Table 1.
Sample baseline characteristics (after imputation).
| Unmatched (n = 156) | Matched (n = 32) | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DBT-PTSD (n = 45) | TAU (n = 111) | DBT-PTSD (n = 16) | TAU (n = 16) | ||||||||||||
| N | M or % | SD | N | M or % | SD | p | SMDa | Missing (%) | M or % | SD | M or % | SD | p | SMDa | |
| Age | 45 | 47.2 | 9.49 | 111 | 43.0 | 11.1 | .020 | 0.42 | 0 | 44.9 | 9.24 | 47.9 | 10.2 | .399 | 0.30 |
| Sex (female) | 45 | 86.7 | 111 | 81.1 | .403 | 0.13 | 0 | 81.3 | 87.5 | .500 | 0.17 | ||||
| Education (> secondary education) | 45 | 37.8 | 111 | 44.1 | .466 | 0.12 | 5.8 | 37.5 | 31.3 | .710 | 0.13 | ||||
| Employment | 45 | 11.1 | 111 | 7.2 | .523 | 0.13 | 7.1 | 18.8 | 12.5 | .626 | 0.17 | ||||
| Treatment duration | 45 | 60.8 | 21.8 | 111 | 55.1 | 16.4 | .080 | −0.31 | 0 | 58.4 | 19.2 | 61.1 | 15.3 | .664 | 0.16 |
| No. of times in clinic | 45 | 1.40 | 0.84 | 111 | 1.71 | 1.15 | .100 | 0.29 | 6.4 | 1.56 | 0.96 | 1.75 | 1.06 | .605 | 0.19 |
| No. diagnoses | 45 | 3.56 | 2.04 | 111 | 4.86 | 2.02 | <.001 | 0.64 | 0 | 3.94 | 1.57 | 3.88 | 1.59 | .912 | −0.04 |
| Chronicity (> 2 years) | 45 | 97.8 | 111 | 99.1 | .495 | 0.11 | 6.4 | 100 | 100 | 0 | |||||
| CTQtotal | 31 | 75.4 | 10.5 | 76 | 69.9 | 11.7 | .027 | −0.48 | 4.71 | 71.4 | 10.6 | 69.2 | 13.3 | .613 | −0.18 |
a
Standardized mean difference = difference in mean or proportions divided by the standard error; imbalance between groups is defined as absolute value greater than 0.20 (corresponding to a small effect size).
Note: DBT-PTSD = Dialectical Behaviour Therapy – Posttraumatic Stress Disorder, TAU = Treatment as usual, CTQ = Childhood Trauma Questionnaire.