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1.
Hahn [Hahn, J. (1998). On the role of the propensity score in efficient semiparametric estimation of average treatment effects. Econometrica 66:315-331] derived the semiparametric efficiency bounds for estimating the average treatment effect (ATE) and the average treatment effect on the treated (ATET). The variance of ATET depends on whether the propensity score is known or unknown. Hahn attributes this to “dimension reduction.” In this paper, an alternative explanation is given: Knowledge of the propensity score improves upon the estimation of the distribution of the confounding variables. 相似文献
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Markus Hassler 《全球网;跨国事务杂志》2003,3(4):513-531
The global organization of the clothing industry has been the prime example of buyer‐driven commodity chains. However, previous empirical studies to substantiate Gereffi's assertion have been highly Western centric and predominantly based on the empirical evidence of American retailers and brand name companies. In this article I demonstrate that any clothing commodity chain has various influential factors, such as the national and global regulatory framework, the societal context of the leading firm, the fashion context of the products, as well as the actual brand ownership. Thus, the organization of clothing firms in the global economy can develop diverse intra‐sectoral commodity chain coordinations. Using a hypothetical clothing commodity chain as an example, I attempt to identify the individual commodity chains within which Indonesian clothing firms are embedded. Furthermore, I outline the ways in which Indonesian clothing firms were affected by the economic crisis of the late 1990s. 相似文献
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5he purpose of this study was to determine whether or not suspected variables affected a surgery clerk's chances of being awarded an honor rating. Findings indicated a significant relationship between a student receiving an honor rating and his or her preceptor's predetermined level of student advocacy, the number of completed patient interview and physical examination write-ups, and final examination scores. There was no significant relationship found between honor ratings and the preceptor's status, the sequence in which the student was discussed or the length of time spent discussing the student at the final evaluation meeting, or the number of clinical faculty present at the meeting. These results lend support to the faculty forum evaluation approach, but suggest a need for further scrutiny of some influencing variables to ensure all students are fairly considered and honor ratings judiciously awarded. 相似文献
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Fink Matthias Hatak Isabella Scholz Markus Down Simon 《Review of Managerial Science》2020,14(2):335-343
Review of Managerial Science - Third-party funding of academic research has grown rapidly in its scope and impact. However, several forces demand greater attention to potential opportunities,... 相似文献
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As Germany’s representative 2006 Survey of the International Social Justice Project clarifies, intergenerational justice and financing of future pensions are seen as central problems of Germany’s state pension system by a vast majority. Despite this common perception, proposals for reform that address the issue of intergenerational justice directly at the institutional level are extremely unpopular. Moreover, concrete constitutive elements of the state pensions system, like the amount of contributions, the amount of benefits and the principle of status-conservation are seen as largely fair. As mechanisms driving this preference for the status quo, anchoring effects, loss aversion and socialization are proposed and tested empirically via factorial survey methods. Results indicate that arbitrary settings (anchors) determine what people regard as a just pension irrespective of individual justice standards. Furthermore, loss aversion can help explain why individual worries about economic status in old age overlay consideration of exchange relations between the young and the old within the pensions system. As a result, potential benefits of reform are hardly recognized. Finally, former institutional settings prove to be formative for ideas of justice in the long run. Even under the condition of comparable economic interests, Germans from the former GDR expect a more egalitarian distribution of pensions, whereas Western Germans strongly favor allocation according to status criteria. 相似文献
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Consistent with a new genre of research on life-course analyses of health-service use, this study explores the consequences of long-term exposure to a risk factor. Drawing from cumulative-disadvantage theory, the study examines whether obesity, especially chronic obesity, increases hospitalization admission and length of stay. Analyses make use of hospital records abstracted over 20 years from a national survey of adults 41 to 77 years of age at baseline (n = 4,574). Multiple measures of body weight are used to calculate adult obesity duration. Results reveal that obesity increased hospital admissions and length of stay over the 20 years studied. Among persons obese at any time during the study, years of obesity also led to longer stays. The findings highlight the utility of measures of the duration of risk exposure for both life-course studies of health and tests of cumulative-disadvantage theory. 相似文献
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Differences and similarities in monetary benefits for informal care in old and new EU member states
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This article presents an overview of the monetary benefits available in the context of long‐term care provided by family or other informal carers in 11 old and 10 new EU member states. All but one country in our sample offer at least some monetary benefits that can be used to help finance informal care. Old EU member states tend to direct benefits to individuals in need of care, whereas new EU member states place more emphasis on benefits for carers. Among new EU member states, monetary benefits are less often means‐tested and tend to be lower compared with benefits in old EU member states. Because social policies in many countries increasingly rely on monetary benefits rather than on benefits in kind and because the share of informal care in the overall provision of elderly care will scarcely decline, monetary benefit incentives for labour market participation need to be carefully monitored. 相似文献
10.
The positive association between moderate alcohol consumption and wages is well documented in the economic literature. Positive
health effects as well as networking mechanisms serve as explanations for the “alcohol–income puzzle.” Using individual-based
microdata from the SOEP for 2006, we confirm that this relationship exists for Germany as well. More importantly, we shed
light on the alcohol–income puzzle by analyzing, for the first time, the association between beverage-specific drinking behavior
and wages. In our analysis, we disentangle the general wage effect of drinking into diverse effects for different types of
drinkers. Mincerian estimates reveal significant and positive relationships between wine drinkers and wages as well as between
multiple beverage drinkers and wages. When splitting the sample into age groups, the “drinking gain” disappears for employees
under the age of 35 and increases in size and significance for higher age groups. We also find a “beer gain” for the oldest
age group and male residents of rural areas as well as a “cocktail gain” for residents of urban areas. Several explanations
for our empirical results are discussed in view of the likelihood that the alcohol–income puzzle is a multicausal phenomenon.
相似文献
Markus M. GrabkaEmail: |