“…Congruence between PSRP and caregiver pain evaluation can be taken as a tool to uncover bias moderators in pain assessment (Solomon, 2001). This issue was studied at various pain conditions or settings (Iafrati, 1986; Grossman et al, 1991; Zalon, 1993; Tait and Chibnall, 1994, 1997; Todd et al, 1994; Chibnall and Tait, 1995, 2001; Chibnall et al, 1997, 2000; Bartfield et al, 1997; Marquié et al, 2003, 2007; Igier et al, 2007). In these studies most health operators were involved and lack of congruence was shown to increase with the PSRP severity.…”