Modelling the effects of promotion expenditures on sales of pharmaceuticals

The successful innovation of pharmaceuticals requires a substantial amount of marketing support, despite concerns about the effects of these marketing efforts. This study considers prior findings that indicate that higher marketing expenditures for a brand reduce its price elasticity of demand, which may lead to higher prices, in the context of the Dutch pharmaceutical market. The authors find that parameters are heterogeneous across brands, and that marketing effects differ across product life cycle stages. They propose a separate analysis of established and new brands. For established brands, marketing efforts neither have a positive effect on sales, nor do they affect the price elasticity. For new brands, several proposed models might capture their diffusion pattern; the diffusion-of-innovation models provide the best results. Marketing accelerates the rate of diffusion and leads to a higher baseline level of sales.     

ECONOMIC INCENTIVES AND CONTRACTS: THE USE OF PSYCHOTROPIC MEDICATIONS

The advent of novel psychotropic medications has revolutionized treatments for mental illnesses over the past few decades. Concurrently, changes in mental health coverage, particularly for Medicaid patients, created economic incentives for insurance carriers to shift costs and to encourage the use of psychotropic drugs. To quantify these effects, based on the framework in Griliches' seminal study on hybrid corn, we estimate logistic diffusion models using a longitudinal data set on Medicaid drug utilization. We find that financial incentives played a significant role in encouraging use of new medications that have lower physician specialty skill requirements. ( JEL O30, O33, I18, L14)     

The Risks and Dynamics of Health Care Expenditures in Urban China： An Illustration in Kunshan City

This paper examines the individual financial risk of health care expenditures over time in urban China, .using longitudinal health expenditure data from 2005 to 2007 in Kunshan City, Jiangsu Province, China. We find that the stochastic process of log total health care expenditures is well represented by the sum of an AR（3） process and white noise process. Simulating this model, we find that the urban health insurance system protects enrollees from the risk of catastrophic health care expenditures by bearing the majority of the health care expenditures. However, out-of-pocket health care expenditures represents a considerable risk to an individual＇s financial status.     

地方财政卫生支出的影响因素研究

本文利用中国31个省市区1997~2009的面板数据,研究了经济因素、人口因素以及卫生资源因素对地方财政卫生支出的影响。采用固定效应模型的估计结果表明,不同因素对地方财政卫生支出的影响存在较大差异,其中,经济因素是影响卫生支出最重要的因素。我国地方财政卫生支出的收入弹性为0.54,这表明卫生服务是正常物品,而不是奢侈品,地方政府应加大卫生支出的财政投入。     

Does issuing equity help R&D activity? Evidence from unlisted Italian high-tech manufacturing firms

This paper evaluates the causal effect of issuing equities on the probability that a firm engages in R&D activity. Equity is a better source of external finance than debt for innovation. It does not require collateral, does not exacerbate moral hazard problems connected with the substitution of high-risk for low-risk projects, quite common when using debt, and, unlike debt, does not increase the probability of bankruptcy; equity also allows investors to reap the entire benefit of the returns of successful innovative projects. This paper focuses on high-tech firms for which asymmetric information problems are more pervasive. Implementing an instrumental variable estimation, we find that issuing equity increases the probability that the firm has R&D expenditures by 30–40%. We detect considerable heterogeneity in this effect: the impact of issuing equity is significant only for small, young and more highly leveraged high-tech firms. We also find interesting evidence that issuing equity increases R&D expenditures in relation to sales.     

The diffusion of mobile telephony in Italy and the UK: an empirical investigation

Since its appearance mobile telephony has shown a remarkably fast diffusion pattern in most advanced countries. This paper investigates technological and economic factors that have influenced the diffusion process of cellular phones, in particular the diffusion speed and the upper limit. The epidemic model widely used in diffusion studies is summarised and discussed highlighting the evolutionary disequilibrium nature of diffusion processes. Moreover, the econometric specification of some of the models distinguishes between long-run relationships and short-run adjustments to a continuously evolving pattern. We find that the new digital technology, which coincides with increased competition in both Italy and the UK, has made the process faster and increased the saturation level in Italy, but not in the UK; in Italy only the decreasing price of the handset has affected the diffusion process, whereas we find that, in addition to that, decreasing tariffs and increasing consumption expenditures have been significant in shaping the diffusion process of mobile telephony in the UK.     

Do R&D expenditures matter more than those of marketing to company performance? The moderating role of industry characteristics and investment density

Confronting competitive environment, enterprises differentiate their product by promoting their R&D or marketing capacities. Scholars have verified that there is a direct relationship and a deferred effect between R&D expenditures and firm performance, but that there exists an inconsistency between marketing expenditures and firm performance. However, previous studies have neglected to analyse and compare the impact of corporate R&D and marketing investment on performance, and also ignored the moderating effects of different industry characteristics and investment densities. The study attempts to fill the gap by constructing a model to accommodate all these factors. The empirical results indicate that R&D and marketing expenditures have a positive impact on enterprise operating performance, and that there is a longer deferred effect in R&D expenditures than in marketing expenditures. By investing in R&D expenditures, manufacturing enterprises can increase their performance more than in service enterprises, and electronic enterprises can improve their performance compared with other types of firms. Finally, investments with higher R&D density can result in a higher performance.     

Public financing of health expenditures,insurance, and health outcomes

The effects of public financing of health expenditures, insurance coverage and other factors on health outcomes are examined within health production models estimated using 1960–1992 data across 20 OECD countries. Mortality rates are found to depend on the mix of health care expenditures and the type of health insurance coverage. Increases in the publicly financed share of health expenditures are associated with increases in mortality rates. Increases in inpatient and ambulatory insurance coverage are associated with reduced mortality. The effects of GDP, health expenditures and age structure on mortality are similar to those in previous studies. Tobacco use, alcohol use, fat consumption, female labour force participation, and education levels are also significantly related to overall mortality rates. Increases in income inequality are associated with lower mortality rates, suggesting that the negative relationship between inequality and health outcomes suggested by some previous studies does not remain when a more complete model is estimated. The result that increases in public financing increase mortality rates is robust to a number of changes in specifications and samples. Thus, as countries increase the level of their health expenditures, they may want to avoid increasing the proportion of their expenditures that are publicly financed.     

The flexibility of household electricity demand over time

Empirical estimates of long run effects on residential electricity demand from changes in the electricity price are usually estimated by cross-sectional variation in the current stock of electric household appliances across households at a certain point in time. Here, we use a discrete–continuous approach modeling the long run effects by investments in new appliances. We apply the annual Norwegian Survey of Consumer Expenditure for the period 1975 to 1994 to estimate the short and long run own price elasticities in the two approaches. We find the estimated long run elasticity only slightly more price elastic than the short run. We also find that the long run elasticity does not differ significantly between the two approaches. The reason for both results is that, since there is no alternative source of energy for these appliances, there are no substitution effects.     

Fiscal federalism in rentier regions: Evidence from Russia

When does sub-national fiscal autonomy prompt regional growth and recovery and, under what conditions, does it have adverse effects? We argue that unearned income streams, particularly in the form of revenues from natural resource production or from budgetary transfers from the central government, transform regions dependent on these income sources into rentier regions. Governments in these regions can use local control over revenues and expenditures to shelter certain firms, i.e., natural resource producers or loss-making enterprises, from market forces. Using fiscal data from 80 Russian regions from 1996 to 1999, we test this hypothesis in both cross-sectional and panel specifications. Our results indicate that tax retention, which is a proxy for fiscal autonomy, has had a positive effect on regional reform and investment since the break-up of the Soviet Union. However, we also find that this effect decreases as rentable income streams to regions increase. Journal of Comparative Economics 33 (4) (2005) 814–834.     

An analysis of the determinants of job satisfaction when individuals’ baseline satisfaction levels may differ

A growing literature seeks to explain differences in individuals’ self-reported satisfaction with their jobs. The evidence so far has mainly been based on cross-sectional data and when panel data have been used, individual unobserved heterogeneity has been modelled as an ordered probit model with random effects. This article makes use of longitudinal data for Denmark, taken from the waves 1995–1999 of the European Community Household Panel, and estimates fixed effects ordered logit models using the estimation methods proposed by Ferrer-i-Carbonel and Frijters (2004) and Das and van Soest (1999). For comparison and testing purposes a random effects ordered probit is also estimated. Estimations are carried out separately on the samples of men and women for individuals’ overall satisfaction with the jobs they hold. We find that using the fixed effects approach (that clearly rejects the random effects specification), considerably reduces the number of key explanatory variables. The impact of central economic factors is the same as in previous studies, though. Moreover, the determinants of job satisfaction differ considerably between the genders, in particular once individual fixed effects are allowed for.     

The Impact of Individual Health Account Scheme on Lifetime Income Redistribution: Evidence from China

This paper investigates the effects of a combination of individual health accounts (IHAs) and catastrophic insurance on lifetime income redistribution by examining the variations in end‐of‐life IHA balances and lifetime out‐of‐pocket health expenditures. We exploit longitudinal health expenditure data from 2005 to 2007 in Kunshan City, Jiangsu Province of China. We find a high concentration of low IHA balances at the end of life, with most equal to zero. This finding suggests that most IHA balances are used for health expenditures and that the income redistribution effect through the accumulation of IHA balance is limited. However, the results also show a wide variation in lifetime out‐of‐pocket spending in the form of deductibles and coinsurance, which implies serious inequality in individual financial burden that can lead to a large income redistribution effect.     

The electoral budget cycle on municipal waste collection expenditure

This article analyses the determinants of municipal waste collection expenditure, specifically the effects of electoral cycles on municipal waste collection expenditure. We use a database with information on Spanish municipalities with more than 1000 inhabitants for the period 2002–2011. Our results reveal that incumbents adopt an opportunistic behaviour, increasing spending on waste in the preelection year and reducing it in the election and post-election years. Therefore, we confirm an electoral budget cycle on waste collection expenditures in Spain. Additionally, we find that the levels of income, unemployment and upper-level governments’ transfers have a positive impact on waste collection spending. Finally, population density, level of urbanization, average age of the population of the municipality and less fragmented governments negatively influence waste collection spending.     

The interest elasticity of household savings: a structural approach with German micro data

This paper empirically investigates the effects of changes in the interest rate as well as in the current and expected future consumer price levels on households’ consumption–savings decision. In a structural demand model applied to German consumption data, we use cross-sectional and longitudinal variation in prices and tax rates to construct individual after-tax interest rates and cluster-specific consumer prices. We find that the compensated own-price elasticities for savings as well as consumption are significantly negative, while the theoretical model implications of homogeneity and symmetry must be rejected. Importantly, we estimate the uncompensated interest rate elasticity of savings, in line with the literature, at around zero. Some heterogeneity in this elasticity is found along the savings and wealth distribution. We conclude that short-term policy-induced variation of net returns to savings is expected to have no significant effects on the level of compound savings.     

THE DISTRIBUTIONAL CONSEQUENCES OF GOVERNMENT SPENDING AND TAXATION IN THE U.S., 1989 AND 2000

We assess the effects of government expenditures and taxation on household economic well-being in the United States in 1989 and 2000. Net government expenditure is estimated as the difference between government expenditures incurred on behalf of the household sector—transfers and public consumption—and the taxes paid by that sector. We incorporate the estimates of net government expenditures into a wealth-adjusted measure of income. We find that overall inequality in our income measure is considerably reduced by net government expenditures. Results from decomposition analysis show that the inequality-reducing effect of net government expenditures owed more to expenditures than to taxes.     

Patents,R&;D and lag effects: evidence from flexible methods for count panel data on manufacturing firms

This paper investigates the relationship between patents and research and development expenditures using new longitudinal patent data at the firm level for the U.S. manufacturing sector from 1982 to 1992. The paper also develops a new class of count panel data models based on series expansion of the distribution of individual effects. Estimation results from various distributed lag and dynamic multiplicative panel count data models show that the contemporaneous relationship between patenting and R&D expenditures continues to be strong, accounting for over 60% of the total R&D elasticity. The lag effects are higher than have previously been found for the 1970s data. We would like to thank Chris Bollinger, Bronwyn Hall and Paula Stephan for useful comments on the previous version of the paper. Earlier versions were presented at the 11th International Conference on Panel Data, Texas A&M University, the Midwest Econometrics Group Meeting, and the Annual Conference of the Southern Economic Association.     

Public sector pay and corruption: Measuring bribery from micro data

This study provides the first systematic measure of bribery using micro-level data on reported earnings, household spending and asset holdings. We use the compensating differential framework and the estimated sectoral gap in reported earnings and expenditures to identify the size of unobserved (unofficial) compensation (i.e., bribes) of public sector employees. In the case of Ukraine, we find that public sector employees receive 24–32% less wages than their private sector counterparts. The gap is particularly large at the top of the wage distribution. At the same time, workers in both sectors have essentially identical level of consumer expenditures and asset holdings that unambiguously indicate the presence of non-reported compensation in the public sector. Using the conditions of labor market equilibrium, we develop an aggregate measure of bribery and find that the lower bound estimate of the extent of bribery in Ukraine is between 460 million and 580 million U.S. dollars (0.9–1.2% of Ukraine's GDP in 2003).     

Local public good provision: Voting,peer effects,and mobility

Few empirical strategies have been developed that investigate public provision under majority rule while taking explicit account of the constraints implied by mobility of households. The goal of this paper is to improve our understanding of voting in local communities when neighborhood quality depends on peer or neighborhood effects. We develop a new empirical approach which allows us to impose all restrictions that arise from locational equilibrium models with myopic voting simultaneously on the data generating process. We can then analyze how close myopic models come in replicating the main regularities about expenditures, taxes, sorting by income and housing observed in the data. We find that a myopic voting model that incorporates peer effects fits all dimensions of the data reasonably well.