“…A review of 97 research reports dealing with peri-operative care identified anxiety as a main focus of research but no mention was made of depression (Leinonen & Leino-Kilpi 1999). The narrow focus on anxiety neglects depression, which have been studied extensively in patients with cancer pain (Noyes & Kathol 1986, Massie & Holland 1990, Carroll et al 1993, White et al 1997, chronic pain populations (Bukberg et al 1984, Magni et al 1990, Hitchcock et al 1994) and sickle cell pain (Pallister 1992, Thomas et al 2001) but remain a minority interest in acute pain.…”