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961.
Selection Bias and Continuous-Time Duration Models: Consequences and a Proposed Solution 总被引:3,自引:0,他引:3
Frederick J. Boehmke Daniel S. Morey Megan Shannon 《American journal of political science》2006,50(1):192-207
This article analyzes the consequences of nonrandom sample selection for continuous-time duration analyses and develops a new estimator to correct for it when necessary. We conduct a series of Monte Carlo analyses that estimate common duration models as well as our proposed duration model with selection. These simulations show that ignoring sample selection issues can lead to biased parameter estimates, including the appearance of (nonexistent) duration dependence. In addition, our proposed estimator is found to be superior in root mean-square error terms when nontrivial amounts of selection are present. Finally, we provide an empirical application of our method by studying whether self-selectivity is a problem for studies of leaders' survival during and following militarized conflicts. 相似文献
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Daniel P. Clarke Sue L. Hrasky Caroline G.T. Tan 《Australian Journal of Public Administration》2009,68(2):194-207
Research on local government annual reports has been limited, particularly in relation to report narratives. This study aims to determine whether characteristics of narratives vary between the reports of local governments and listed companies. After considering the nature of the potential report audiences it was predicted that, if writers consider their audience, local government report narratives would be easier to read, less likely to be obfuscated, and use fewer passive sentences than those in corporate reports. The results suggest that mayoral letters exhibit higher reading ease and are less likely to be obfuscated than their corporate counterparts but they are also shorter and contain more passive constructions, making conclusions about readability and understandability ambiguous. This research acquaints readers with important aspects to consider when preparing or evaluating narrative reports. 相似文献
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Daniel H. Levine 《Bulletin of Latin American research》2002,21(2):248-269
This paper presents an argument about the causes of the decline and fall of the 1958–1999 system of democratic politics, commonly known in Spanish as puntofijista , in Venezuela. Competing explanations of this process are evaluated, and an interim assessment of President Hugo Chávez and his political project is offered. 相似文献
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