“…Various modal CS codetypes have been reported in samples of individuals with PTSD ranging from 2-8/8-2 (i.e., Depression and Schizophrenia; Fairbank, Keane, & Malloy, 1983; Keane et al, 1984; Munley, Bains, Bloem, & Busby, 1995; Wilson & Walker, 1990), 7-8/8-7 (i.e., Psychasthenia and Schizophrenia; Albrecht et al, 1994; Litz et al, 1991; Wetter, Baer, Berry, Robison, & Sumpter, 1993), to 6-8/8-6 (i.e., Paranoia and Schizophrenia; Mozley, Miller, Weathers, Beckham, & Feldman, 2005). The 46-item PK scale has demonstrated good sensitivity in the classification of individuals with the disorder (e.g., Greenblatt & Davis, 1999; Keane et al, 1984; Munley et al, 1995). It also appears to contribute incrementally, adding an additional 9% of variance beyond RCd in the prediction of PTSD status in a treatment-seeking inpatient sample; however, these results were not replicated in a compensation-seeking veteran sample (Arbisi, McNulty, & Ben-Porath, 2004).…”