Little is known about the association between trauma and intellectual disability in SMI patients.

To establish the prevalence of trauma and its association with intellectual functioning in SMI outpatients.

A cross-sectional study was conducted in two mental health trusts in the Netherlands. We used the Trauma Screening Questionnaire (TSQ) to screen for trauma and PTSD, and the Screener for Intelligence and Learning disabilities (SCIL) for suspected MID/BIF. Chi-square and t-tests were used to test differences in outcome over patient characteristics. Post-hoc analysis was used to investigate gender differences between patients with and without MID/BIF on trauma and sexual trauma.

Any trauma was found in 86% of 570 patients and 42% were suspected for PTSD. The SCIL suggested that 40% had Borderline Intellectual Functioning (BIF), half of whom were suspected of having Mild Intellectual Disability (MID). These patients had more traumatic experiences (1.89 in BIF, 1.75 in MID, against 1.41 in SCIL-negative patients). Female MID/BIF patients (61%) had experienced significantly more sexual abuse than male MID/BIF patients (23%).

Significantly more SMI outpatients who screened positive for MID/BIF reported having experienced traumatic events than those who screened negative. Rates of all trauma categories were significantly higher in the screen-positive group, who were also more likely to have PTSD. Sexual abuse occurred more in all females but the SCIL positive women are even more often victim. Clinical practice has to pay more attention to all of these issues, especially when they occur together in a single patient.

To evaluate the clinical benefits and associated cost effectiveness of an intensive personalised support (IPS) approach for clients suffering from psychosis and co-morbid mild intellectual disability (ID).

Four individuals with a psychotic disorder and co-morbid mild ID participated in an 18-month IPS rehabilitative intervention. Biopsychosocial measures were used to evaluate clinical effectiveness. A cost analysis was undertaken to examine the cost effectiveness of the intervention.

Reductions in psychopathology including anxiety symptoms were noted in all individuals. In addition, increased functioning and quality of life were demonstrated in all cases. Overall cost reductions were noted in inpatient care, accommodation and legal/emergency expenses.

The IPS approach was clinically effective particularly in addressing individual’s psychosocial needs, psychological functioning, daily living skills and overall quality of life. Costs had decreased for three of the four individuals, ranging from a 17% to 46% savings. The findings highlight that the intervention was cost effective in most cases at this early stage. However, further research is necessary in order to ascertain if cost savings occur over time.