“…Perhaps they feared ending up as unsuccessful participants? Up until now the literature has essentially divided respondents into successful and unsuccessful patients; to explain variability in long-term results, researchers have increasingly emphasized nonsurgical factors (Bond et al, 2010; Fried et al, 2008; Hofsø et al, 2011; Kristinsson, 2008; Lier, Biringer, Bjørvik, & Rosenvinge, 2012a; Lier, Biringer, Stubhaug, & Tangen, 2012b; Snyder et al, 2009; Steffen, Potoczna, Bieri, & Horber, 2009). Since the beginning of this century, the crucial role of lifestyle changes in ensuring successful outcomes have also been emphasized in national guidelines issued by public health authorities in most Western countries.…”