Page 59 - Post-traumatic stress disorder in adults with mild intellectual disability: Screening, assessment, and brief intensive EMDR therapy

Development and evaluation of TS-ID
fits the optimal ratio of specificity to sensitivity in predicting diagnosis
according to a structured PTSD interview.
Methods
Participants and Setting
Adults with MID-BIF who were living in supported housing of two ID care
services in the Netherlands (‘s Heeren Loo and Trajectum) were informed
about the study by their treatment staff. The inclusion criteria were that
participants were diagnosed with MID or BIF, were at least 18 years old and
had sufficient Dutch language ability. The exclusion criteria were suicidality,
alcohol/drug use and use of serious sedating medications (e.g. anxiolytics).
Participation in this study was voluntary. All clients interested in participating
received an information letter. The study protocol received approval from
the Medical Research Ethics Committee, East Netherlands (reference
number: 2020-6967-NL75909.091.20). One hundred participants provided
written informed consent to participate in this study. For participants who
lacked the capacity to provide formal consent a legal representative was
asked to provide the consent.
Data were collected from 97 participants (three participants did not
complete the Diagnostic Interview Trauma and Stressors-Intellectual
disability [DITS-ID]). For five of the 97 participants, only the TS-ID adult
version was completed. For the remaining 92 participants, both the TS-
ID adult version and the TS-ID proxy version were completed. There were
55 women (57%) and 42 men (43%) between 18 and 73 years of age
(M = 32; SD = 14.1). IQ scores were available for 92 participants. The mean
IQ was 68 (range: 50–85; SD = 9.4). For five participants, no IQ scores were
found in their client files, but their files specified that they were diagnosed
with MID. Among 37 participants (38%), we found the presence of at least
one DSM-5 classification (American Psychiatric Association [APA], 2013)
in their client file: 20 participants (21%) had autism spectrum disorder, 11
(11%) attention deficit hyperactivity disorder (ADHD), seven (7%) PTSD,
three (3%) personality disorder, four (4%) mood disorder, and two (2%)
anxiety disorder. The 92 individuals who completed the TS-ID proxy version
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