Table 3.

Information on included studies with fictional examples.

Study authors (year)	Type of study	Study characteristics	Diagnosis and assessment	Psychological variables (measurement tool)	Outcome(s)	Effect size
Example et al. (2015)	RCT on DBT therapy in patients with SSD	200 patients with SSD undergoing DBT vs. control (waiting list)	SSD: Cut-off scores (PHQ-15 ⩾ 15 and SSD-12 ⩾ 15)	Depression (PHQ-9), Somatosensory amplification (SSAS)	Primary: Diagnosis present at follow-up (cut-off scores), Secondary: symptom severity (NRS)	PHQ-9: d = xx, SSAS: d = yy; NRS: d = zz
Illustration (2016)	Cohort study on the development of BDD and the association with somatosensory amplification/traumatic childhood experiences	Cohort of 342 patients (BDD vs. no BDD)	BDD: clinical judgment	Somatosensory amplification (SSAS), Traumatic experience (ACE)	Somatosensory amplification score in BDD sample	r = aa (SSAS and ACE), d = bb

DBT, Dialectic Behavioral Therapy; SSD, Somatic Symptom Disorder; BDD, Bodily Distress Disorder; PHQ-9, Patient Health Questionnaire-9; PHQ-15, Patient Health Questionnaire-15; SSAS, Somatosensory Amplification Scale; SF-12, Short Form 12 Health Survey; NRS, numeric rating scale; ACE, Adverse Childhood Experiences Questionnaire.