“…The most commonly used global variables in empirical bond and CDS spread studies are the VIX index, which proxies for volatility in global markets, the yield on a long-term US Treasury bond, which proxies for changes in the US economy, the default yield spread defined as the spread between corporate bonds with low and high credit rating, the returns on a US stock market index, which proxies for the global economic condition and the global business cycle, the TED spread, which proxies for changes in global liquidity, and an equity risk premium proxy, such as the earnings price ratio on a stock market index (see, for example, Longstaff et al, 2011;Gonzalez-Rozada and Levy-Yeyati, 2008;Hilscher and Nosbusch, 2010;Baldacci et al, 2011;Beck, 2001;Eichengreen and Mody, 2000).…”