Retesting symmetry and homogeneity in a cointegrated demand system with bootstrapping: The case of meat demand in Greece

A small Almost Ideal Demand System is estimated for Greek meat consumption using the Johansen procedure in conjunction with parametric bootstrapping and Bartlett corrections. Asymptotic Wald and likelihood ratio tests broadly support the predicted number of cointegrating relationships but reject symmetry and homogeneity. Bootstrapping and Bartlett corrections give support to symmetry and homogeneity but give less support for the predicted number of cointegrating relationships.Jel classification: C32 D12First version received: September 2001/Final version received: March 2003     

A system of equations model of UK tourism demand in neighbouring countries

This paper uses a system of equations model to examine tourism demand during periods of destination country transition and integration into the wider international community. The Almost Ideal Demand System model is applied to the UK demand for tourism in the neighbouring destinations, France, Spain and Portugal. Spain and Portugal are interesting cases as, during the period under consideration, they experienced a process of transition from economies with characteristics typical of developing countries, only entering the World Bank's industrialized countries classification in the 1980s. The paper examines the evolution of tourism demand during these countries' transition from ‘developing’ to ‘developed’ status. Consideration of France as a neighbouring destination also allows the behaviour of tourism demand to be compared between relatively rich and poor countries. The results show the extent to which the cross-country behaviour of demand becomes more or less similar over time with respect to changes in expenditure and effective prices. The expenditure elasticities are greater for Spain than France during the initial period, indicating that tourism can assist countries to ‘catch-up’ with their richer neighbours. However, this outcome is not always the case and may not persist, as Portugal had a low initial expenditure elasticity and Spain's relatively high expenditure elasticity decreased over time. Destinations' sensitivity to changes in their own and competitors' prices can also change over time, as indicated by the increases in the own- and cross-price elasticities for Spain, compared with the decreases for France and Portugal. The cross-price elasticity estimates indicate substitutability between the immediate neighbours, Portugal and Spain, and France and Spain.     

An empirical study of outbound tourism demand in the UK

A general to specific methodology is used to construct UK demand for outbound tourism models to twelve destinations. A tourism destination preference index is introduced to take into account social, cultural and psychological influences on tourists' decisions concerning their overseas holiday destinations. The tests support the existence of a cointegration relationship for each of 11 UK overseas holiday destinations. The corresponding error correction models are estimated. The empirical results show that the long-run income elasticities for all destinations range from 1.70 to 3.90 with an average of 2.367. The lowest and highest short-run income elasticities are 1.05 and 3.78 respectively, with an average of 2.216. The estimates of the income elasticities imply that overseas holidays are highly income elastic while the own-price elasticities suggest that the demand for UK outbound tourism is relatively own-price inelastic. In terms of the significance of substitution prices in the regression equations, Ireland is the favourite substitute destination for UK outbound tourists. Ex post forecasts over a period of six years are generated from the ECM models and the results compared with those of a naive model, an AR(1) model, an ARMA(p,q) model, and a VAR model. The forecasting performance criteria show that the ECM model has the best overall forecasting performance for UK outbound tourism.     

Assessing the role of futures position substitutability in a monthly slaughtered pork factor demand by US processors: a cointegrated VAR model approach

This article combines cointegrated VAR modelling with basic neoclassical production microeconomics in a new way that tests for, and illuminates the empirical nature of, the monthly US pork processing sector’s factor demand for slaughtered pork. Statistical evidence strongly suggests that the US pork processing sector has a Hicksian Cobb–Douglas slaughtered pork demand that arises from applying Shephard’s lemma to the sector’s cost function and that US pork processors treat slaughtered pork and related futures positions as close factor substitutes. In the wake of major and ongoing futures market events and trends, this study establishes and statistically tests a theoretical link between futures price movements and impacts on the underlying slaughtered pork market through monthly formation of US pork processors’ factor demand for slaughtered pork. Evidence suggests that demand agents shift between demands for the two substitutes based on movements in the slaughter/futures price ratio that results in a market-stabilizing cushion against sharp pork price movements such as those observed in the late-1990s. Statistical and diagnostic evidence suggests that our modelled non-experimental data and estimated Hicksian demand that arose from the cointegrated VAR model’s cointegration space met Haavelmo’s setting of passive variables and associated ceteris paribus conditions.     

On the validity and identification of long-run restrictions for a cointegrated system

The identification approach suggested in Blanchard and Quah [1989 The dynamic effects of aggregate supply and demand disturbances. Am. Econ. Rev. 79:655–673] and King et al. [1991 Stochastic trends and economic flucuations. Am. Econ. Rev. 81:819–840] makes use of the long-run properties of structural disturbances. This paper provides economic underpinning for the use of long-run identifying restrictions by showing formally its validity for the class of exogenous growth models under certain conditions. This paper also obtains the minimum number of restrictions, in addition to the long-run restrictions, required for the identification of structural disturbances in a co-integrated system.     

Sun,sand and September 11: a model of tourism demand for the Maldives

Tourism is a key source of income for many small island economies, and so it is important to understand its determinants in such countries. We estimate a tourism demand model for the Maldives’ five main source markets and find that, in addition to the usual foreign income and own price variables, the cost of travel and of visiting alternative destinations (often missing from studies of this nature) almost always have a significant role. In addition, the country’s own marketing efforts prove effective at influencing demand. Finally, we find evidence the War on Terror has persistently depressed demand from some markets.     

Determinants of the demand for education in Spain

The aim of this paper is to estimate an equation for household demand for both secondary and university education, using an estimation of the opportunity cost associated with the decision to invest in education. Limited dependent variable models are applied to the data provided by the Family Budget Survey 1991 for Spain. The results show that the social and economic status of the family has a comparatively greater impact on household expenditure on secondary education than on university education. The opportunity cost is also shown to be a decisive variable in the decision to invest in secondary education, although the results are less conclusive in the case of university education.     

Static and dynamic forecasting of short-run demand for money

Previous studies of static and dynamic out-of-sample simulations of the demand for money have indicated a breakdown in the short-run real money balances over the past 1974 forecast period. Using the varying parameter regression technique, the findings of this paper demonstrate that previous results are misleading because the shift of the money demand is obscured by the constant coefficient estimation technique. Our estimation procedure has not only drastically improved both static and dynamic forecasts but has also solved the missing money puzzle.     

Cointegration analysis and the UK demand for nitrogen fertilizer

Nitrogen fertilizer taxes have been proposed as a means of controlling agricultural ‘over-production’ and nitrate pollution of water courses in the EC. This paper constructs time-series models of fertilizer demand which provide quantitative information relevant to this issue. Time-series data on the use of nitrogen fertilizer in UK agriculture is found to have a unit root with non-zero drift coupled with a one-time change in drift after testing against the alternative hypothesis that the process is trend-stationary with a break in trend. The stochastic component of the nitrogen use series is cointegrated with the ratio of the price of nitrogen fertilizer to the price of agricultural output. Appropriate error correction models are estimated. Both the short-run and long-run price elasticities of the response of nitrogen use are found to be rather low. Some brief policy conclusions are drawn.     

The concept of equilibrium and its use in demand forecasting

Forecasts of the future price and quantity of a service or commodity often ignore the dynamic interaction between demand and supply, perhaps because the economic meaning of these concepts is often rather fuzzily defined. This paper attempts to remove some of the fuzziness, and shows that the equilibrium point where supply and demand are equal has a clear interpretation. Further it argues that forecasts of the movement of the equilibrium point over time are meaningful and useful. Using the notion of equilibrium a model is constructed which forecasts simultaneously the rates of change of price and output. This model shows how a forecast is biased when the interaction between demand and supply is not included and what special assumptions are implicitly made by a forecaster who ignores it. Finally, the paper shows how uncertainty about the parameters of the model affects the estimates of the rates of change, providing uncertain estimates of price and quantity.     

On the relative importance of demand and supply shocks: a panel VAR study for US states

This article is a panel VAR study of demand and supply shocks in the USA using state-level data where structural shocks are decomposed into state idiosyncratic and common components. Decomposition suggests that in all instances, idiosyncratic state shocks rather than common shocks have larger impact and explain most variation in both the state-level unemployment rate and real gross state product. Further, demand shocks are the primary driving force in unemployment rate fluctuations, while both demand and supply are important in output movements to varying degree of impact and importance depending on the use of quarterly or annual data.     

Inter-fuel substitution,technical change and the demand for energy in the UK economy

A model for energy demand, based on a translog cost function is formulated. Unlike previous studies, technical progress is modelled by means of stochastic, as opposed to deterministic, trend components. The model is estimated using quarterly UK data for four economic sectors, and forecasts of the future level of demand are made.     

Fiscal illusion and the demand for government expenditures in the UK

This paper examines whether variables commonly used to test standard fiscal illusion arguments (that tax structure affects voters' demands for public goods) can help explain the time-series behaviour of government expenditure in the UK during 1955–1994. We modify a standard median voter model to incorporate fiscal illusion via ‘less visible' (indirect) taxes and deficit financing. While we find evidence that both are positively associated with increased government spending, this would appear to be consistent with both fiscal illusion and standard efficiency arguments.     

A macroeconomic model of aggregate supply and demand for the UK

In this paper we publish for the first time the econometric model of the UK economy recently developed at City University Business School (CUBS). The differentiating feature of the CUBS model is its concern with the ‘supply side’ and its attempt to estimate an aggregate production function. The model distinguishes between markets in goods and services, labour, capital, money and foreign exchange.     

Choice of mortgage instrument,liquidity constraints and the demand for housing debt in the UK

The research uses microdata to estimate reduced form mortgage demand equations based on truncated regressions, dissagregated by choice of mortgage instrument. The choice is between a standard annuity mortgage and a balloon type mortgage (the endowment). The estimates are used to indicate the differential impact of credit market rationing and financial liberalization on households. The results indicate significant variations in mortgage demand by choice of mortgage instrument. Econometric testing demonstrates that the choice between an endowment and a repayment mortgage can be used as an exogenous indicator of liquidity and portfolio positions and different user costs of owner occupation.     

Household demand for fats and oils: two-step estimation of a censored demand system

A censored system of household fat and oil demand equations is estimated with a two-step procedure, using cross-sectional data from the 1987–1988 US Nationwide Food Consumption Survey. Own price and total expenditure elasticities are close to unity and there is no evidence of gross substitutability. Compensated elasticities suggest net substitution among the products considered.     

The Effect of Labor's Bargaining Power on Wealth Inequality in the UK,USA, And France

This paper analyses the determinants of wealth inequality, measured as the share of wealth owned by the top 1 percent wealthiest individuals. We find that labor's bargaining power is a significant and important determinant of top wealth shares. Using a semi-structural vector autoregression (SVAR) model for the period 1970–2019, we estimate that shocks to labor's bargaining power explain 32 percent, 8 percent and 32 percent of the variation around the long-term trend in wealth inequality in the UK, USA and France, respectively.     

Resource use in general anaesthesia: a comparison of practice in Germany,France and the UK

Summary

This study reports the results of a study of anaesthetic resources used before, during and after various surgical procedures performed in the United Kingdom, Germany and France. A total of 1787 patients undergoing general anaesthesia for daycase knee arthroscopy, daycase laparoscopic gynaecological procedures, inpatient major non-gynaecological abdominal surgery or inpatient knee arthroscopy in a range of hospital settings were included in the study. The objective was to compare the use of anaesthetic agents, adjunct drugs and times spent in the various stages of surgery and recovery. An audit of the incidence of emesis in the postoperative recovery room and on the hospital ward was also undertaken. Results showed that the UK had the shortest median procedure times for induction, surgery and recovery. The pattern of drug use was generally similar for the main classes of anaesthetic agents and adjunct drugs, although the use of specific drugs in each class differed from country to country. Between 7% and 10% of patients suffered from one or more episodes of emesis. Practice differences between countries were apparent and differences in resource use indicate considerable scope for institutional cost savings on anaesthesia-related activities, beyond drug acquisition costs, in both France and Germany compared with the UK.     

A cost analysis of SIR-Spheres yttrium-90 resin microspheres versus tyrosine kinase inhibitors in the treatment of unresectable hepatocellular carcinoma in France,Italy, Spain and the UK

Abstract

Background and aims: A wide range of treatment options are available for hepatocellular carcinoma (HCC), including systemic treatment with tyrosine kinase inhibitors (TKIs) such as sorafenib and lenvatinib, immunotherapies, locoregional therapies such as selective internal radiation therapy (SIRT) and treatments with curative intent such as resection, radiofrequency ablation and liver transplantation. Given the substantial economic burden associated with HCC treatment, the aim of the present analysis was to establish the cost of using SIRT with SIR-Spheres yttrium-90 (Y-90) resin microspheres versus TKIs from healthcare payer perspectives in France, Italy, Spain and the United Kingdom (UK).

Methods: A cost model was developed to capture the costs of initial systemic treatment with sorafenib (95%) or lenvatinib (5%) versus SIRT in patients with HCC in Barcelona Clinic Liver Cancer (BCLC) stages B and C. A nested Markov model was utilized to model transitions between progression-free survival (PFS), progression and death, in addition to transitions between subsequent treatment lines. Cost and resource use data were identified from published sources in each of the four countries.

Results: Relative to TKIs, SIRT with SIR-Spheres Y-90 resin microspheres were found to be cost saving in all four country settings, with the additional costs of the microspheres and the SIRT procedure being more than offset by reductions in drug and drug administration costs, and treatment of adverse events. Across the four country settings, total cost savings with SIR-Spheres Y-90 resin microspheres fell within the range 5.4–24.9% and SIRT resulted in more patients ultimately receiving treatments with curative intent (4.6 vs. 1.4% of eligible patients).

Conclusion: SIR-Spheres Y-90 resin microspheres resulted in cost savings relative to TKIs in the treatment of unresectable HCC in all four country settings, while increasing the proportion of patients who become eligible for treatments with curative intent.     

Oil price uncertainty and the business cycle: Accounting for the influences of global supply and demand within a VAR GARCH-in-mean framework

ABSTRACT

This article reinvestigates the influence of oil price uncertainty on real economic activity in the United States using a four-variable VAR GARCH-in-mean asymmetric BEKK model. In contrast to previous studies in this area, the analysis focuses on business cycle fluctuations and we control for global supply and demand factors that might affect the real price of oil, its volatility as well as the US economy. We find that – even after accounting for these factors – oil price uncertainty still has a highly significant negative influence on the US business cycle. Our computations show that the effect is economically important during several periods, mostly after a significant variance shift in the mid-1980s. We simultaneously estimate the effect on the global business cycle but find that it is comparatively weak. Finally, significant spillover effects in the GARCH model suggest that oil price volatility is a gauge and channel of transmission of more general macroeconomic shocks and uncertainty. These linkages are particularly strong in case of unexpected bad news.