1 Department of Medical Laboratory Sciences, College of Medicine and Health Sciences, Wollo University, Dessie, Ethiopia. 2 Department of Medical Laboratory Sciences, School of Allied Sciences, College of Health Sciences, Addis Ababa University, Addis Ababa, Ethiopia. 3 Department of Medical Microbiology, College of Medicine and Health Sciences, School of Biomedical and Laboratory Sciences, Uni...

We examine the efficiency of using individual stocks or portfolios as base assets to test asset pricing models using cross-sectional data. The literature has argued that creating portfolios reduces idiosyncratic volatility and allows more precise estimates of factor loadings, and consequently risk premia. We show analytically and empirically that smaller standard errors of portfolio beta estima...

We explore the significance of intra-couple and intra -household influences on three broad types of employment contracts: self-employment, performance related pay, and salaried employment. Individuals may pool income risk with their partners by holding a diversified portfolio of employment contracts, introducing intra-household risk pooling. Alternatively, employment contract matching may occur...

We investigate whether individuals’ risk preferences change after experiencing a natural disaster– specifically, the Great East Japan Earthquake in 2011. The novelty of our study is that we use panels of nationally representative surveys, and thus, we can track the changes in risk preferences of the same individuals. We find that people who experienced greater intensity of the Earthquake become...

OBJECTIVES The aim of this study was to investigate whether reported prevalence of experienced threats, real acts of violence and debilitating fear of violence among Norwegian doctors have increased over the last two decades. DESIGN Repeated cross-sectional survey. SETTING All healthcare levels and medical specialties in Norway. PARTICIPANTS Representative samples of Norwegian doctors in ...

Micro and small enterprises (MSEs) in developing countries are typically considered to be severely credit constrained. Additionally, high business risks may partly explain why capital stocks of MSEs remain low. This article analyzes the determinants of capital stocks of MSEs in poor economies focusing on credit constraints and risk. The analysis is based on a unique, albeit cross-sectional but ...

This paper uses a simple empirical approach to estimate vulnerability to food inadequacy using a cross-section data from the 2001 Timor-Leste Living Standard Measurement Survey. This measurement is based on the assumption that households are exposed to the same kind of shock. We find that the distribution of vulnerability to food inadequacy over education of household head is more significant t...

In this paper, I build a model where financial intermediation slows the flow of capital. Investors optimally learn from intermediary performance to allocate capital toward profitable intermediaries. Intermediaries reach for yield, i.e invest in high tail risk assets, in an attempt to drive flows and reduce liquidation risk. Reaching for yield is stronger among intermediaries with weak opportuni...

abstract background: previous studies have indicated an unspecific correlation between noise exposure and blood pressure disturbances. blood pressure disturbances could be caused by the environmental hazards such as noise exposure. the aim of this study is to analyze whether there is a relationship between noise exposure and hypertension. methods: atotal sample of 218 workers working in a small...

The situation of a limited availability of historical data is frequently encountered in portfolio risk estimation, especially in credit risk estimation. This makes it, for example, difficult to find temporal structures with statistical significance in the data on the single asset level. By contrast, there is often a broader availability of cross-sectional data, i.e., a large number of assets in...