Fig. 1From: Psychosomatic therapy for patients frequently attending primary care with medically unexplained symptoms, the CORPUS trial: study protocol for a randomised controlled trialSchedule of enrolment, interventions and assessments. PSTÂ psychosomatic therapy; CAUÂ care as usual; PHQ-15Â Patient Health Questionnaire 15-item somatic symptom scale; PSFSÂ Patient Specific Functioning Scale; iMCQ iMTA Medical Consumption Questionnaire; iPCQÂ iMTA Productivity Cost Questionnaire; NRSÂ numeric rating scale; SF-36Â Short Form Health Survey-36 items; 4DSQÂ Four Dimensional Symptom Questionnaire; GPEÂ Global Perceived Effect; IASÂ Illness Attitude Scale; IPQ-BÂ Brief Illness Perception Questionnaire; SRS-DVÂ Session Rating Scale Dutch version; WAI-SFÂ Working Alliance Inventory short form; 1Â only intervention group, directly after first session; 2Â only intervention group directly after last sessionBack to article page