External refereed essays

Utilisation of Dental Services by Refugees in Germany: Results of the Population-Based RESPOND Survey

Background: The utilisation of outpatient dental services is an important indicator for monitoring healthcare provision in Germany. In the general population, the 12-month prevalence of dental service utilization is 82.2%. For refugees, this indicator has hardly been measured, although studies suggest an objectively high need for dental care. Methodology: As part of the population-based cross-sectional ...

Inanspruchnahme zahnmedizinischer Leistungen bei geflüchteten Menschen in Deutschland: Ergebnisse des bevölkerungsbezogenen Surveys RESPOND

Hintergrund: Die Inanspruchnahme ambulanter zahnmedizinischer Leistungen ist ein wichtiger Indikator für die Beschreibung der gesundheitlichen Versorgung in Deutschland. In der Allgemeinbevölkerung liegt die 12-Monats-Prävalenz der Nutzung zahnmedizinischer Leistungen im Schnitt bei 82,2 %. Für geflüchtete Menschen wurde der Indikator bisher kaum erhoben, obwohl Studien einen objektiv hohen Versorgungsbedarf ...

To Diversify or Not? The Link between Global Sourcing of ICT Goods And Firm Performance

We analyse variation in firm performance as a function of the international diversification of ICT imports by firms. Drawing on administrative data from 2010 and 2014 on nearly 4000 German manufacturing firms, we find that firms with ICT sourcing that is diversified across multiple countries perform better than similar, less-diversified firms. This finding holds true for two performance metrics (value ...

Equipping the Offline Population with Internet Access in an Online Panel: Does It Make a Difference?

Online panel surveys are often criticized for their inability to cover the offline population, potentially resulting in coverage error. Previous research has demonstrated that non-internet users in fact differ from online individuals on several sociodemographic characteristics. In attempts to reduce coverage error due to missing the offline population, several probability-based online panels equip ...

Testing Marx: Capital Accumulation, Income Inequality, and Socialism in Late Nineteenth-Century Germany

We study the dynamics of capital accumulation, income inequality, capital concentration, and voting up to 1914. Based on new panel data for Prussian regions, we re-evaluate the famous Revisionism Debate between orthodox Marxists and their critics. We show that changes in capital accumulation led to a rise in the capital share and income inequality, as predicted by orthodox Marxists. But against their ...

The Long Reach of Class Origin on Financial Investments and Net Worth

In this study, we argue that parents’ class position may influence the type and timing of their offspring's investments in financial assets. These investments may facilitate net worth accumulation beyond direct transfers, contributing to the intergenerational reproduction of social positions. We test these expectations using retrospective life history and prospective panel data for 14 countries from ...

Chronic Disease Onset and Wellbeing Development: Longitudinal Analysis and the Role of Healthcare Access

Background Experiencing the onset of a chronic disease is a serious health event impacting living conditions and wellbeing. Investigating wellbeing development and its predictors is crucial to understand how individuals adapt to chronic illnesses. This study (i) analyzed the impact of a chronic disease on wellbeing development, and (ii) explored spatial healthcare access as potential moderating factor. ...

Cohort Profile: Genetic Data in the German Socio-Economic Panel Innovation Sample (SOEP-G)

The German Socio-Economic Panel (SOEP) serves a global research community by providing representative annual longitudinal data of respondents living in private households in Germany. The dataset offers a valuable life course panorama, encompassing living conditions, socioeconomic status, familial connections, personality traits, values, preferences, health, and well-being. To amplify research opportunities ...

First Time around: Local Conditions and Multi-dimensional Integration of Refugees

We study the effect of local unemployment and attitudes towards immigrants at the time of arrival on refugees’ multi-dimensional integration outcomes. We leverage a centralized allocation policy in Germany where refugees were centrally assigned to live in specific counties. To measure sentiments of native residents towards immigrants, we use geo-coded Twitter data, which provides our “negative sentiment ...

Context, Health and Migration: A Systematic Review of Natural Experiments

Summary : Background Migration health research pays little attention to the places into which people migrate. Studies on health effects of contextual factors are often limited because of the ability of individuals to self-select their environment, but natural experiments may allow for the causal effect of contexts to be examined. The objective was to synthesise the evidence on contextual health effects ...

Effect of Area-Level Socioeconomic Deprivation on Mental and Physical Health: A Longitudinal Natural Experiment among Refugees in Germany

Existing studies on contextual health effects struggle to account for compositional bias, limiting causal interpretation. We use refugee dispersal in Germany as a natural experiment to study the effect of area-level socioeconomic deprivation on mental and physical health, while considering the potential mediating role of neighbourhood characteristics. Refugees subject to dispersal (n = 1466) are selected ...

Parents' Life Satisfaction Prior to and Following Preterm Birth

The current study tested whether the reported lower wellbeing of parents after preterm birth, relative to term birth, is a continuation of a pre-existing difference before pregnancy. Parents from Germany (the German Socio-Economic Panel Study, N = 10,649) and the United Kingdom (British Household Panel Study and Understanding Society, N = 11,012) reported their new-born’s birthweight and gestational ...

Gravity Models for Potential Spatial Healthcare Access Measurement: a Systematic Methodological Review

Background Quantifying spatial access to care—the interplay of accessibility and availability—is vital for healthcare planning and understanding implications of services (mal-)distribution. A plethora of methods aims to measure potential spatial access to healthcare services. The current study conducts a systematic review to identify and assess gravity model-type methods for spatial healthcare access ...

Stabilized Benders Decomposition for Energy Planning under Climate Uncertainty

The Long Way to Tax Transparency: Lessons from the Early Publishers of Country-by-Country Reports

In this paper, we analyse a sample of voluntarily published country-by-country reports (CbCRs) of 35 multinational enterprises (MNEs). We assess the value added and the limitations of qualitative and quantitative information provided in the reports based on a comparison to individual MNEs’ annual financial reports and aggregate CbCR data provided by the OECD. In terms of data quality, we find that ...

The Macroeconomic Impact of Increasing Investments in Malaria Control in 26 High Malaria Burden Countries: An Application of the Updated EPIC Model

Background Malaria remains a major public health problem. While globally malaria mortality affects predominantly young children, clinical malaria affects all age groups throughout life. Malaria not only threatens health but also child education and adult productivity while burdening government budgets and economic development. Increased investments in malaria control can contribute to reduce this burden ...

Indien: eine Alternative zu China?

Die Spannungen in der Weltwirtschaft und die Sorge um eine zu starke wirtschaftliche Abhängigkeit Europas von China rücken Indien in den Blickpunkt. Dort leben knapp 18 % der Weltbevölkerung in einer demokratischen Staatsform. Allerdings beträgt die Größe des Marktes bestenfalls ein Fünftel des chinesischen und die Demokratie wird – nach europäischem Verständnis – schwächer. Dennoch bietet die indische ...

Global Risk and the Dollar

The dollar is a safe-haven currency and appreciates when global risk goes up. We investigate the dollar’s role for the transmission of global risk to the world economy within a Bayesian proxy structural vector autoregressive model. We identify global risk shocks using high-frequency asset-price surprises around narratively selected events. Global risk shocks appreciate the dollar, induce tighter global ...

A Linear Reduced-Order Model for the Activated Sludge Process for the Integration into a Mixed-Integer Linear Energy System Optimisation Model

Conventional wastewater treatment plants consume significant amounts of electricity. The constant aeration of the wastewater in order to foster the growth of microorganisms or the pumping of wastewater are two examples for energy-intensive processes within a plant. Case studies have shown that switching off blowers and inlet pumps for a certain period of time is possible without a loss in water quality. ...

The Internationalisation of R&D: Past, Present and Future

In this perspective paper we discuss major trends that will shape the internationalisation of business R&D in the future. New scientific discoveries will provide new opportunities to innovate; the growing scientific capabilities in emerging economies will create new hot spots for relevant knowledge; new research activities will emerge from the need to combat climate change; digital technologies including ...