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Table 3 Group comparisons (HC, DD, PTSD) – inferential statistics of symptom severity, adversity/trauma measures and alexithymia scores

From: Somatoform dissociation and posttraumatic stress syndrome – two sides of the same medal? A comparison of symptom profiles, trauma history and altered affect regulation between patients with functional neurological symptoms and patients with PTSD

  Comparison across groups DD patients vs. HC
n = 100
PTSD patients vs. HC
n = 79
DD patients vs. PTSD patients
n = 99
Symptom severity
 SDQ-20 H(2) = 70.62
p < .001
U = 172.5, z = −7.17
p < .001
r = −0.72
U = 62, z = −7.07
p < .001
r = −0.80
U = 727, z = −2.98
p = .021
r = −0.30
 DES H(2) = 68.77
p < .001
U = 585, z = −4.33
p < .001
r = −0.43
U = 24.5, z = −7.41
p < .001
r = −0.83
U = 348, z = −5.89
p < .001
r = −0.59
 PDS_Sym H(2) = 82.23
p < .001
U = 402.5, z = −5.80
p < .001
r = −0.58
U = 0, z = −7.8
p < .001
r = −0.88
U = 322, z = −6.08
p < .001
r = −0.61
Adversity/trauma measures
 KERF_Sum H(2) = 57.55
p < .001
U = 610, p = −3.70
p < .001
r = −0.37
U = 49, z = −7.05
p < .001
r = −0.79
U = 364.5, z = −5.20
p < .001
r = −0.52
 KERF_Phy H(2) = 49.07
p < .001
U = 647.5, z = −3.43
p = .001
r = −0.34
U = 113.5, p = −6.55
p < .001
r = −0.73
U = 460, z = −4.70
p < .001
r = −0.47
 KERF_Emo H(2) = 60.12
p < .001
U = 606, z = −3.72
p < .001
r = −0.37
U = 47.5, z = −7.19
p < .001
r = −0.80
U = 377.5, z = −5.33
p < .001
r = −0.53
 KERF_Sex H(2) = 52.83
p < .001
U = 943.5, z = −2.22
n.s.
U = 226, z = −6.29
p < .001
r = −0.70
U = 472.5, z = −5.22
p < .001
r = −0.52
 PDS_Event H(2) = 49.32
p < .001
U = 536, z = −4.73
p < .001
r = −0.47
U = 108.5, z = −6.66
p < .001
r = −0.74
U = 708.5, z = −3.36
p = .007
r = −0.34
Alexithymia
 TAS-26 H(2) = 70.34
p < .001
U = 387, z = −5.72
p < .001
r = −0.57
U = 67.5, z = −6.99
p < .001
r = −0.78
U = 408, z = −5.46
p < .001
r = −0.54
  1. Note. HC healthy comparison participants, DD patients diagnosed with dissociative disorder, PTSD posttraumatic stress disorder, SDQ-20 severity of somatoform dissociative symptoms, verified by the Somatoform Dissociation Questionnaire, DES severity of psychoform dissociative symptoms, using the Dissociative Experience Scale, PDS_Sym load of posttraumatic symptoms, KERF_Sum overall exposure to childhood adversities, KERF_Phy physical maltreatment during childhood, KERF_Emo emotional neglect and maltreatment during childhood, KERF_Sex sexual violence during childhood, PDS_Event Sum of lifetime traumatic experience assessed with the Posttraumatic Diagnostic Scale, TAS-26 Alexithymia, assessed with the Toronto Alexithymia Scale. Effect sizes were calculated using the estimate “r” described by Rosenthal, 1991 [46]