Understanding Your Medical Appointment Better: Evaluating the Ditto App

From Consultation to Comprehension: A Randomized Controlled Trial of AI-Assisted Playback of Healthcare Conversations via the Ditto App on Patient Understanding and Engagement - From Consultation to Comprehension: A Randomized Controlled Trial of AI-Assisted Playback of Healthcare Conversations via the Ditto App on Patient Und

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

NL-OMON

Registry ID

NL-OMON61298

Enrollment

200

Registered

2026-06-22

Start date

2026-07-01

Completion date

Unknown

Last updated

2026-06-29

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

Conditions

Patients attending outpatient consultations in medical or surgical specialties Patients attending a hospital outpatient appointment

Interventions

Ditto application (please refer to background information)

Eligibility

Age

12 Years to 99 Years

Inclusion criteria

Inclusion criteria: New outpatient clinic patient visit scheduled at participating departmentsDutch or English-speakingAge =18 years (or parental/legal guardian consent for minors, if including pediatrics) Able and willing to provide informed consent

Exclusion criteria

Exclusion criteria: Cognitive or language impairments preventing meaningful use of Ditto app or survey completionSevere visual, auditory or motor impairments precluding interaction with app or survey completion

Design outcomes

Primary

Measure	Time frame
Response variablesIPQ-K questionnaire – A validated instrument used to assess patients’ cognitive and emotional representations of their illness, available in Dutch and English. Possible score range 7–70, with higher scores indicating better understanding and more coherent illness perception. Note: Question 7 (“In welke mate vindt u dat u uw ziekte begrijpt?”) will form the primary outcome, while the full questionnaire score will serve as a secondary outcome. Patient Activation Measure (PAM-13) – A validated 13-item questionnaire used to assess patients’ knowledge, skills, and confidence in managing their health. Possible score range 0–100, with higher scores indicating greater activation and engagement in care. Usability measures (intervention arm only) - A brief, focused set of questions assessing the perceived usefulness, clarity, and ease of use of the Ditto app (Appendix 1). Items were selected to minimize overlap with PAM-13 and IPQ-K. Responses are measured on a 0–100 slider scale (0 = strongly disagree, 100 = strongly agree), generating a total usability score ranging from 0–500. Explanatory variablesPatient demographics – age, sex/gender, educational level, employment statusVisit type – first participation in study, returning patientDisease factors – primary diagnosisClinical factors – specialty/department of consultation	—

Measure

Time frame

Response variablesIPQ-K questionnaire – A validated instrument used to assess patients’ cognitive and emotional representations of their illness, available in Dutch and English. Possible score range 7–70, with higher scores indicating better understanding and more coherent illness perception. Note: Question 7 (“In welke mate vindt u dat u uw ziekte begrijpt?”) will form the primary outcome, while the full questionnaire score will serve as a secondary outcome. Patient Activation Measure (PAM-13) – A validated 13-item questionnaire used to assess patients’ knowledge, skills, and confidence in managing their health. Possible score range 0–100, with higher scores indicating greater activation and engagement in care. Usability measures (intervention arm only) - A brief, focused set of questions assessing the perceived usefulness, clarity, and ease of use of the Ditto app (Appendix 1). Items were selected to minimize overlap with PAM-13 and IPQ-K. Responses are measured on a 0–100 slider scale (0 = strongly disagree, 100 = strongly agree), generating a total usability score ranging from 0–500. Explanatory variablesPatient demographics – age, sex/gender, educational level, employment statusVisit type – first participation in study, returning patientDisease factors – primary diagnosisClinical factors – specialty/department of consultation  

—

Secondary

Measure	Time frame
See above.	—

Countries

Netherlands

Contacts

Public ContactEH Jaarsma

Universitair Medisch Centrum Groningen

e.h.jaarsma@umcg.nl050 361 6161

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP) · Data processed: Jul 3, 2026