A key prediction of standard models of economic growth is that the output-capital ratio is constant along the economy’s balanced growth path. Using data for 16 OECD countries over 135 years we examine whether the output-capital ratio reverts to a constant in the long run using univariate and panel stationarity tests with structural breaks. Univariate unit root tests with one and two breaks in t...

background over the last decade there has been an increase in healthcare expenditures while at the same time the inequity in distribution of resources has grown. these two issues have urged the researchers to review the determinants of healthcare expenditures. in this study, we surveyed the determinants of health expenditures in economic cooperation organization (eco) countries.   methods we us...

The paper analyzes the impact of the initial observation on the problem of testing for unit roots. To this end, we derive a family of optimal tests that maximize a weighted average power criterion with respect to the initial observation. We then investigate the relationship of this optimal family to unit root tests in an asymptotic framework. We find that many popular unit root tests are closel...