I'm having some trouble at replicating this paper (text here: http://www.michiganjb.org/issues/52/text52c.pdf) The paper wants to assess the economic impact of the Olympic games in the long run . The author has a big dataset cointaing data on GDPpc for host and runner-up countries from 10 years before to 10 years after the Games. Data are from page 88 for host countries and from page 89 for runner-up countries. Regressions and variables are explained in page 73. I'm just interested in regression (1) and (2a). I keep getting different results from the paper. Could you help me?