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Table 1 Overview of measures administered at each assessment interval

From: Cost-effectiveness of blended vs. face-to-face cognitive behavioural therapy for severe anxiety disorders: study protocol of a randomized controlled trial

Questionnaire Aim Baseline (T0) Week 7 (T1) Week 15 (T2) Week 67 (T3)
Primary outcomes
 BAI Anxiety severity x x x x
 SCID-I/MINI-plus Diagnostic interview x    
 EQ-5D-5L General well-being x x x x
 TiC-P Health-care utilization x   x x
Other variables of interest
 General patient characteristics   x    
 A priori treatment preference   x    
 BDI Depression x x x x
 WSAS Work and social adjustment x x x x
 BSI General psychopathology x x x x
 CSQ Satisfaction    x  
 Mastery Scale Locus of control x x x x
 WAI Therapeutic alliance   x   
 SUS (bCBT only) System usability    x  
  1. BAI Beck Anxiety Inventory, SCID Structured Clinical Interview for DMS disorders axis I, MINI plus Mini International Neuropsychiatric Interview Plus, EQ-5D-5L EuroQol, iC-P Trimbos and iMTA questionnaire on Costs associated with Psychiatric illness, BDI Beck Depression Inventory, WSAS Work and Social Adjustment Scale, BSI Brief Symptom Inventory, CSQ Client Satisfaction Questionnaire, WAI Work Alliance Inventory, SUS System Usability Scale, bCBT blended Cognitive Behavioural Therapy