A meta-analysis of the capitalisation of CAP direct payments into land prices

2021 ◽  
Author(s):  
Alessandro Varacca ◽  
Giovanni Guastella ◽  
Stefano Pareglio ◽  
Paolo Sckokai
Keyword(s):  
Agricultural Policy ◽  
Meta Analysis ◽  
Extensive Review ◽  
The European Union ◽  
Decoupled Payments ◽  
Land Prices ◽  
Implementation Scheme ◽  
Direct Payments ◽  
Meta Regression ◽  
The Impact

Abstract The impact of the European Union common agricultural policy direct payments on land prices has received substantial attention in recent years, leading to heterogeneous evidence of capitalisation for both coupled and decoupled payments. In this paper, we provide an extensive review of the empirical works addressing this issue econometrically and compare their results through a Bayesian meta-regression model, focussing on the impact of decoupling and its implementation schemes. We find that the introduction of decoupled payments increased the capitalisation rate, although the extent of this increment hinges on the implementation scheme adopted by the member state.

scholarly journals Estimating the Impact of Decoupled Payments on Farm Production in Northern Ireland: An Instrumental Variable Fixed Effect Approach

2020 ◽  
Vol 12 (8) ◽  
pp. 3222
Author(s):  
Kehinde Oluseyi Olagunju ◽  
Myles Patton ◽  
Siyi Feng
Keyword(s):  
Northern Ireland ◽  
Agricultural Policy ◽  
Instrumental Variable ◽  
Fixed Effect Model ◽  
Livestock Production ◽  
Fixed Effect ◽  
Agricultural Subsidies ◽  
Decoupled Payments ◽  
Current Production ◽  
The Impact

The production stimulating impact of agricultural subsidies has been a well-debated topic in agricultural policy analysis for some decades. In light of the EU reform of the Common Agricultural Policy (CAP) in year 2005 in which agricultural subsidies were decoupled from current production decisions and the modification to this payment in 2015, this study investigates the impact of decoupled payments under these two reforms on livestock production in Northern Ireland. The study uses a farm-level panel dataset covering 2008–2016 period and employs an instrumental variable fixed effect model to control for relevant sources of endogeneity bias. According to the empirical results, the production impacts of decoupled payments were positive and significant but with differential impacts across livestock production sectors, suggesting that decoupled payments still maintain a significant effect on agricultural production and provide an indication of the supply response to changes in decoupled payments.

Die europäische Agrarpolitik vor dem Hintergrund der Osterweiterung

2003 ◽  
Vol 52 (1) ◽  
Author(s):  
Reimar von Alvensleben ◽  
Bernhard Brümmer ◽  
Ulrich Koester ◽  
Klaus Frohberg
Keyword(s):  
Agricultural Policy ◽  
Consumer Welfare ◽  
World Market ◽  
Market Mechanism ◽  
Niche Markets ◽  
Member States ◽  
Regional Food ◽  
Direct Payments ◽  
The Impact ◽  
The Eu

AbstractReimar von Alvensleben asks in his article whether the “Agrarwende” in Germany could be a model for Europe. He argues that the new agricultural policy (the so-called “Agrarwende”), which has been proclaimed and implemented after the German BSE crisis 2000/2001, adds new problems to the already existing problems of the Common Agricultural Policy (CAP). The strategy of improving international competitiveness of German agriculture by promoting the niche markets for organic food, animal-friendly produced food and regional food is unrealistic and thus neglecting the problem of improving the competitiveness of 85−90% of German agriculture. The criterion of ecological efficiency (How to achieve ecological goals at lowest costs?) is totally neglected in agricultural environmental policy. The strategy of implementing environmental and animal welfare standards by the market mechanism will not lead to reasonable results because of perception distortions of the consumers. As a consequence of distorted perception of food risks by politicians, cost of risk prevention are too high and/or safety and health standards in other less spectaculous areas are too low. For these reasons he concludes that the “Agrarwende” in Germany cannot be regarded as a model for Europe, especially not for Eastern Europe.Bernhard Brümmer and Ulrich Koester write in their paper that the Eastern Enlargement of the EU will have significant implications for governance of the CAP. The evolution of the CAP has led to a permanent increase in the intensity of regulation, although the rate of external protection has declined. Past experience - mainly revealed by the European Court of Auditors - has evidenced many irregularities and even fraud as a by-product of the CAP. Governance problems are due to badly designed policies, which demand control of even individual farms and give the member countries, administrative regions (which are supposed to implement the policies on the local scale) and the individual farms themselves incentives to breach the rules. In their view governance problems will certainly increase in the enlarged EU. The new member countries have a weaker administrative capacity and are subject to more corruption than the present EU countries. Adequate policy reaction should lead to fundamental changes of the CAP.Klaus Frohberg argues that in its Mid Term Review the EU-commission proposes a change in the most important instruments of the CAP. Direct payments and intervention prices belong to this group. In his paper the impact of these changes is discussed. Direct payments shall become decoupled from production and be summarised into a single payment to farmers. In addition, the right of these transfers shall be made tradable independent of a simultaneous exchange of land. With regard to the intervention prices they shall be reduced as to approach world market levels. Assuming that the Member States will confirm the proposals the CAP is expected to improve considerably. Allocation and transfer efficiency will increase, consumer welfare will go slightly up, taxpayers will be little if at all affected and the EU can defend its position in the negotiations of the ongoing WTO round. These advantages accrue to the current as well as to the new Member States. In spite of the improvements the CAP still needs to be enhanced in some areas such as the market organisation of sugar and milk.

scholarly journals When does the use of individual patient data in network meta-analysis make a difference? A simulation study

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Steve Kanters ◽  
Mohammad Ehsanul Karim ◽  
Kristian Thorlund ◽  
Aslam Anis ◽  
Nick Bansback
Keyword(s):  
Simulation Study ◽  
Treatment Effect ◽  
Mean Squared Error ◽  
Individual Patient Data ◽  
Meta Analysis ◽  
Model Performance ◽  
Patient Data ◽  
Meta Regression ◽  
Treatment Comparisons ◽  
The Impact

Abstract Background The use of individual patient data (IPD) in network meta-analyses (NMA) is rapidly growing. This study aimed to determine, through simulations, the impact of select factors on the validity and precision of NMA estimates when combining IPD and aggregate data (AgD) relative to using AgD only. Methods Three analysis strategies were compared via simulations: 1) AgD NMA without adjustments (AgD-NMA); 2) AgD NMA with meta-regression (AgD-NMA-MR); and 3) IPD-AgD NMA with meta-regression (IPD-NMA). We compared 108 parameter permutations: number of network nodes (3, 5 or 10); proportion of treatment comparisons informed by IPD (low, medium or high); equal size trials (2-armed with 200 patients per arm) or larger IPD trials (500 patients per arm); sparse or well-populated networks; and type of effect-modification (none, constant across treatment comparisons, or exchangeable). Data were generated over 200 simulations for each combination of parameters, each using linear regression with Normal distributions. To assess model performance and estimate validity, the mean squared error (MSE) and bias of treatment-effect and covariate estimates were collected. Standard errors (SE) and percentiles were used to compare estimate precision. Results Overall, IPD-NMA performed best in terms of validity and precision. The median MSE was lower in the IPD-NMA in 88 of 108 scenarios (similar results otherwise). On average, the IPD-NMA median MSE was 0.54 times the median using AgD-NMA-MR. Similarly, the SEs of the IPD-NMA treatment-effect estimates were 1/5 the size of AgD-NMA-MR SEs. The magnitude of superior validity and precision of using IPD-NMA varied across scenarios and was associated with the amount of IPD. Using IPD in small or sparse networks consistently led to improved validity and precision; however, in large/dense networks IPD tended to have negligible impact if too few IPD were included. Similar results also apply to the meta-regression coefficient estimates. Conclusions Our simulation study suggests that the use of IPD in NMA will considerably improve the validity and precision of estimates of treatment effect and regression coefficients in the most NMA IPD data-scenarios. However, IPD may not add meaningful validity and precision to NMAs of large and dense treatment networks when negligible IPD are used.

Carbapenem Resistance, Initial Antibiotic Therapy, and Mortality inKlebsiella pneumoniaeBacteremia: A Systematic Review and Meta-Analysis

2017 ◽  
Vol 38 (11) ◽  
pp. 1319-1328 ◽  
Author(s):  
Philipp P. Kohler ◽  
Cheryl Volling ◽  
Karen Green ◽  
Elizabeth M. Uleryk ◽  
Prakesh S. Shah ◽  
...  
Keyword(s):  
Systematic Review ◽  
Antibiotic Therapy ◽  
Meta Analysis ◽  
Carbapenem Resistance ◽  
Carbapenem Resistant ◽  
Initial Antibiotic Therapy ◽  
Meta Regression ◽  
The Difference ◽  
Meta Regression Analysis ◽  
The Impact

BACKGROUNDMortality associated with infections caused by carbapenem-resistantEnterobacteriaceae(CRE) is higher than mortality due to carbapenem-sensitive pathogens.OBJECTIVETo examine the association between mortality from bacteremia caused by carbapenem-resistant (CRKP) and carbapenem-sensitiveKlebsiella pneumoniae(CSKP) and to assess the impact of appropriate initial antibiotic therapy (IAT) on mortality.DESIGNSystematic review and meta-analysisMETHODSWe searched MEDLINE, EMBASE, CINAHL, and Wiley Cochrane databases through August 31, 2016, for observational studies reporting mortality among adult patients with CRKP and CSKP bacteremia. Search terms were related toKlebsiella, carbapenem-resistance, and infection. Studies including fewer than 10 patients per group were excluded. A random-effects model and meta-regression were used to assess the relationship between carbapenem-resistance, appropriateness of IAT, and mortality.RESULTSMortality was higher in patients who had CRKP bacteremia than in patients with CSKP bacteremia (15 studies; 1,019 CRKP and 1,148 CSKP patients; unadjusted odds ratio [OR], 2.2; 95% confidence interval [CI], 1.8–2.6; I2=0). Mortality was lower in patients with appropriate IAT than in those without appropriate IAT (7 studies; 658 patients; unadjusted OR, 0.5; 95% CI, 0.3–0.8; I2=36%). CRKP patients (11 studies; 1,326 patients; 8-year period) were consistently less likely to receive appropriate IAT (unadjusted OR, 0.5; 95% CI, 0.3–0.7; I2=43%). Our meta-regression analysis identified a significant association between the difference in appropriate IAT and mortality (OR per 10% difference in IAT, 1.3; 95% CI, 1.0–1.6).CONCLUSIONSAppropriateness of IAT is an important contributor to the observed difference in mortality between patients with CRKP bacteremia and patients with CSKP bacteremia.Infect Control Hosp Epidemiol2017;38:1319–1328

scholarly journals Vitamin D2 and D3 Supplementation Effect on Serum 25(OH)D Levels: A Meta-Analysis

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1782-1782
Author(s):  
Meline Chakalian ◽  
Joyce Cao ◽  
Jiang Hu ◽  
Casey Vanous ◽  
Simon Sum
Keyword(s):  
Vitamin D ◽  
Meta Analysis ◽  
Small Sample ◽  
Relative Potency ◽  
Health Concern ◽  
Outcome Variable ◽  
Vitamin D2 ◽  
Baseline Serum ◽  
Meta Regression ◽  
The Impact

Abstract Objectives Vitamin D insufficiency is a global health concern that affects nearly 50% of the population worldwide. Growing demand for vegan/vegetarian products has aroused interest in the plant-sourced D2 form for use in dietary supplements. However, vitamin D2’s ability to raise serum 25(OH)D levels in relation to D3 among existing scientific literature is inconclusive. This study sought to compare vitamin D2 to D3 in increasing serum 25(OH)D levels in order to better understand the relative potency and dosage required to address vitamin D insufficiencies. Methods PubMed and Embase databases were searched through July of 2018. Randomized controlled trials comparing D2 and D3 supplementation of equivalent dosages and the resulting increase in serum 25(OH)D levels in adults were eligible for this meta-analysis. A meta regression was conducted to compare the impact of both vitamin D forms on serum 25(OH)D levels. The outcome variable evaluated was the serum 25(OH)D levels. Results Nine RCTs (n = 628) with vitamin D dose ranging from 10 mcg per day to 1250 mcg per week, and an intervention duration from 2 to 16 weeks were eligible. Subjects included healthy adults as well as those with chronic kidney disease. There was substantial heterogeneity among the studies (I2 = 78.07%). The meta-regression showed vitamin D supplementation regardless of form was effective in raising serum 25(OH)D levels (P < 0.0001). The mean effect size expressed as the standardized mean difference (SMD) from baseline serum 25(OH)D levels was 1.16 [95% CI: 0.83, 1.49] for D2 and 1.52 [95% CI: 0.99, 2.04] for D3. While there was a trend of greater increase caused by D3 numerically, the difference between D2 and D3 was not statistically significant. When duration and frequency of supplementation were examined, similar trends of non-significant greater increases for D3 relative to D2 were observed. Conclusions This research shows both vitamin D2 and D3 supplementation can significantly increase serum 25(OH)D levels. Though the results did not reach statistical significance, there is a consistent trend of vitamin D3 offering additional effectiveness relative to D2. The high heterogeneity across studies and small sample size likely contributed to the non-significant results and limited the ability to identify a quantitative relative potency that can be used for a D2 dosage recommendation. Funding Sources None.

scholarly journals European perspectives on nitrogen fixation and the application of mineral nitrogen

1996 ◽  
Vol 6 ◽  
pp. 95-98
Author(s):  
L.R. Mytton
Keyword(s):  
Nitrogen Fixation ◽  
Agricultural Policy ◽  
Common Agricultural Policy ◽  
The European Union ◽  
Factors Influencing ◽  
The Common ◽  
Fertiliser Use ◽  
Major Factors ◽  
The Impact ◽  
Farm Subsidies

An analysis is made of the main factors influencing nitrogen use in the European Union (EU). The Common Agricultural Policy (CAP) is identified as a major factor. A brief explanation is given of its functions and of recent reforms which are aimed at reducing overproduction. These reforms should favour more efficient use of nitrogen. The reasons why this is difficult to achieve are explained and the major factors influencing our ability to balance the nitrogen economies of food production are identified. The interrelationship between these factors is then used to predict the impact of CAP reforms on research, on fertiliser use and on the wider use of legumes. Keywords: Common Agricultural Policy, Europe, farm subsidies, legumes, nitrogen cycle, nitrogen fertiliser, nitrogen fixation, over-production, pollution, soil organic matter

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