Table 4.
Factor analyses of PTSD symptoms reporting a C3 item.
| Study |
Participants |
Test | Factors | Maximum Loadings C3 (others) | C3 rank | ||
|---|---|---|---|---|---|---|---|
| First Author | Year | n | Description | ||||
| Asmundson | 2000 | 349 | routine medical patients | PCL-C | 4 | .67 (.55–.85) | 14 |
| Asmundson | 2003 | 427 | male UN peacekeepers, | PCL-M | 4 | .56 (.33–.87) | 15 |
| 321 | with chronic back pain | 2 | .56 (.42–1.07) | 16 | |||
| without chronic back pain | PCL-M | 4 | .62 (.22–.90) | 16 | |||
| 2 | .61 (.63–1.16) | 17 | |||||
| Baschnagel | 2005 | 748 | undergraduates, 1 month post 9/11 for 9/11 events | PDS | 4 | .35 (.51–.83) | 17 |
| 705 | undergraduates, 3 months post 9/11 for 9/11 | PDS | 4 | .60 (.49–.84) | 14 | ||
| Buckley | 1998 | 217 | survivors of MVA, 49% PTSD | CAPS | 2 | .32 (.47–.80) | 17 |
| Cordova | 2000 | 142 | woman who had breast cancer | PCL-C | 3 | .41 (.47–.95) | 17 |
| Davidson | 1997 | 241 | war, rape, or hurricane trauma | D-F | 2 | .63 (.73–.90) | 17 |
| D-S | 2 | .82 (.77–.89) | 15 | ||||
| 67 | of 241 with current PTSD | D-F | 6 | .56 (.57–.84) | 17 | ||
| D-S | 6 | .79 (.60–.84) | 7 | ||||
| DuHamela | 2004 | 236 | bone marrow transplantation | PCL-C | 4 | .56 (.22–.76) | 13 |
| Kilpatrickb | 1998 | 528 | help seeking & community | SCID | 2 | .43 (.52–.77) | 17 |
| King | 1998 | 524 | male veterans, 70% had PTSD | CAPS | 4 | .27 (.51–.77) | 17 |
| Maes | 1998a | 130 | hotel fire, 55 car crash, 23%PTSD | ||||
| exploratory, oblique | CIDI | 3 | .49 (.37–.79) | 13.5 | |||
| exploratory, orthogonal | 3 | .48 (.41–.70) | 14 | ||||
| confirmatory, based on DSM-III | 3 | .37 (.43–.56) | 17 | ||||
| 1998b | exploratory, oblique | 2 | .49 (.32–.71) | 13 | |||
| exploratory, orthogonal | 2 | .48 (.36–.69) | 15 | ||||
| exploratory, 42 with PTSD only | 2 | .39 (.04–.78) | 14 | ||||
| confirmatory | 2 | .39 (.37–.65) | 16 | ||||
| confirmatory, 130 fire only | 2 | .38 (.42–.63) | 17 | ||||
| Palmieri | 2005 | 1,218 | women in sexual harassment lawsuit | PCL-C | 4 | .45 (.72–.90) | 17 |
| Shelby | 2005 | 148 | women who had breast cancer | PCL-C | 4 | .38 (.23–.84) | 15 |
| PCL-C | 3 | .44 (.28–.87) | 11 | ||||
| Simms | 2002 | 948 | deployed, first sample | PCL-M | 4 | .54 (.45–.89) | 15 |
| 948 | deployed, second sample | PCL-M | 4 | .49 (.61–.80) | 17 | ||
| 1,799 | not deployed in Gulf War | PCL-M | 4 | .40 (.59–.83) | 17 | ||
| 419 | of 1,896 deployed with A criteria | PCL-M | 4 | .47 (.63–.84) | 17 | ||
| Stewart | 1999 | 284 | substance-abusing women | PSS | 4 | .86 (.39–.86) | 1.5 |
| Tayor | 1998 | 103 | motor vehicle accidents | SCID | 2 | .17 (.42–.75) | 17 |
| 419 | UN peacekeepers | PSS | 2 | .44 (.46–.88) | 17 | ||
| Ventureyra | 2002 | 113 | outpatients with PTSD, 31 controls | PCSS | 3 | .08 (.07–.92) | 16 |
Notes: The lowest rank is 17. The following abbreviations are used for the PTSD tests: CAPS, Clinicial-Administered PTSD Scale, (Blake, et al., 1995); CIDI, Composite International Diagnostic Interview, (Smeets, Smeets, & Dingemans, 1993). DIS, modified Diagnostic Interview Schedule (Robins, Helzer, Croughan, & Ratcliff, 1981); PCL-C. PCL-M, PCL-S (Weathers, Litz, Huska, & Keane, 1994; Blanchard, Jones-Alexander, Buckley, & Forneris, 1996); PDS, Posttraumatic Diagnostic Scale, (Foa, Cashman, Jaycox, & Perry, 1997); PSS PTSD Symptom Scale (Foa, Riggs, Dancu, & Rothbaum, B1993) ; SCID, Structured Clinical Interview for the DSM-III-R (Spitzer, Williams, & Gibbon, 1987).
DuHamel et al. (2004) data included 110 of 111 participants in Smith et al. (1999).
Kilpatrick et al. (1998) used both the SCID and the DIS.