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Background: A continuous-time three-state model can be used to describe change in cognitive function in the older population. State 1 corresponds to normal cognitive function, state 2 to cognitive imp...
Considering a finance constrained economy, we discuss the stabilization role of variable labour and capital income taxes under a balanced-budget rule in the presence of consumption externalities of th...
By the end of 2011, the US had closed all hard military bases in Iraq, but its “soft” military presence remained using private security contractors, military and intelligent officers located in the US...
The identification of average causal effects of a treatment in observational studies is typically based either on the unconfoundedness assumption or on the availability of an instrument. When availabl...
Between 1980 and 1987, the number of Hispanic workers rose dramatically, accounting for almost a fifth of the Nation's employment growth; the increase for Hispanic women was especially sharp. The numb...
Policymakers have been puzzled to observe that food stamp households appear more likely to be food insecure than observationally similar eligible nonparticipating households. We reexamine this issue a...

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