This paper examines the horizontal and vertical export spillovers of foreign direct investment (FDI) on China’s manufacturing domestic firms by using firm-level census data over the period of 2000–03. Based on a Heckman two-step procedure combining first differencing and instrumental variable regression techniques, we find that FDI has had a positive impact on the export value of domestic firms...

This paper estimates returns to education in India using a nationally representative survey. We estimate the standard Mincerian wage equation separately for rural and urban sectors. To account for the possibility of sample selection bias, Heckman two-step procedure is used. The findings indicate that returns to education increase with the level of education and differ for rural and urban reside...

Abstract Wineries in the “old world” export almost 40% of their production. This study analyzes influence vertical and horizontal networks on performance. We draw a sample 183 Spanish wineries examine main independent variables using two-step Heckman model. find positive effects and—at somewhat lower level—downstream (JEL Classifications: L66, M16, Q13)

BACKGROUND The objective of this study was to demonstrate the use of the Heckman two-step method to assess and correct for bias due to missing health related quality of life (HRQL) surveys in a clinical study of acute coronary syndrome (ACS) patients. METHODS We analyzed data from 2,733 veterans with a confirmed diagnosis of acute coronary syndromes (ACS), including either acute myocardial in...