“…Survival (or duration) models have been widely used in epidemiology and medical research to explain occurrence of and survival from a disease (for example, Kurian, Sigal, and Plevritis 2009;Song and Lawson 2009;Spitale et al 2009;Madan et al 2008). Application to economic problems is less frequent but targeted to issues where duration is the focus-that is, exit or survival of firms (Olmos 2010;Tiller, Feleke, and Starnes 2009;Dimara et al 2008;Soderbom, Teal, and Harding 2006); rate of technology adoption (Abdulai and Huffman 2005); rate of contract termination (Olmos 2010); length of visitor stay (Barros and Machado 2010; Barros, Butler, and Correia 2010;Gokovali, Bahar, and Kozak 2007); timing of loan default (Roszbach 2004); infrastructure failure (Debon, Carrion, and Solano 2010); and employee retention (Mattox II and Jinkerson 2005).…”