# .Wefoundthatthemodelcontainingthefactorsanxiety,gloominessandsomatic/vege-tativewasonaveragethebestpredictingandthemostcorrectmodel. (IDS-C ),threetimesinahalfyearperiod.DuringthisperiodthesubjectsreceivedCognitiveBehaviouralTherapy.Toﬁndtheunderlyingfact

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### confirmatory factor analysis. We also tested a model that was suggested by the IDS-C

### Inventory of Depressive Symptomatology-Clinican

### In this research we used data from Nesda ("Nederlandse Study naar Depressie en Angst", translates as "The Dutch Study of Depression and Anxiety") (Boschloo et al., 2014). The Inventory of Depressive Symptomatology-Clinican

### IDS-C

### There are four options for every item in the IDS-C

### 3 2 1 0

### 3 2 1 0

### 3 2 1 0

### r

### n

### i=1 d

### n

### 6 − 2 P T

### n

### 6 − P T

### and y i . Moreover P T

### t

### 12

### X T

### t

### 12

### where t

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