Table 1.
Demographic Characteristics and Descriptives for Main Study Variables
| Characteristic | Total Sample (N = 321) | Study 1 Participants (n = 56)1 | Study 2 Participants (n = 265)2 | t or χ2 | p | |
|---|---|---|---|---|---|---|
| Age [M (SD)] | 33.04 (7.39) | 32.34 (7.32) | 33.19 (7.43) | 0.78 | .43 | |
| Months in service [M (SD)] | 128.45 (74.49) | 118.73 (72.32) | 130.48 (76.12) | 1.06 | .29 | |
| Male [n (%)] | 294 (91) | 52 (93) | 242 (91) | 0.21 | .65 | |
| Married/cohabitating [n (%)] | 235 (73) | 47 (84) | 188 (71) | 3.47 | .06 | |
| Ethnicity [n (%)] | 7.81 | .05 | ||||
| Black | 90 (28) | 11 (20) | 79 (30) | |||
| Hispanic | 85 (26) | 10 (18) | 75 (28) | |||
| White | 142 (44) | 34 (61) | 108 (41) | |||
| Other | 5 (1) | 1 (2) | 4 (1) | |||
| Education [n (%)] | 0.84 | .66 | ||||
| High school or less | 85 (26) | 17 (30) | 68 (26) | |||
| Some college | 213 (66) | 36 (64) | 177 (66) | |||
| College/graduate degree | 24 (8) | 3 (6) | 21 (8) | |||
| Enlisted rank [n (%)] | 313 (97) | 54 (96) | 259 (97) | 1.50 | .70 | |
| Typical duty [n (%)] | 0.37 | .83 | ||||
| Combat arms | 119 (37) | 20 (36) | 99 (37) | |||
| Combat support | 76 (24) | 12 (21) | 64 (24) | |||
| Combat service support | 127 (39) | 24 (43) | 103 (39) | |||
| Number of deployments [n (%)] | 4.58 | .21 | ||||
| 1 | 93 (29) | 17 (30) | 30 (32) | |||
| 2 | 112 (35) | 24 (43) | 50 (38) | |||
| 3 | 66 (21) | 11 (20) | 28 (21) | |||
| 4+ | 51 (16) | 4 (7) | 25 (19) | |||
| Sample Size and Estimated Sample Statistics for Main Study Measures (M, SE) | ||||||
| Time Point | N | PCL-S Total | CERQ Self-Blame | CERQ Other-Blame | ||
| Baseline | 321 | 56.16 (0.59) | 3.68 (0.12) | 4.68 (0.14) | ||
| Week 1 assessment | 277 | 54.69 (0.60) | 4.21 (0.11) | 5.38 (0.12) | ||
| Week 2 assessment | 253 | 53.97 (0.64) | 4.15 (0.12) | 5.54 (0.13) | ||
| Week 3 assessment | 236 | 52.42 (0.73) | 4.11 (0.12) | 5.54 (0.13) | ||
| Week 4 assessment | 216 | 50.89 (0.82) | 3.94 (0.13) | 5.48 (0.13) | ||
| Week 5assessment | 199 | 48.51 (0.95) | 3.69 (0.12) | 5.42 (0.14) | ||
| Week 6 assessment | 175 | 45.73 (1.03) | 3.44 (0.13) | 5.35 (0.14) | ||
Note. Tests for all categorical variables are with df = 1–3. Tests for variables presented with means and standard deviations are with df = 319. PCL-S = PTSD Checklist – Stressor-Specific Version; CERQ = Cognitive Emotion Regulation Questionnaire-Short Form.
1
All of these participants received group CPT.
2
Participants in their trial received CPT in either individual (n = 133) or group (n =132) format.