Table 1 Overview assessment schedule

Screening SCID-I ^*

DSM-IV-TR

Axis I disorders

Primary Outcome

IBDQ^**

Inflammatory Bowel Disease Questionnaire

E C

C

E C

E C

Secondary Outcome

SF-36^**

MOS 36-item Short-Form Health Survey

E C

C

E C

E C

HADS^**

Hospital Anxiety and Depression Scale

E C

C

E C

E C

CES-D^**

The Center for Epidemiologic Studies Depression Scale

E C

C

E C

E C

P-HBI^**

Patient-based Harvey Bradshaw Index

E C

C

E C

E C

P-SCCAI^**

Patient-based Simple Clinical Colitis Activity Index

E C

C

E C

E C

Potential Mediators

DAS^**

Dysfunctional Attitude Scale

E C

C

E C

E C

IPQ-R^**

Illness Perception Questionnaire-Revised

E C

C

E C

E C

UCL^**

Utrechtse Coping Lijst

E C

C

E C

E C