Gerdtham, Ulf-G.; Löthgren, Mickael - Economics Institute for Research (SIR), … - 1998
The recent findings by McCoskey and Selden (1997, Journal of Health Economics, forthcoming) that health expenditure and GDP are stationary are driven by the omission of time trends in their ADF regressions. Since both health expenditure and GDP are trending, this omission raise serious doubts on...