The possible effect of different types of ventilation on reducing operation theatre infections: a meta-analysis

Alliance experience has been a frequent topic in strategic alliance research in recent decades. Nonetheless, its performance consequences, either as a whole or differentiated into general versus partner-specific alliance experience, are neither theoretically clear nor empirically consistent. We use a range of meta-analytic techniques to integrate the empirical findings of 143 studies and provide a more conclusive assessment compared to prior research. Our study thus addresses a long-standing, understudied, and controversial topic: the distinction between the two types of alliance experiences. Going beyond traditional sub-group analysis, we reveal the contextual contingencies by examining how different types of alliance experiences and performance outcomes jointly affect the alliance experience–performance relationship. Moreover, we identify critical country-level institutional contingencies that moderate the focal effect.

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Efficacy of Different Types of Exercise on Cognitive Function in People With MCI or Dementia: A Network Meta-Analysis

Innovation in Aging ◽

10.1093/geroni/igaa057.938 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 293-293

Author(s):

Qiaoqin Wan ◽

Xiuxiu Huang ◽

Xiaoyan Zhao ◽

Bei Li ◽

Ying Cai ◽

...

Keyword(s):

Executive Function ◽

Cognitive Function ◽

Cognitive Dysfunction ◽

Meta Analysis ◽

Memory Function ◽

Controlled Trials ◽

Exercise Interventions ◽

Exercise Treatment ◽

Different Types ◽

Global Cognition

Abstract With the accelerating progress of population aging, cognitive dysfunction is becoming increasingly prevalent. Exercise, as a promising non-pharmaceutical therapy, showed favorable effects on cognitive function. But which type is the most effective exercise treatment is still unclear. This study compared the efficacy of different types of exercise interventions based on network meta-analysis and aimed to explore the optimal exercise treatment for cognitive decline. The electronic databases of PubMed, Web of Science, Embase, Cochrane Central Register of Controlled Trials, SPORTDiscus, PsycInfoy, and OpenGrey were searched from inception to September 2019. We only included randomized controlled trials that examined the effectiveness of exercise interventions in people with MCI or dementia. Primary outcomes were global cognition, executive function and memory function. Standard mean difference (SMD) and its 95% confidence interval (CI) were calculated to estimate the effect sizes. Finally, 73 articles with 5748 participants were included. The results showed all kinds of exercise interventions were effective on global cognition and resistance exercise was probably the most effective exercise treatment to prevent the decrease of global cognition (SMD=1.05, 95%CI 0.56-1.54), executive function (SMD=0.85, 95%CI 0.21-1.49) and memory function (SMD=0.32, 95%CI 0.01-0.63) for people with cognitive dysfunction. Subgroup analysis revealed multi-component exercise showed more favorable effects on global cognition (SMD=0.99, 95%CI 0.44-1.54) and executive function (SMD=0.72, 95%CI 0.06-1.38) in people with MCI. In conclusion, resistance exercise tended to be the optimal exercise type for people with cognitive dysfunction, especially for people with dementia. And multi-component exercise also should be recommended for people with MCI.

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Supplemental Material for The effects of different types of treatment for anxiety on repetitive negative thinking: A meta-analysis

Clinical Psychology Science and Practice ◽

10.1037/h0101777.supp ◽

2020 ◽

Keyword(s):

Meta Analysis ◽

Repetitive Negative Thinking ◽

Negative Thinking ◽

Different Types

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A Statistical Method for Synthesizing Meta-Analyses

Computational and Mathematical Methods in Medicine ◽

10.1155/2013/732989 ◽

2013 ◽

Vol 2013 ◽

pp. 1-9 ◽

Cited By ~ 4

Author(s):

Liansheng Larry Tang ◽

Michael Caudy ◽

Faye Taxman

Keyword(s):

Statistical Method ◽

Effect Size ◽

Meta Analysis ◽

Effect Sizes ◽

Weighted Mean ◽

Summary Effect ◽

Different Types ◽

Meta Analyses ◽

Size Estimates ◽

Similar Search

Multiple meta-analyses may use similar search criteria and focus on the same topic of interest, but they may yield different or sometimes discordant results. The lack of statistical methods for synthesizing these findings makes it challenging to properly interpret the results from multiple meta-analyses, especially when their results are conflicting. In this paper, we first introduce a method to synthesize the meta-analytic results when multiple meta-analyses use the same type of summary effect estimates. When meta-analyses use different types of effect sizes, the meta-analysis results cannot be directly combined. We propose a two-step frequentist procedure to first convert the effect size estimates to the same metric and then summarize them with a weighted mean estimate. Our proposed method offers several advantages over existing methods by Hemming et al. (2012). First, different types of summary effect sizes are considered. Second, our method provides the same overall effect size as conducting a meta-analysis on all individual studies from multiple meta-analyses. We illustrate the application of the proposed methods in two examples and discuss their implications for the field of meta-analysis.

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The impact of JAK2V617F mutation on different types of thrombosis risk in patients with essential thrombocythemia: a meta-analysis

International Journal of Hematology ◽

10.1007/s12185-015-1808-y ◽

2015 ◽

Vol 102 (2) ◽

pp. 170-180 ◽

Cited By ~ 7

Author(s):

Youwen Qin ◽

Xiaorui Wang ◽

Chuxian Zhao ◽

Chun Wang ◽

Yining Yang

Keyword(s):

Essential Thrombocythemia ◽

Meta Analysis ◽

Jak2v617f Mutation ◽

Thrombosis Risk ◽

Different Types ◽

The Impact

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The Impact of Different Types of Exercise Training on Peripheral Blood Brain-Derived Neurotrophic Factor Concentrations in Older Adults: A Meta-Analysis

Sports Medicine ◽

10.1007/s40279-019-01148-z ◽

2019 ◽

Vol 49 (10) ◽

pp. 1529-1546 ◽

Cited By ~ 9

Author(s):

Nastasia Marinus ◽

Dominique Hansen ◽

Peter Feys ◽

Raf Meesen ◽

Annick Timmermans ◽

...

Keyword(s):

Older Adults ◽

Exercise Training ◽

Neurotrophic Factor ◽

Peripheral Blood ◽

Meta Analysis ◽

Brain Derived Neurotrophic Factor ◽

Blood Brain ◽

Different Types ◽

The Impact

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Replacing Synthetic Nitrogen Fertilizer with Different Types of Organic Materials Improves Grain Yield in China: A Meta-Analysis

Agronomy ◽

10.3390/agronomy11122429 ◽

2021 ◽

Vol 11 (12) ◽

pp. 2429

Author(s):

Xiaoru Fan ◽

Zekai Chen ◽

Zihan Niu ◽

Ruiyao Zeng ◽

Jingmin Ou ◽

...

Keyword(s):

Grain Yield ◽

Nitrogen Fertilizer ◽

Organic Materials ◽

Crop Yields ◽

Meta Analysis ◽

Chicken Manure ◽

Agricultural Practice ◽

Different Types ◽

Synthetic Nitrogen Fertilizer

Synthetic nitrogen fertilizer substitution (NSS) with different types of organic material is a cleaner agricultural practice for reducing the application of synthetic N input in farmlands while also relieving the environmental issues caused by the discharge of organic wastes. However, the effects of the NSS practice on crop yields, being the primary objective of agricultural activity, is still uncertain in China. This study conducted a meta-analysis to assess the impacts of the NSS practices with different types of organic materials on crop yields. Results showed that the average crop yield was increased by 3.4%, with significant differences under NSS, thereby demonstrating that this practice contributed to improving crop yields, especially of rice and maize. According to published reports, the NSS practices involving chicken manure, pig manure, and crop straw increased crop yields by 4.79, 7.68, and 3.28%, respectively, with significant differences, thus demonstrating the superior effects needed for replacing synthetic N fertilizer. Moreover, substitution ratios (SR) between 0% and 60% could be suggested when using the NSS practice, with the high SR recommended when the original soil fertility was adequate for crops. Considering the long-term effects of applied organic materials, improving the grain yield with the NSS practice should be expected in the long-term. By effectively applying the NSS, this study attempted to scientifically decide on the type of organic materials and the appropriate SR based on the conditions of the soil and the crop. The results provide research information for the development of clean agricultural production and food security in China.

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