“…In addition, just as pharmacokinetic or in vitro receptor affinities vary within the class, potential differences in patterns of use also emerge among the SSRIs. For example, comparative studies of individual SSRIs report differences in therapy duration and rates of switching and augmentation (Thompson et al, 1996;McCombs et al, 1998), upward dose titration (Gregor et al, 1994;Navarro et al, 1995;Truter and Kotze, 1996;Bingefors et al, 1997;Hylan et al, 1998b;Montejo et al, 1998), the likelihood of discontinuation symptomatology (LeJoyeux et al, 1996;Coupland et al, 1996), and concomitant anxiolytic and sedative-hypnotic use (Rascati, 1995;Gregor et al, 1996;Pathiyal et al, 1997;Hylan et al, 1997). Adjustments to initial therapy (e.g., dose titration, switching, addition of concomitant medications), may signal a potential delay in achieving optimal therapeutic benefit and may have economic as well as clinical consequences (Thompson et al, 1996).…”