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Table 1 Participant characteristics before treatment

From: A unified Internet-delivered exposure treatment for undifferentiated somatic symptom disorder: single-group prospective feasibility trial

Sociodemographic variables
 Age in years 46 (14), 23–74
 Female gender 22 (67%)
 University educationa 27 (82%)
 Married or de facto 27 (82%)
 Has children 26 (79%)
 Employment
  Working full-time 21 (64%)
  Working part-time (< 90%) 7 (21%)
  Retired 4 (12%)
  Student 1 (3%)
Clinical variables
 Somatic symptom disorder
  Somatic symptom burden (PHQ-15)b 11.8 (4.6), 3–20
  Symptom preoccupation (SSD-12)b 33.2 (8.1), 22–47
  Functional impairment (WD2-12)b 20.3 (16.1), 2.1–68.8
  Age of onset 35 (18), 7–71
 Psychiatric comorbidity, current
  Major depressive disorder 8 (24%)
  Anxiety disorder, PTSD or OCD 15 (45%)
 Non-psychiatric comorbidity, any time
  Hypertension 8 (24%)
  Migraine 8 (24%)
  Irritable bowel syndrome 7 (21%)
  Osteoarthritis 6 (18%)
  Atrial fibrillation 5 (15%)
  Hiatal hernia 5 (15%)
  Hyper- or hypothyroidism 5 (15%)
  Atopic dermatitis 4 (12%)
  Cancer, any 4 (12%)
  Asthma 3 (9%)
  Fibromyalgia 1 (3%)
  Psoriasis 1 (3%)
  Renal disease 1 (3%)
 Medication
  Psychotropic 15 (45%)
  Pain, prescribed 3 (9%)
Recruitment path
 Searching on the internet 15 (45%)
 Social media platform 6 (18%)
 Friend, acquaintance or family member 3 (9%)
 Routine care clinician 2 (6%)
 Other or does not remember 7 (21%)
  1. Estimates are n (%) or M (SD), range. Psychiatric comorbidity is based on a diagnostic telephone interview and non-psychiatric diagnoses given by a physician are self-reported. OCD Obsessive–compulsive disorder, PHQ-15 Patient Health Questionnaire 15, PTSD Post-traumatic stress disorder, SSD-12 Somatic Symptom Disorder 12, WD2-12 12-item World Health Organization Disability Assessment Schedule 2
  2. aInternational Standard Classification of Education 1997 (ISCED-97) level 4 or higher
  3. bThis refers to the screening values, with conventional questionnaire phrasings (as opposed to revised phrasings to concern the past week only)