“…Sullivan et al (1989) eliminated 5 redundant or uninformative items from the 15-item CIWA-A to create the revised CIWA (CIWA-Ar) to improve the efficiency, reliability, and validity of this scale. Used to clinically quantify and evaluate patient symptoms and often used to assess the need for medication, the CIWA-Ar has been employed in many recent pharmacotherapy trials (Addolorato et al, 2006;Favre et al, 2005;Schik et al, 2005). Several other measures of AWS have been introduced subsequently, primarily to reduce interviewer and respondent burden (Banger et al, 1992;Benzer, 1990;Gossop et al, 2002;Wetterling et al, 1997).…”