“…According to the labor market approach, the entry rate may be viewed as the propensity of a member of the regional workforce to start an own business. Because start-ups are usually located close to the founder's residence (Stam, 2007;Dahl and Sorenson, 2009) Sometimes, net entry, calculated as the change in the number of businessowners, is used, mainly for reasons of data availability (e.g., Carree and Thurik, 2008;Dejardin, 2011). Another variant is to analyze the effect of turbulence, defined as the number of entries plus the number of exits, on economic development (e.g., Bosma, Stam, and Schutjens, 2011), which can be regarded as an indicator of the level of creative destruction in the region.…”