Dissociation in schizophrenia and borderline personality disorder

Figures & data

Table 1 Comparison between schizophrenia and bipolar disorder using the Mann–Whitney U test

	Schizophrenia n=31	BPD n=36	MW Z	P-value	r Effect size
DES	13.7	18.54	−1.8	0.0730	0.36
TSC-40	34.1	54.19	−3.7	0.0002	0.95
HoNOS (E)	11.6	15	−2.6	0.0085	0.81
HoNOS (S)	7.8	14.25	−3.9	0.0000	0.97
EC	518.4	98.6	5.5	0	0.97

Abbreviations: BPD, bipolar disorder; DES, Dissociative Experiences Scale; TSC-40, Trauma Symptom Checklist-40; HoNOS (E), version for external evaluation of HoNOS (mean); HoNOS (S), self-rating version of HoNOS (mean); EC, day dosages of antipsychotic medication in equivalents of chlorpromazine (mean in mg); r, standardized effect size; MW, Mann–Whitney U test.

Table 2 Spearman correlation coefficients describing relationships of dissociation with other psychopathological symptoms and with doses of antipsychotic medication in patients with schizophrenia and borderline personality disorder

	EC		HoNOS (E)		HoNOS (S)		DES		DES-AB		DES-AM		DES-DD
	Sch	BPD	Sch	BPD	Sch	BPD	Sch	BPD	Sch	BPD	Sch	BPD	Sch	BPD
HoNOS (E)	0.2	0.04	–
HoNOS (S)	−0.22	0.28	0.48	0.7	–
DES	0.17	0.37	0.34	0.37	0.53	0.52	–
DES-AB	0.08	0.29	0.25	0.25	0.47	0.51	0.88	0.84	–
DES-AM	0.14	0.28	−0.02	0.25	0.17	0.26	0.64	0.76	0.5	0.67	–
DES-DD	−0.03	0.37	0.53	0.35	0.65	0.4	0.8	0.77	0.61	0.44	0.36	0.48	–
TSC-40	0.03	0.08	0.41	0.56	0.7	0.7	0.6	0.53	0.49	0.46	0.28	0.38	0.75	0.43

Notes: values at P<0.05 are in bold; Fisher’s exact test Z is higher than 0.05.

Abbreviations: EC, daily doses of antipsychotic medication in equivalents of chlorpromazine (mg); HoNOS (E), version for external evaluation of HoNOS; HoNOS (S), self-rating version of HoNOS; DES, Dissociative Experiences Scale; DES-AB, factor of absorption in DES; DES-AM, factor of amnesia in DES; DES-DD, factor for depersonalization/derealization of DES; TSC-40, Trauma Symptom Checklist-40; Sch, schizophrenia; BPD, borderline personality disorder.