Table 1.
Correlations between predictor variables and post‐traumatic stress severity at each assessment
| Mean (SD)/Frequency (%) | PTSS (2–4 weeks) | PTSS (2 months) | Acute stress disorder diagnosis (2–4 weeks) | PTSD diagnosis (2 months) | |||||
|---|---|---|---|---|---|---|---|---|---|
| r | N | r | N | r | N | r | N | ||
| Demographic variables | |||||||||
| Age | 14.2 (2.9) | .12 | 197 | .06 | 206 | .08 | 208 | .12 | 208 |
| Female sex | 89 (42.8%) | .13 | 197 | .05 | 206 | .04 | 208 | −.02 | 208 |
| Minority ethnicity | 13 (6.3%) | −.07 | 197 | .00 | 206 | .07 | 208 | −.02 | 208 |
| Household income >£20K | 127 (61.1%) | −.15* | 172 | −.05 | 179 | −.05 | 180 | −.16* | 180 |
| Pretrauma emotional well‐being | |||||||||
| Emotional difficulties | 7.7 (3.1) | .43**** | 197 | .35**** | 201 | .29**** | 202 | .25*** | 202 |
| Trauma severity | |||||||||
| Assault (yes/no) | 36 (17.3%) | .26*** | 197 | .27**** | 206 | .37**** | 208 | .32**** | 208 |
| Head injury | 81 (38.9%) | .21** | 195 | .07 | 204 | .19** | 206 | .19** | 206 |
| Number of injuries | 1.7 (.9) | .07 | 197 | .04 | 206 | .03 | 208 | .13 | 208 |
| Fracture (yes/no) | 47 (22.6%) | −.06 | 197 | −.07 | 206 | −.08 | 208 | .02 | 208 |
| Admission (yes/no) | 60 (28.8%) | −.17 | 197 | −.14 | 206 | −.20 | 207 | −.14 | 208 |
| Resus (yes/no) | 25 (12.0%) | −.09 | 195 | −.06 | 204 | −.11 | 206 | −.07 | 206 |
| Permanent loss function | 7 (3.4%) | −.11 | 197 | −.09 | 206 | −.08 | 208 | −.06 | 208 |
| Week 2 psychopathology | |||||||||
| PTSS (CPSS) | 11.5 (11.1) | ‐ | ‐ | .72**** | 196 | .62**** | 197 | .57**** | 197 |
| Depression (SMFQ) | 5.3 (5.8) | .78**** | 197 | .63**** | 196 | .50**** | 197 | .53**** | 197 |
| Two‐month psychopathology | |||||||||
| PTSS (CPSS) | 7.7 (9.7) | ‐ | ‐ | ‐ | ‐ | ‐ | ‐ | .71**** | 206 |
| Depression (SMFQ) | 4.5 (5.5) | ‐ | ‐ | ‐ | ‐ | .68**** | 205 | .53**** | 205 |
| Peritrauma cognitive processing | |||||||||
| Threat | 7.8 (2.6) | .51**** | 196 | .36**** | 195 | .28**** | 196 | .21** | 196 |
| Data‐driven processing | 15.8 (6.0) | .54**** | 196 | .48**** | 195 | .44**** | 196 | .32**** | 196 |
| Panic | 3.7 (2.4) | .59**** | 196 | .54**** | 195 | .43**** | 196 | .37**** | 196 |
| Peritraumatic dissociation | 4.0 (3.1) | .52**** | 196 | .45**** | 195 | .40**** | 196 | .33**** | 196 |
| Peritraumatic pain | 3.1 (1.1) | .35**** | 195 | .19** | 194 | .14* | 195 | .14* | 195 |
| Post‐trauma psychosocial factors (Week 2) | |||||||||
| Adaptive processing | 13.6 (3.8) | .32**** | 196 | .27*** | 196 | .17* | 196 | .17* | 196 |
| Ongoing pain | 1.7 (.9) | .38**** | 196 | .32**** | 195 | .28**** | 196 | .18* | 196 |
| Life stressors | .9 (1.1) | .22** | 196 | .15* | 205 | .19** | 207 | .09 | 207 |
| Social support (MSPSS) | 69.4 (13.0) | −.09 | 197 | −.07 | 195 | −.02 | 197 | −.03 | 197 |
| Post‐trauma cognitive processing (Week 2) | |||||||||
| Persistent dissociation | 1.5 (2.4) | .68**** | 197 | .61**** | 196 | .53**** | 197 | .44**** | 197 |
| Memory quality (TMQQ) | 21.8 (6.9) | .70**** | 196 | .62**** | 195 | .47**** | 196 | .47**** | 196 |
| Negative appraisals (CPTCI) | 37.9 (14.6) | .76**** | 197 | .73**** | 196 | .56**** | 197 | .61**** | 197 |
| Rumination | 7.49 (2.8) | .62**** | 196 | .58**** | 195 | .41**** | 197 | .42**** | 197 |
| Self‐blame | 3.5 (2.0) | .07 | 196 | .02 | 195 | −.07 | 196 | −.02 | 196 |
CPSS, Child PTSD Symptom Scale; CPTCI, Child Post‐Traumatic Cognitions Inventory; MSPSS, Multidimensional Scale of Perceived Social Support; PTSS, post‐traumatic stress severity; SMFQ, Short Mood and Feelings Questionnaire; TMQQ, Trauma Memory Quality Questionnaire.
*p < .05; **p < .01; ***p < .001; ****p < .0001.