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Table 1 Proportions of the studied subjects meeting PTSD symptom criteria and diagnoses

From: An evaluation of ICD-11 posttraumatic stress disorder criteria in two samples of adolescents and young adults exposed to mass shootings: factor analysis and comparisons to ICD-10 and DSM-IV

  DSM-IV ICD-10 Three-factor ICD-11 Two-factor ICD-11
  n (%) n (%) n (%) n (%)
Stressor criterion A     
 A1. Traumatic event 228 (100.0) 228 (100.0) 228 (100.0) 228 (100.0)
 A2. Emotional response 186 (81.6)    
Re-experiencing criterion B     
 B1. Distressing recollections 133 (58.3) 133 (58.3)   
 B2. Distressing dreams 117 (51.3) 117 (51.3) 117 (51.3) 117 (51.3)
 B3. Sense or reliving, illusions, hallucinations, or dissociative flashbacks 52 (22.8)    
 (B3.) Dissociative flashbacks only   44 (19.3) 44 (19.3) 44 (19.3)
 B4. Psychological reactivity 89 (39.0) 89 (39.0)   
 B5. Physiological reactivity 62 (27.2)    
Avoidance criterion C     
 C1. Avoiding internal reminders 90 (39.5) 90 (39.5) 90 (39.5) 90 (39.5)
 C2. Avoiding external reminders 55 (24.1) 55 (24.1) 55 (24.1) 55 (24.1)
 C3. Specific amnesia 39 (17.1) 39 (17.1)   
 C4. Diminished interest 48 (21.1)    
 C5. Detachment 26 (11.4)    
 C6. Restricted affect 45 (19.7)    
 C7. Foreshortened future 17 (7.5)    
Hyperarousal criterion D     
 D1. Difficulty sleeping 107 (46.9) 107 (46.9)   
 D2. Irritability 64 (28.1) 64 (28.1)   
 D3. Difficulty concentrating 96 (42.1) 96 (42.1)   
 D4. Hypervigilance 88 (38.6) 88 (38.6) 88 (38.6) 88 (38.6)
 D5. Exaggerated startle response 106 (46.5) 106 (46.5) 106 (46.5) 106 (46.5)
Criterion fulfilled     
 Exposure and symptom criteria positive 52 (22.8) 85 (37.3) 66 (28.9) 74 (32.5)
 Exposure and symptom criteria positive with positive impairment criteria 43 (18.9) 62 (27.2) 51 (22.4) 56 (24.6)
  1. DSM-IV diagnosis requires stressor criterion A1 and A2 as well as 1/5 of re-experiencing symptoms, 3/7 avoidance symptoms, 2/5 hyperarousal symptoms, and impairment. ICD-10 diagnosis requires stressor criterion A1 as well as 1/4 re-experiencing symptoms, 1/2 avoidance symptoms, and specific amnesia OR 2/5 hyperarousal symptoms. ICD-11 three-factor diagnosis requires stressor criterion A1 as well as 1/2 of re-experiencing symptoms, 1/2 avoidance symptoms, 1/2 hyperarousal symptoms, and impairment. ICD-11 two-factor diagnosis requires stressor criterion A1 as well as 2/4 of re-experiencing symptoms or avoidance symptoms, 1/2 hyperarousal symptoms, and impairment
  2. Bolded numbers indicate when the diagnostic criteria are met