Table 3.
Descriptive analyses for PTSD for intent to treat sample (N = 34) (estimated values)
| Variable (primary outcome measures) | TAU + SWT (A) (N = 19) | TAU (B) (N = 15) | GLM | Partial η2 | Contrast | Partial η2 | GLM | Partial η2 | GLM | partial bη2 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |
pre |
mid |
post |
fu |
pre |
mid |
post |
fu |
Time |
Time |
1 pre-mid |
1 pre-mid |
condition |
condition |
Time * condition |
Time * condition |
|
2 mid-post |
2 mid-post |
|||||||||||||||
|
3 post-fu |
3 post-fu |
|||||||||||||||
|
PDS total: M (SD) |
30.4 (9.7) |
28.2 (9.0) |
17.6 (12.0) |
23.5 (14.8) |
28.3 (10.7) |
26.5 (9.8) |
24.3 (9.1) |
21.7 (9.4) |
A + B ** |
0.166 |
1 A ns B ns |
A 0.036 B 0.037 |
ns |
0.000 |
ns |
0.059 |
|
2 A * B ns |
A 0.341 B 0.040 |
|||||||||||||||
|
3 A ns B ns |
A 0.143 B 0.062 |
|||||||||||||||
| |
|
|
|
|
|
|
|
|
McN χ2 |
OR 3 |
|
|
Fisher t 4 |
φ5 |
|
|
|
SCID (PTSD) n (%) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| PTSD |
19 (100) |
- |
9.8 (51.8) |
- |
15 (100) |
- |
13.2 (88.0) |
- |
A* |
0 |
|
|
- |
−0.390 |
- |
- |
| B |
0 |
|||||||||||||||
| Partial & Full-blown | ||||||||||||||||
| Partial PTSD |
10 (52.6) |
- |
2.8 (14.7) |
- |
3 (20.0) |
- |
2.4 (16.0) |
- |
A* |
0.1 |
|
|
- |
−0.028 |
- |
- |
| B |
0.8 |
|||||||||||||||
| Full-blown PTSD |
9 (47.4) |
- |
7 (36.8) |
- |
12 (80.0) |
- |
10.8 (72.0) |
- |
A |
0.7 |
|
|
- |
−0.353 |
- |
- |
| B | 0.8 | |||||||||||||||
Note. PTSD Posttraumatic Stress Disorder, TAU Treatment as usual, SWT Structured Writing Therapy, PDS Posttraumatic Diagnostic Scale, SCID Structured Clinical Interview of DSM IV, PTSD Posttraumatic stress disorder, A = TAU + SWT. B = TAU. pre pre-treatment, mid mid-treatment, post post-treatment, Fu follow up. McN χ2 = McNemars χ2. OR odds ratio, Pl Con planned contrasts.
*p <0.05 **p < 0.001. t trend, ns not significant.
3OR = increase of cases/ decrease of cases.
4Overall Fisher’s excact test was calculated for PTSD diagnosis (p = 0.06).
φ5 Phi (measure of effectsize).