Serious physical assault and subsequent risk for rehospitalization in individuals with severe mental illness: a nationwide, register-based retrospective cohort study

Table 1 Characteristics of the sample

	Exposed	Unexposed
Age on last SMI hospitalization, mean (SD) ^a	36.34 (12.33)	36.34 (12.31)
Males, % (n) ^a	62.90 (156)	62.90 (780)
Last SMI diagnosis before the start of follow-up, % (n) ^a
Schizophrenia F20.0–F20.9	36.69 (91)	36.69 (455)
Schizoaffective disorder F25.0–F25.9	15.73 (39)	15.73 (195)
Bipolar disorder F31.0–F31.9	7.66 (19)	7.66 (95)
Major depressive disorder, single episode F32.0–F32.9	27.82 (69)	27.82 (345)
Major depressive disorder, recurrent episode F33.0–F33.9	12.10 (30)	12.10 (150)
Comorbid DUD in the last 7 years before victimization, % (n)^b **	5.65 (14)	1.94 (24)
Number of SMI hospitalizations in the last 7 years before victimization, median (IQR)^b **	2 (2)	1 (1)

^aThe unexposed individuals were matched with exposed on gender, age and last SMI diagnosis; therefore, the distribution on these variables is identical
For the comparison on comorbid DUD, a Chi-square test was used. For the comparison on number of SMI rehospitalizations, a Mann–Whitney U test was used
^bThe unexposed individuals did not experience an actual victimization-related hospitalization. Thus, the presence of DUD and the number of SMI hospitalizations in unexposed individuals was assessed using a generated time windows copying the time windows of the exposed individuals with which they were matched
^**p value of the test was lower than 0.01

ISSN: 1744-859X