“…Third, few studies distinguish between different types of promotions and their influence on attendance above and beyond uncontrollable external drivers. Some previous work has examined differences between various promotions, but it is often unclear which promotions are included in such studies, and in some cases, a number of promotions are purposefully excluded from analysis (see Barilla et al 2008, Boyd and Krehbiel 2003, Gifis and Sommers 2006, Lemke et al 2010, Marcum and Greenstein 1985, McDonald and Rascher 2000, Siegfried and Eisenberg 1980. Therefore, every promotion employed by the Pirates from 2010 to 2012 was included in the data set and classified into one of the following four promotional categories (to be described in more detail later): entertainment, giveaway, kids, and price promotions.…”