RWI – Leibniz Institute for Economic Research

This article presents a meta‐analysis of recent microeconometric evaluations of active labour market policies. We categorise 199 programme impacts from 97 studies conducted between 1995 and 2007. Job search assistance programmes yield relatively favourable programme impacts, whereas public sector employment programmes are less effective. Training programmes are associated with positive medium‐term impacts, although in the short term they often appear ineffective. We also find that the outcome variable used to measure programme impact matters, but neither the publication status of a study nor the use of a randomised design is related to the sign or significance of the programme estimate.

Abstract While both fundamental types of abatement measure mitigate the adverse environmental impacts of production, cleaner production technologies are frequently more advantageous than end‐of‐pipe technologies for environmental and economic reasons. This paper analyzes a variety of factors that might enhance firms' propensity to implement cleaner production technologies instead of end‐of‐pipe technologies. On the basis of a unique facility‐level data set derived from a recent OECD survey, we find a clear dominance of cleaner production in seven OECD countries: 76.8% of the facilities report that they invest predominantly in cleaner production technologies, above all in new production processes, but not so much in new products. Based on a discrete choice model, our estimation results indicate that regulatory measures and the stringency of environmental policies are more important for end‐of‐pipe technologies, while cost savings, general management systems and specific environmental management tools tend to favor clean production. We conclude that improvements towards cleaner production may be reached by the continuous development and wider diffusion of these management tools. Improvements may also be stimulated by widening the cost gap between the two types of technology, for instance by additionally charging for waste and energy use. Copyright © 2006 John Wiley & Sons, Ltd and ERP Environment.

Money Does Matter! Evidence from Increasing Real Income and Life Satisfaction in East Germany Following Reunification by Paul Frijters, John P. Haisken-DeNew and Michael A. Shields. Published in volume 94, issue 3, pages 730-740 of American Economic Review, June 2004

In this study we introduce a new indicator for private consumption based on search query time series provided by Google Trends. The indicator is based on factors extracted from consumption-related search categories of the Google Trends application Insights for Search. The forecasting performance of the new indicator is assessed relative to the two most common survey-based indicators: the University of Michigan Consumer Sentiment Index and the Conference Board Consumer Confidence Index. The results show that in almost all conducted in-sample and out-of-sample forecasting experiments the Google indicator outperforms the survey-based indicators. This suggests that incorporating information from Google Trends may offer significant benefits to forecasters of private consumption. Copyright © 2011 John Wiley & Sons, Ltd.

This article examines the impact of unemployment for men and women on life satisfaction for Germany 1991-2006 using the German Socio-Economic Panel. We find that for women in east and west Germany, company closures in the year of entry into unemployment produce strongly negative effects on life satisfaction over and above an overall effect of unemployment, providing "prima facie" evidence of reduced outside work options, large investments in firm-specific human capital or a family constraint. The large compensating variation in terms of income indicates enormous non-pecuniary negative effects for women of exogenous entry unemployment due to company closures. Copyright © The Author(s). Journal compilation © Royal Economic Society 2009.

The spread of fake news and misinformation on social media is blamed as a primary cause of vaccine hesitancy, which is one of the major threats to global health, according to the World Health Organization. This paper studies the effect of the diffusion of misinformation on immunization rates in Italy by exploiting a quasi-experiment that occurred in 2012, when the Court of Rimini officially recognized a causal link between the measles-mumps-rubella vaccine and autism and awarded injury compensation. To this end, we exploit the virality of misinformation following the 2012 Italian court's ruling, along with the intensity of exposure to nontraditional media driven by regional infrastructural differences in Internet broadband coverage. Using a Difference-in-Differences regression on regional panel data, we show that the spread of this news resulted in a decrease in child immunization rates for all types of vaccines.

Do hospitals experience safety tipping points as utilization increases, and if so, what are the implications for hospital operations management? We argue that safety tipping points occur when managerial escalation policies are exhausted and workload variability buffers are depleted. Front-line clinical staff is forced to ration resources and, at the same time, becomes more error prone as a result of elevated stress hormone levels. We confirm the existence of safety tipping points for in-hospital mortality using the discharge records of 82,280 patients across six high-mortality-risk conditions from 256 clinical departments of 83 German hospitals. Focusing on survival during the first seven days following admission, we estimate a mortality tipping point at an occupancy level of 92.5%. Among the 17% of patients in our sample who experienced occupancy above the tipping point during the first seven days of their hospital stay, high occupancy accounted for one in seven deaths. The existence of a safety tipping point has important implications for hospital management. First, flexible capacity expansion is more cost-effective for safety improvement than rigid capacity, because it will only be used when occupancy reaches the tipping point. In the context of our sample, flexible staffing saves more than 40% of the cost of a fully staffed capacity expansion, while achieving the same reduction in mortality. Second, reducing the variability of demand by pooling capacity in hospital clusters can greatly increase safety in a hospital system, because it reduces the likelihood that a patient will experience occupancy levels beyond the tipping point. Pooling the capacity of nearby hospitals in our sample reduces the number of deaths due to high occupancy by 34%. This paper was accepted by Serguei Netessine, operations management.

In this article, a general Blinder–Oaxaca decomposition for nonlinear models is derived, which allows the difference in an outcome variable between two groups to be decomposed into several components. We show how, using nldecompose, this general decomposition can be applied to different models with discrete and limited dependent variables. We further demonstrate how the standard errors of the estimated components can be calculated by using Stata's bootstrap command as a prefix.

Leitlinienprogramm Onkologie der Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften e. V. (AWMF), Deutschen Krebsgesellschaft e. V. und Deutschen Krebshilfe

In 2003 the Government of Ghana established a National Health Insurance Scheme (NHIS) to improve health-care access for Ghanaians and eventually replace the cash-and-carry system. This study evaluates an important aspect of its promise in the context of the Millennium Development Goals #4 and #5 which deal with the health of women and children. We use Propensity Score Matching techniques to balance the relevant background characteristics in our survey data and compare health indicators of recent mothers who are enrolled in the NHIS with those who are not. Our findings suggest that NHIS women are more likely to receive prenatal care, deliver at a hospital, have their deliveries attended by trained health professionals, and experience less birth complications. We conclude that NHIS is an effective tool for improving health outcomes among those who are covered, which should encourage the Ghanaian government to promote further enrollment, in particular among the poor.

Importance: The World Health Organization is developing a global strategy to eliminate cervical cancer, with goals for screening prevalence among women aged 30 through 49 years. However, evidence on prevalence levels of cervical cancer screening in low- and middle-income countries (LMICs) is sparse. Objective: To determine lifetime cervical cancer screening prevalence in LMICs and its variation across and within world regions and countries. Design, Setting, and Participants: Analysis of cross-sectional nationally representative household surveys carried out in 55 LMICs from 2005 through 2018. The median response rate across surveys was 93.8% (range, 64.0%-99.3%). The population-based sample consisted of 1 136 289 women aged 15 years or older, of whom 6885 (0.6%) had missing information for the survey question on cervical cancer screening. Exposures: World region, country; countries' economic, social, and health system characteristics; and individuals' sociodemographic characteristics. Main Outcomes and Measures: Self-report of having ever had a screening test for cervical cancer. Results: Of the 1 129 404 women included in the analysis, 542 475 were aged 30 through 49 years. A country-level median of 43.6% (interquartile range [IQR], 13.9%-77.3%; range, 0.3%-97.4%) of women aged 30 through 49 years self-reported to have ever been screened, with countries in Latin America and the Caribbean having the highest prevalence (country-level median, 84.6%; IQR, 65.7%-91.1%; range, 11.7%-97.4%) and those in sub-Saharan Africa the lowest prevalence (country-level median, 16.9%; IQR, 3.7%-31.0%; range, 0.9%-50.8%). There was large variation in the self-reported lifetime prevalence of cervical cancer screening among countries within regions and among countries with similar levels of per capita gross domestic product and total health expenditure. Within countries, women who lived in rural areas, had low educational attainment, or had low household wealth were generally least likely to self-report ever having been screened. Conclusions and Relevance: In this cross-sectional study of data collected in 55 low- and middle-income countries from 2005 through 2018, there was wide variation between countries in the self-reported lifetime prevalence of cervical cancer screening. However, the median prevalence was only 44%, supporting the need to increase the rate of screening.

Summary The paper assesses the heterogeneity of treatment effects arising from variation in the duration of training. We use German administrative data that have the extraordinary feature that the amount of treatment varies continuously from 10 days to 395 days (i.e. 13 months). This feature allows us to estimate a continuous dose–response function that relates each value of the dose, i.e. days of training, to the individual post-treatment probability of employment (the response). The dose–response function is estimated after adjusting for covariate imbalance by using the generalized propensity score, which is a recently developed method for covariate adjustment under continuous treatment regimes. Our data have the advantage that we can consider both the actual and the planned durations of training as treatment variables: if only actual durations are observed, treatment effect estimates may be biased because of endogenous exits. Our results indicate an increasing dose–response function for treatments of up to 120 days, which then flattens out, i.e. longer training programmes do not seem to add an additional treatment effect.

The investment requirements to achieve the United Nations’ universal electricity access goal by 2030 are estimated at 640 billion USD. The assumption underlying this goal is that electrification contributes to poverty alleviation in many regards. In recent years, a body of literature has emerged that widely confirms this positive poverty impact assumption. Most of these studies, however, are based on data from Asia and Latin America. This paper challenges the transferability of impact findings in the literature to the African context. Using a unique data set collected in various African countries, the paper suggests that impact expectations on income, education and health should be discounted considerably for Africa. In many cases, the low levels of electricity consumption can also be served by low-cost solar alternatives. To ensure cost-effective usage of public investments in rural electrification, we call for careful cost-benefit comparisons of on-grid and off-grid solutions.

Demand-side policies for mitigating climate change based on behavioral insights are gaining increased attention in research and practice. Here we describe a systematic map that catalogues existing research on behaviorally informed interventions targeting changes in consumer food consumption and food waste behavior. The purpose is to gain an overview of research foci and gaps, providing an evidence base for deeper analysis. In terms of food consumption, we focus on animal protein (meat, fish, dairy, and eggs) and its substitutes. The map follows the standards for evidence synthesis from the Collaboration for Environmental Evidence (CEE) as well as the RepOrting Standards for Systematic Evidence Syntheses (ROSES). We identified 49 articles including 56 separate studies, as well as 18 literature reviews. We find a variety of study designs with a focus on canteen and restaurant studies as well as a steep increase of publications since 2016. We create an interactive evidence atlas that plots these studies across geographical space. Here, we find a concentration of research in the Anglo-Saxon world. Most studies follow multi-intervention designs and focus on actual food consumption behavior, fewer on food waste behavior. We identify knowledge clusters amenable for a systematic review focusing on the effectiveness of these interventions, namely: priming, disclosure, defaults, social norms, micro-environment changes, and ease of use. The systematic map highlights knowledge gaps, where more primary research is needed and evidence cannot support policy; it identifies knowledge clusters, where sufficient studies exist but there is a lack of clarity over effectiveness, and so full synthesis can be conducted rapidly; finally, it reveals patterns in research methods that can highlight best practices and issues with methodology that can support the improvement of primary evidence production and mitigation of research waste. To the best of our knowledge, this is the first systematic study mapping this specific area.

Abstract This paper describes an econometric assessment of wine market prices for 21 of the Crus Classés châteaux in the Bordeaux region of France. The model developed in the analysis attempts to define the relationship between factors that influence wine quality and those that influence wine prices. Characteristics of the models are: (1) climate influences on grape composition (acid and sugar levels), (2) grape composition influences on market prices, (3) subjective quality evaluations (Parker‐points) on market prices, and (4) the effects of age of the wine on market prices. The results indicate that composition levels of Merlot‐dominated wines are more climate sensitive than those from Cabernet Sauvignon‐dominated wines. Overall, warm, dry summers result in high sugar and low acid levels at harvest which in turn lead to higher quality wines. Wine market price sensitivity to Parker‐point ratings indicates that properties with high Cabernet Sauvignon‐dominated wines are highly dependent on the external ratings while Merlot‐dominated wines have a decreased rating sensitivity. Smaller properties tend to gain over proportionally from high ratings indicating great jumps in price from year to year. Additionally, châteaux that have experienced high ratings for past vintages exhibit great sensitivity to point steps in ratings for current vintages. Aging has a positive effect on Bordeaux wine pricing. This is due to the increasing maturity as well as the increasing absolute scarcity. Absolute scarcity of product is expressed by the size of the property, with small properties producing less per vintage and therefore having less in the market. Additionally, Merlot‐dominated wines exhibit more maturing potential and profit more from aging than Cabernet Sauvignon‐dominated wines. Average per château real annual profit ranges from 1 to 10%. High levels of grape ripeness, absolute scarcity, and smaller properties that are dominated by Merlot in their blend lead to the highest profits. Forecasts for a vintage not yet on the market indicates that 1995 is better than 1994 for both Cabernet Sauvignon and Merlot‐dominated wines, but that 1996 and 1997 are not as good as 1995, especially for Merlot‐dominated wines.

During the past two decades, interdisciplinary oriented entrepreneurship research focused increasingly on spatial aspects of entrepreneurial activities and support policies. This paper takes stock of central themes in entrepreneurship research at and across different geographic scales, the preferred sources of data and information as well as methodological approaches. It sets out to discuss the shifting interest of research over time and to sketch out theoretical and methodological challenges for further research. This paper is based on a review of 18 international journals in small business and entrepreneurship research, economic geography, regional economics and neighbouring sciences for the period 1990–2007. Altogether, 348 relevant articles were identified, read and classified. The analysis reveals that the entrepreneur's socio-spatial contexts in which they operate on a daily basis are still absent from much of the entrepreneurship debate. We suggest intensifying research efforts on the linkage between entrepreneurial activities and localities in order to reach a better understanding of the everydayness of entrepreneurship.

When you really get down to analysing it, the promises of E-Learning often have yet to materialize. The question how e-learning can be successful becomes more urgent as we move from an ‘early adopter’ stage to a more general offering. In the discussion about the best strategy for e-learning it becomes more and more clear that e-learning has to be based on the learner. This includes the necessity to postulate in a clear way that the needs of the learners have to be determined in a concrete manner before starting the project. Important aspects are therefore the awareness of the learning biography, of individual learning preferences and of social needs.It is important to acknowledge that quality of a learning process is not something that is delivered to a learner by an e-learning provider but rather constitutes a process of co-production between the learner and the learning-environment. That means that the product/ outcome of an educational process is not exclusively a result of the production process of an educational institution. Quality therefore has to do with empowering and enabling the learner. It has to be defined at the final position of the provision of the learning-services : the learner. The article describes learners preferences in e-learning based on empirical results of today’s largest survey in this field1 [1]. It thus facilitates the construction of learner oriented services portfolios in e-learning. First publication : http://www.eurodl.org/materials/contrib/2004/Online_Master_COPs.html

Abstract Russians reported large changes in their life satisfaction over the post‐transition years. In this paper, we explore the factors that drove these changes, focusing on exogenous income changes, using panel data from the Russian Longitudinal Monitoring Survey over the period 1995 to 2001 and implementing a recently developed ordinal fixed‐effects estimator. We apply a causal decomposition technique that allows for bias arising from panel attrition when establishing aggregate trends in life satisfaction. Changes in real household incomes explained 10% of the total change in reported life satisfaction between 1996 and 2000, but up to 30% of some year‐on‐year changes.

This paper investigates gender differences in smoking behavior using data from the German Socio-economic Panel (SOEP). We develop a Blinder-Oaxaca decomposition method for count data models, which allows to isolate the part of the gender differential in the number of cigarettes daily smoked that can be explained by differences in observable characteristics from the part attributable to differences in coefficients. Our results reveal that the major part of the gender smoking differential is attributable to differences in coefficients indicating substantial differences in the smoking behavior between men and women.

OBJECTIVE: To evaluate the correlation between age, gender, and body mass index as they relate to sacroiliac joint pathology diagnosed by dual comparative local anesthetic blocks. DESIGN: This was a retrospective review of patients at a university spine center from August 2001 until August 2004. RESULTS: One hundred fifty-eight patients underwent sacroiliac joint (SIJ) injections with average symptom duration of 34.0 mos. Of those patients, 26.6% were found to have SIJ pain by dual injections. The average age of this group was 53.3 yrs old; for those who had negative injections, it was 46.8 yrs old (P = 0.0025). The body mass indexes for the positive and negative SIJ pain groups were 30.2 and 29.3 kg/m2 (P = 0.40), respectively. The gender makeup of the positive and negative groups showed 64.3% female and 62.1% female (P = 0.85), respectively. Smoking tobacco status was not statistically significant between the two groups, with 29.6% of smokers having a positive block and 26.1% having a negative block (P = 0.35). CONCLUSIONS: Our results suggest an age difference for those patients who have SIJ pain. These patients tend to be older than those without. Gender, age, and smoking status were not found to correlate with SIJ pathology.