Table 3. Multivariate linear regression presenting the final model with PDSS scores at six-month follow-up as dependent variable.
| B | SE | β | p value | |
| Model | ||||
| R = .667 | 3.92 | <0.05 | ||
| R2 = .445 | ||||
| Adj R2 = .402 | ||||
| Predictor variables | ||||
| SEVERITY | 0.5 | 0.13 | 0.42 | <0.001 |
| ASI | −0.09 | 0.04 | −0.23 | <0.05 |
| SDS1 | 0.49 | 0.17 | 0.30 | <0.01 |
| Moderators | ||||
| SDS3×GROUP | −1.10 | 0.35 | −0.30 | <0.01 |
| ONSET×GROUP | 0.17 | 0.78 | 0.21 | <0.05 |
Abbreviations: SEVERITY, Baseline symptom severity measured with the Panic Disorder Severity Scale; ASI, Anxiety sensitivity Index; SDS1, Functional impairment in work/school; SDS3, Functional impairment in family life/home responsibilities; ONSET, Age of initial onset of panic symptoms; GROUP, treatment condition, i.e. internet-delivered cognitive behavioural therapy or group-administered cognitive behavioural therapy.