Small Area Estimation for Disease Prevalence Mapping

Small area estimation (SAE) entails estimating characteristics of interest for domains, often geographical areas, in which there may be few or no samples available. SAE has a long history and a wide variety of methods have been suggested, from a bewildering range of philosophical standpoints. We describe design-based and model-based approaches and models that are specified at the area level and at the unit level, focusing on health applications and fully Bayesian spatial models. The use of auxiliary information is a key ingredient for successful inference when response data are sparse, and we discuss a number of approaches that allow the inclusion of covariate data. SAE for HIV prevalence, using data collected from a Demographic Health Survey in Malawi in 2015–2016, is used to illustrate a number of techniques. The potential use of SAE techniques for outcomes related to coronavirus disease 2019 is discussed.     

Aid econometrics: Lessons from a stochastic growth model

This paper evaluates the standard empirical methods employed in the study of foreign aid, when the data generating process is a calibrated stochastic growth model in which aid recipients make optimal investment and consumption decisions. When recipients receive a stochastic flow of aid and wish to smooth consumption, standard methods fail to distinguish between the response to transient and permanent aid shocks, and hence yield misleading results concerning the object of interest to policy makers: the long-run impact of aid.     

全球经济危机对我国进出口贸易的影响——基于多参数平滑法的定量分析

选取2000-2010年我国进出口的月度数据,运用多参数平滑方法,分析了全球经济危机对我国进出口贸易的影响。定量分析显示全球经济危机使我国2009年和2010年对外出口规模减少额超过10000亿美元,进口规模减少额超过6000亿美元,影响十分巨大,危机开始时对一般贸易的影响超过对进出口的整体影响。随着我国政府实施扩张性的财政政策和货币政策的效果逐渐显现,世界经济逐步回暖,全球经济危机对我国进出口的影响逐渐减少。进一步的研究显示:危机使得我国对欧盟进出口的影响超过了对美国进出口的影响;对欧美地区出口的影响超过进口的影响;对我国不同地区进出口的影响是从东到西影响强度逐步减弱,对外开放程度越高的地区受到的影响越显著,能够充分发挥比较优势的产品或行业受到全球经济危机负面影响的程度较小。     

云南省城镇居民消费与收入关系的非参数回归分析

近二十多年来,非参数统计的方法已广泛应用于计量经济学的研究。由于不需要预先确定变量间的函数关系,对计量经济模型的估计和预测提供了多方面和灵活机动的表现形式。本文尝试将非参数估计理论引入到回归模型中,通过建立非参数回归模型及普通的线性回归模型对云南省城镇居民可支配收入及消费之间的关系进行比较研究。     

The Debt‐Payment‐to‐Income Ratio as an Indicator of Borrowing Constraints: Evidence from Two Household Surveys

Liquidity constraints have been proposed as an important explanation for deviations from the rational expectations/permanent income hypothesis. This paper introduces to the liquidity constraint literature the ratio of a household's debt payments to its disposable personal income, the debt service ratio (DSR). We find that a household with a high DSR is significantly more likely to be turned down for credit than other households. Also, the consumption growth of likely constrained households, identified using the DSR along with the liquid‐asset‐to‐income ratio, is significantly more sensitive to past income than that of other households, confirming the DSR's value in identifying constrained households.     

Consumption smoothing in Russia1

Using a panel from the Russian Longitudinal Monitoring Survey (1994–2004), this paper investigates to what extent Russian households have been able to maintain their living standards while suffering income shocks. Consumption smoothing is modelled by means of an equilibrium correction mechanism, which disentangles short‐run dynamics and long‐run equilibrium adjustments. GMM estimation is used to control for individual household effects in the presence of dynamics. Additionally, we differentiate between food and non‐food consumption, positive and negative shocks, rural and urban areas, and several levels of poverty risk. We find that dynamics are important in the consumption equation, and that estimates are sensitive to imputation errors in home food production. No strong claims can be made regarding heterogeneity in smoothing behaviour.     

Economic Consequences of the Cancellation of Inner Reserves for Hong Kong Banks

Inner reserves, which allow banks to report a higher or lower earnings at managerial discretion, bring into focus the ability of the market to make an informed judgment of banks' performance. This study examines the market response to the disclosure and elimination of inner reserves by Hong Kong banks resulting from a change in the regulatory reporting system. Test results show that despite a significant increase in the variability of bank earnings in the post-compared to the pre-disclosure period, there is no evidence of a significant increase in banks' systematic risk in the post-disclosure period. Earnings-returns association is significantly stronger in the post- than in the pre-disclosure period, indicating an improvement in the value relevance of reported earnings. Disclosure of inner reserve transfer is found to provide incremental information over reported earnings over a short disclosure window. These results suggest that the increased value relevance of earnings outweighs the costs of inner reserve cancellation, thus supporting greater reporting transparency for Hong Kong banks.     

Earnings and capital management and signaling: the use of loan-loss provisions by European banks

This paper investigates the relationship between loan-loss provisions (LLPs) and earnings management in the context of the capital adequacy of Euro Area (EA) banks versus non-EA credit institutions. This paper also examines whether LLPs signal managements’ expectations concerning future bank profits to investors. Additionally, this paper traces the role of bank regulations and creditor protection systems in explaining income smoothing. Evidence drawn from the 1996 to 2006 period indicates that LLPs do reflect changes in the expected quality of a bank's loan portfolio for both groups of banks, and that earnings management is an important determinant of LLPs for EA intermediaries, whereas non-EA credit institutions use LLPs to signal private information to outsiders. The paper also finds that higher protection of creditors’ rights significantly reduces the incentives to smooth earnings for EA banks. During the recent financial crisis, EA bank managers are much more concerned with their credit portfolio quality and do not use LLPs for discretionary purposes, whereas LLPs at non-EA banks are used to smooth income more than for the purposes of managing capital ratios or conveying private information about future performance to the market.     

Monetary policy inertia reconsidered: Evidence from endogenous interest rate trajectory

By finding small forecastable variability of future policy rates by highly smoothed central bank's endogenous interest rate trajectory, I suggest that market's failure to predict large portion of variability in future rates does not always imply limited policy inertia.     

Income smoothing from a Census X-12 perspective

Corporate income smoothing has been the focus of much attention, yet relatively little is known about the key characteristics of income-smoothing firms. To address this issue, the current study uses quarterly data with Census X-12 analysis in a novel way to identify firms where the degree of random variability in earnings is less than the degree of random variability in sales (EVAR < SVAR). Prior research views such firms as effective smoothers, since most firms have scale-free variability profiles in the opposite direction (EVAR > SVAR). Large-sample US results identify these exceptions throughout a broad cross section of firms, but smaller and less profitable firms tended to have a higher incidence rate. Results also indicate that effective smoothers exhibited higher earnings persistence.