Table 2.
Convergent and divergent validity of the PTDS and its DSM-III-R precursor PSS-SR
| Authors | PSS/PTDS Scales | IES Total score | IES Intrusion | IES Avoidance | BDI |
| Foa et al. (1993) [8] | PSS Total score | .81 | .53 | .80 | |
| Reexperiencing | .81 | .47 | .66 | ||
| Avoidance | .71 | .52 | .73 | ||
| Hyperarousal | .70 | .45 | .75 | ||
| Stieglitz et al. (2001) [9] | PSS Total score | .67 & .65 | .61 & .57 | .61 only at first measurement (a few days after the accident) | |
| Reexperiencing | .63 & .59 | .53 & .47 | .45 | ||
| Avoidance | .56 & .55 | .50 & .51 | .50 | ||
| Hyperarousal | .52 & .49 | .47 & .45 | .60 | ||
| Foa et al. (1997) [3] | Total score | .78 | .80 | .66 | .79 |
| Reexperiencing | .68 | .77 | .51 | .67 | |
| Avoidance | .75 | .72 | .69 | .77 | |
| Hyperarousal | .70 | .74 | .58 | .73 |