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Full factorial general linear design with group (GAD versus HV) and IQ as predictor variables and worry scores as the dependent variable.
| Degr. of freedom | F | p | |
|---|---|---|---|
| Group | 1; 39 | 6.65 | 0.0138 |
| IQ | 1; 39 | 0.14 | 0.7075 |
| Group*IQ | 1; 39 | 16.45 | 0.0002 |
| Study | 1; 39 | 3.30 | 0.0770 |
| Age | 1; 39 | 0.09 | 0.7643 |
GAD, generalized anxiety disorder; HV, healthy volunteers; IQ, intelligence quotient, Degr., degrees, Worry scores measured by the Penn State Worry Questionnaire, Study Number, and Age used as control variables.
