Autonomy-enhancing therapy for eating disorders

Autonomy-enhancing therapy for eating disorders - AET and ED

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

NL-OMON

Registry ID

NL-OMON53339

Enrollment

Registered

2023-06-07

Start date

2024-03-05

Completion date

Unknown

Last updated

2026-07-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Anorexia Nervosa Boulimia Nervosa Eating disorder

Interventions

Baseline consists of 5 to 13 weeks of treatment as usual in stage two of treatment. The investigational treatment, AET, consists of weekly 2-hour sessions following the AET-protocol (Bekker et al.

Eligibility

Age

18 Years to 64 Years

Inclusion criteria

Inclusion criteria: Being in the final phase of treatment at the Multidisciplinary Center of Eating disorders after completing the AN or BN daycare treatment track.

Exclusion criteria

Exclusion criteria: Patients who have not given informed consent to use their data for scientific purposes. No patients with a BMI lower than 15 are found in the final stage of treatment, excluding them naturally from this study as well. No patients younger than 18 years old are found in the final stage of treatment, excluding them naturally from this study as well.

Design outcomes

Primary

Measure	Time frame
Multiple Baseline Design The Eating Disorder Examination Questionnaire - Short (Gideon et al., 2016) is a brief, reliable and valid measure of eating disorder symptom severity. It consists of 12 items and was developed for routine, including session-by-session and outcome assessment. Gideon et al. found that it performs similarly to the EDE-Q lending itself for the use of sessional outcome monitoring in treatment and research (2016). The Autonomy-Connectedness Scale (revised) (ACS-30) is an amended version of the Autonomy-Connectedness measure, the ACS-30 (Bekker & van Assen, 2006). As the ACS-30 does not allow for measuring short-term changes, we adapted it to the ACS-30-S. The ACS-30-S instruction asks about participants* experiences during the past week (instead of Usually, as in the original ACS-30). Existing questions have been rephrased where timing is concerned (e.g. I often long for* has been changed to I have longed for). The ACS-30-S has been reviewed by a convenience sample to assess acceptability and feasibility, after which a few changes were made, concerning questions that were hard to answer on a weekly basis (e.g. When making important decisions about my life, I leave other peoples* opinions and wishes out of consideration* was changed to When making decisions I leave other peoples opinions and wishes out of consideration*.) This process was repeated until the questionnaire was easy to use. Psychometric properties of the ACS-30-S will be conducted in the course of this study.) Repeated Measures design The Autonomy-Connectedness Scale (ACS-30) (Bekker & van Assen, 2006) consists of 30 items and three subscales: Self-awareness, Sensitivity to others, and Capacity for managing new situations. All items are measured on a 5-point Likert scale, running from 1 (disagree) to 5 (agree). The ACS-30 has been shown to have good psychometric properties. Norm scores are available and, agreeing with ACs gender-sensitivity, sepa	—

Measure

Time frame

Multiple Baseline Design The Eating Disorder Examination Questionnaire - Short (Gideon et al., 2016) is a brief, reliable and valid measure of eating disorder symptom severity. It consists of 12 items and was developed for routine, including session-by-session and outcome assessment. Gideon et al. found that it performs similarly to the EDE-Q lending itself for the use of sessional outcome monitoring in treatment and research (2016). The Autonomy-Connectedness Scale (revised) (ACS-30) is an amended version of the Autonomy-Connectedness measure, the ACS-30 (Bekker & van Assen, 2006). As the ACS-30 does not allow for measuring short-term changes, we adapted it to the ACS-30-S. The ACS-30-S instruction asks about participants* experiences during the past week (instead of *Usually*, as in the original ACS-30). Existing questions have been rephrased where timing is concerned (e.g. *I often long for** has been changed to *I have longed for**). The ACS-30-S has been reviewed by a convenience sample to assess acceptability and feasibility, after which a few changes were made, concerning questions that were hard to answer on a weekly basis (e.g. *When making important decisions about my life, I leave other peoples* opinions and wishes out of consideration* was changed to *When making decisions I leave other peoples* opinions and wishes out of consideration*.) This process was repeated until the questionnaire was easy to use. Psychometric properties of the ACS-30-S will be conducted in the course of this study.) Repeated Measures design The Autonomy-Connectedness Scale (ACS-30) (Bekker & van Assen, 2006) consists of 30 items and three subscales: Self-awareness, Sensitivity to others, and Capacity for managing new situations. All items are measured on a 5-point Likert scale, running from 1 (disagree) to 5 (agree). The ACS-30 has been shown to have good psychometric properties. Norm scores are available and, agreeing with ACs gender-sensitivity, sepa

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Secondary

Measure	Time frame
The SCL-90 (Derogatis, 1994) consists of 90 items and 8 subscales. Norm scores are available for the general population and psychiatric patients. The reliability and validity of the SCL-90 are reported to be good. Self-esteem is measured with the RSES (Sinclair et al., 2010), which consists of 10 items and assesses global self-esteem. All items, containing positive and negative statements about the self, are rated on a 4-point Likert scale ranging from strongly agree to strongly disagree. The reliability and validity of the RSES are reported to be good (Schmitt & Allik, 2005). Quality of life is measured with the WHOQOL-BREF (The Whoqol Group, 1998), which consists of 26 items, including four Quality of life domains: physical health, psychological health, social relationships and environment. Additionally, two items examine general Quality of life. All items are rated on a 5-point Likert scale with 0 meaning not at all, never, very poor, or very dissatisfied, and 4 meaning completely, always, very good, or very satisfied. Psychometric properties have been studied in psychiatric outpatients and are reported to be good (Trompenaars et al., 2005)	—

Measure

Time frame

The SCL-90 (Derogatis, 1994) consists of 90 items and 8 subscales. Norm scores are available for the general population and psychiatric patients. The reliability and validity of the SCL-90 are reported to be good. Self-esteem is measured with the RSES (Sinclair et al., 2010), which consists of 10 items and assesses global self-esteem. All items, containing positive and negative statements about the self, are rated on a 4-point Likert scale ranging from *strongly agree* to *strongly disagree*. The reliability and validity of the RSES are reported to be good (Schmitt & Allik, 2005). Quality of life is measured with the WHOQOL-BREF (The Whoqol Group, 1998), which consists of 26 items, including four Quality of life domains: physical health, psychological health, social relationships and environment. Additionally, two items examine general Quality of life. All items are rated on a 5-point Likert scale with 0 meaning *not at all*, *never*, *very poor*, or *very dissatisfied*, and 4 meaning *completely*, *always*, *very good*, or *very satisfied*. Psychometric properties have been studied in psychiatric outpatients and are reported to be good (Trompenaars et al., 2005)

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Countries

Netherlands

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP) · Data processed: Jul 23, 2026