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Table 4 Group comparisons (HC, DD+, 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+ vs. PTSD patients
n = 59
DD vs. PTSD patients
n = 79
DD vs. HC
n = 80
DD+ vs. DD
n = 60
Symptom severity
 SDQ H(3) = 77.61
p < .001
U = 332.5, z = −3.20
n.s.
U = 394.5, z = −3.78
p < .001
r = −0.41
U = 172.5, z = −6.08
p < .001
r = −0.68
U = 151.5, z = −3.51
p < .001
r = −0.45
 DES H(3) = 78.20
p < .001
U = 197.5, z = −3.08
p = .014
r = −0.40
U = 150.5, z = −6.17
p < .001
r = −0.61
U = 528.5, z = −2.61
n.s.
U = 168.5, z = −3.63
p < .001
r = −0.47
 PDS_Sym H(3) = 102.77
p < .001
U = 267.5, z = −1.96
n.s.
U = 54.5, z = −7.13
p < .001
r = −0.8
U = 402.5, z = −4.09
p < .001
r = −0.46
U = 37, z = −5.72
p < .001
r = −0.74
Adversity/trauma measures
 KERF_Sum H(3) = 61.63
p < .001
U = 169, z = −2.71
p = .049
r = −0.35
U = 195.5, z = −5.38
p < .001
r = −0.61
U = 510, z = −2.5
n.s.
U = 203, z = −2.19
n.s.
 KERF_Phy H(3) = 49.98
p < .001
U = 183, z = −2.65
n.s.
U = 277, z = −4.73
p < .001
r = −0.53
U = 481.5, z = −2.8
p = 0.03
r = −0.31
U = 271, z = −0.95
n.s.
 KERF_Emo H(3) = 66.10
p < .001
U = 194.5, z = −2.44
n.s.
U = 183, z = −5.69
p < .001
r = −0.63
U = 512.5, z = −2.47
n.s.
U = 169.5, z = −2.80
p = .035
r = −0.36
 Mace_Sex H(3) = 53.50
p < .001
U = 173, z = −2.94
p = .021
r = −0.38
U = 299.5, z = 4.99
p < .001
r = −0.56
U = 676.5, z = −1.81
n.s.
U = 287.5, z = −1.00
n.s.
 PDS_Event H(3) = 52.07
p < .001
U = 301.5, z = −1.45
n.s.
U = 407, z = −3.72
p < .001
r = −0.42
U = 424.5, z = 3.67
p < .001
r = −0.41
U = 291.5, z = −1.73
n.s.
Alexithymia
 TAS-26 H(3) = 74.97
p < .001
U = 211, z = −2.87
p = .028
r = −0.37
U = 197, z = −5.72
p < .001
r = −0.64
U = 325.0, z = 4.58
p < .001
r = −0.51
U = 226, z = −2.73
p = 0.042
r = −0.35
  1. Note. HC healthy comparison participants, DD patients diagnosed with dissociative disorder without co-occuring PTSD, DD + patients diagnosed with dissociative disorder with co-occuring PTSD, 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]