Evaluating a personalized treatment for substance use disorder in people with mild intellectual disability or borderline intellectual functioning: A study protocol of a multiple baseline across individuals design

Abstract

Background The prevalence of substance use disorder (SUD) in people with Mild Intellectual Disabilities or Borderline Intellectual Functioning (MID-BIF) is high. However, an effective personalized treatment for people with MID-BIF and SUD is lacking. This paper describes the study protocol of the effectiveness study of Take it Personal!+, a personalized treatment for people with MID-BIF and SUD. Methods The effectiveness of Take it Personal!+ in decreasing substance use will be assessed in a non-concurrent multiple baseline across individuals design comprising ten participants with MID-BIF and SUD. The participants with MID-BIF and SUD will be randomly allocated to one of the five baseline lengths (7–11 days). Substance use, will be assessed during baseline, intervention, and post-treatment phase using a daily diary method. Discussion If this study shows that Take it Personal!+ is effective in decreasing substance use, the gap in treatment for people with MID-BIF and SUD will be filled. Trial registration The study is registered in the Netherlands Trial Register (Trial NL4935, registered July 2, 2019).

Development of a personalised substance use disorder treatment for people with mild intellectual disabilities or borderline intellectual functioning: An intervention mapping approach

“…The frequency and quantity of SU are measured with a daily diary method during the first three phases. Additional information of SU will be gathered with the SumID-Q ( Van-DerNagel et al, 2011) during the baseline, posttreatment and follow-up phase (Gosens et al, 2020). Finally, the treatment process will be evaluated with a questionnaire filled out by therapists to examine the feasibility and user friendliness of Take it Personal!+.…”

The feasibility of daily monitoring in adolescents and young adults with mild intellectual disability or borderline intellectual functioning

“…Because prompting momentary surveys at random time-points increases the chance that the prompts reach the participant at an inconvenient moment, the frequency and timing of administering surveys may be of importance for keeping compliance rates high and drop-out low. Gosens et al (2020) were then the first to use daily dairy sampling through mobile phones in 12 young persons with a mild intellectual disability or borderline intellectual functioning who followed a treatment for problematic substance use. On average, they adhered to 71% of their diaries during a period ranging from 2 to 12 months depending on treatment duration (Gosens et al, 2023).…”

“…Two aspects of daily diary method by Gosens et al (2020) were relatively innovative. First, participants' daily entries were channelled back to the clinician during the sampling period, so that recent self-reported behavioural patterns could be discussed in therapy sessions (cf.…”

The feasibility of daily monitoring in adolescents and young adults with mild intellectual disability or borderline intellectual functioning

“…Because prompting momentary surveys at random time‐points increases the chance that the prompts reach the participant at an inconvenient moment, the frequency and timing of administering surveys may be of importance for keeping compliance rates high and drop‐out low. Gosens et al (2020) were then the first to use daily dairy sampling through mobile phones in 12 young persons with a mild intellectual disability or borderline intellectual functioning who followed a treatment for problematic substance use. On average, they adhered to 71% of their diaries during a period ranging from 2 to 12 months depending on treatment duration (Gosens et al, 2023).…”

“…Two aspects of daily diary method by Gosens et al (2020) were relatively innovative. First, participants' daily entries were channelled back to the clinician during the sampling period, so that recent self‐reported behavioural patterns could be discussed in therapy sessions (cf.…”