related causal effect sizes for different e-business contexts. A quantitative meta-analysis of existing empirical research about factors affecting e-business adoption was conducted using 89 published papers that provided empirical data about causal relationships. A moderator analysis was carried out to investigate the moderating effect of four factors: consumer type, device type, continent and respondent type. The results of the study showed a moderating effect for all four proposed factors in almost all TAM-related causal paths. The study also showed that TAM is the most common theory being applied in e-business adoption research.

scholarly journals Factors affecting medial temporal lobe engagement for past and future episodic events: An ALE meta-analysis of neuroimaging studies

2012 ◽  
Vol 80 (1) ◽  
pp. 111-125 ◽  
Author(s):  
Armelle Viard ◽  
Béatrice Desgranges ◽  
Francis Eustache ◽  
Pascale Piolino
Keyword(s):  
Temporal Lobe ◽  
Medial Temporal Lobe ◽  
Meta Analysis ◽  
Factors Affecting ◽  
Episodic Events
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