Changes in Person-reported Outcomes and Behavior Using the Accu-Chek SmartGuide CGM and Predict App
Changes in Person-reported Outcomes and Behavior Due to a Predictive Algorithm: A Pre-post Trial With the Accu-Chek SmartGuide CGM and the Predict App Solution
The goal of this controlled pre-post-trial is to test the Accu-Chek SmartGuide continuous glucose monitoring (CGM) system and whether its predictive features provide additional benefits for adults with type 1 diabetes or insulin- treated type 2 diabetes.
The main questions this study aims to answer are:
- Does using the Accu-Chek SmartGuide together with the Predict App change participants' fear of hypoglycemia?
- Does the Predict App affect other psychological and behavioral outcomes, such as sleep quality, confidence in preventing hypoglycemia, diabetes- related distress, and diabetes empowerment?
- Does the use of the predictive features affect glucose levels and the way participants use and respond to CGM alarms and trend information?
Participants will use the Accu-Chek SmartGuide for 6 weeks. During the first 2 weeks, participants will use the CGM system without the predictive features. During the following 4 weeks, participants will use the system together with the Accu-Chek SmartGuide Predict App. Participants will complete online questionnaires at two time points (after 2 and after 6 weeks) and answer short questions twice a day through a smartphone app during the first 2 weeks and the last 2 weeks of the study. CGM data will be collected throughout the study. A subgroup of 10 participants will also be invited to take part in an online interview about their experiences with the predictive features.
Studienübersicht
Status
Status
Bedingungen
Bedingungen
- Diabetes Mellitus
- Diabetes mellitus Typ 2
- Schlafqualität
- Ökologische Momentanbewertung
- System zur kontinuierlichen Glukoseüberwachung
- Diabetes (DM)
- Diabetes-Not
- Angst vor Hypoglykämie
- Diabetes mellitus Typ 1
- Glykämische Reaktionen
- Glykämische Variabilität
- Diabetes mellitus (Typ 1 und Typ 2)
- Vorhersage
- Glukosekontrolle
Intervention / Behandlung
Intervention / Behandlung
Detaillierte Beschreibung
Continuous glucose monitoring (CGM) is widely used by people with insulin- treated diabetes to monitor glucose levels and support daily diabetes management. The Accu-Chek SmartGuide CGM system provides continuous glucose measurements and includes predictive features that are intended to provide information about possible future glucose trends.
This study will investigate the use of the Accu-Chek SmartGuide with and without these predictive features in adults with type 1 diabetes or type 2 diabetes treated with intensified insulin therapy. The study will be conducted remotely in Germany through the dia*link online panel. No in-person study visits are planned.
Participants will use the Accu-Chek SmartGuide CGM system for a total of 6 weeks. The study consists of two consecutive phases. During the first 2 weeks, participants will use the Accu-Chek SmartGuide CGM without the Predict App and therefore without the predictive features. This phase provides a period in which CGM data and self-reported outcomes can be assessed before the predictive features are introduced. After 2 weeks, participants will receive training on the Predict App and begin a 4-week period using the Accu-Chek SmartGuide together with the Predict App.
Participants will complete online questionnaires at the end of the first 2 weeks and at the end of the 6-week study period. The questionnaires assess fear of hypoglycemia, sleep quality, confidence in preventing hypoglycemia, diabetes- related distress, and diabetes empowerment.
During the first 2 weeks and the last 2 weeks of the study, participants will also complete short ecological momentary assessment (EMA) questionnaires twice daily using a smartphone app. The morning assessment asks about sleep quality and confidence in preventing hypoglycemia. The evening assessment asks about the use and evaluation of CGM functions, including trend arrows, alarms, and predictive features. Participants will also be asked about possible therapy adjustments, satisfaction with the CGM functions, and diabetes- related distress, including distress related to hypoglycemia, hyperglycemia, and glucose variability.
CGM data will be collected throughout both study phases. These data will include measures such as time in glucose ranges, hypoglycemia, hyperglycemia, glucose variability, and mean glucose levels. The study will assess changes in these measures between the two study phases.
The primary outcome is the change in fear of hypoglycemia during the 4-week period in which participants use the Accu-Chek SmartGuide together with the Predict App. Secondary outcomes include changes in other psychosocial outcomes, diabetes-related behaviors, use and evaluation of CGM alarms and trend arrows, and CGM-derived glucose measures.
In addition, a subgroup of 10 participants will be invited to take part in a semi-structured online interview after completing the study. The interviews will explore participants' experiences with the predictive features, their confidence and trust in these features, perceived benefits in everyday diabetes management, and suggestions for improvement. Participants will be selected to achieve a balanced representation with regard to age, sex, and type of diabetes.
Studientyp
Studientyp
Einschreibung (Geschätzt)
Einschreibung
Phase
Phase
- Unzutreffend
Kontakte und Standorte
Studienkontakt
Studienkontakt
- Name: Dominic Ehrmann, Prof. Dr.
- Telefonnummer: +49 7931 96192 42
- E-Mail: ehrmann@fidam.de
Studienorte
-
-
Baden-Wurttemberg
-
Bad Mergentheim, Baden-Wurttemberg, Deutschland, 97980
- Rekrutierung
- Fidam Rdc
-
Kontakt:
- Dominic Ehrmann, Prof. Dr.
- Telefonnummer: +49 7931 96192 42
- E-Mail: ehrmann@fidam.de
-
-
Teilnahmekriterien
Zulassungskriterien
Zulassungskriterien
Studienberechtigtes Alter
- Erwachsene
- Älterer Erwachsener
Akzeptiert gesunde Freiwillige
Beschreibung
Inclusion Criteria:
- Type 1 diabetes or Type 2 diabetes with intensified insulin therapy (defined as basal-bolus therapy with self-adjustment of bolus doses)
- CGM use during the past 3 months (without predictive features)
- Age ≥ 18 years
- HbA1c < 10%
- Informed consent
Exclusion Criteria:
- Use of the SmartGuide CGM solution
- AID use
- Current treatment with psychiatric medications
- Diabetes duration < 3 months
- Current or planned pregnancy
- Peripheral neuropathy that will impact sleep quality according to the judgement of the participant
- Severe complications (e.g. kidney disease, cancer)
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Nicht randomisiert
- Interventionsmodell: Einzelgruppenzuweisung
- Maskierung: Keine (Offenes Etikett)
Anzahl der Arme
Waffen und Interventionen
Teilnehmergruppe / ArmTeilnehmergruppe / Arm |
Intervention / BehandlungIntervention / Behandlung |
|---|---|
|
Aktiver Komparator: SmartGuide CGM without Predict App
|
SmartGuide CGM without Predict App Accu-Check SmartGuide CGM solution will be tested without the prediction function
Andere Namen:
|
|
Experimental: SmartGuide CGM with Predict App
|
SmartGuide CGM + Predict App Accu-Check SmartGuide CGM solution will be tested with the added benefit of the prediction function
Andere Namen:
|
Was misst die Studie?
Primäre Ergebnismessungen
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Fear of hypoglycemia (HFS-II)
Zeitfenster: At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
Within-person change in fear of hypoglycemia from baseline to follow-up, assessed via the Hypoglycemia-Fear Survey II questionnaire
|
At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
Sekundäre Ergebnismessungen
Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
|---|---|---|
|
Overall sleep quality (PSQI)
Zeitfenster: At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
Changes will be analyzed using a questionnaire
|
At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
|
Hypoglycemia confidence (HCS)
Zeitfenster: At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
Changes will be analyzed using a questionnaire
|
At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
|
Diabetes distress (DDS)
Zeitfenster: At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
Changes will be analyzed using a questionnaire: Diabetes distress (DDS: total score + subscale scores), Hypoglycemia-related distress, Powerlessness
|
At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
|
Diabetes Empowerment (DES-SF)
Zeitfenster: At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
Changes will be analyzed using a questionnaire
|
At baseline (after 2 weeks from enrollment) and at follow-up (after 4 weeks from baseline)
|
|
Daily sleep quality
Zeitfenster: 14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
Changes will be analyzed on a daily level using Ecological Momentary Assessment (EMA)
|
14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
|
Avoidance of hypos
Zeitfenster: 14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
Changes will be analyzed on a daily level using Ecological Momentary Assessment (EMA)
|
14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
|
Time with diabetes and glycemic-specific distress
Zeitfenster: 14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
Changes will be analyzed on a daily level using Ecological Momentary Assessment (EMA)
|
14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
|
Changes in behavior
Zeitfenster: 14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
Use of and reaction to trend arrows, Use of and reaction to glucose alarms, Settings of glucose alarms, Use of and reaction to predictive features
|
14 days after enrollment and 14 days before study end with two prompts per day (morning & evening)
|
|
Changes in glycemic outcomes
Zeitfenster: From enrollment to the end of the study at 6 weeks
|
% 70-180 mg/dl, % 70-140 mg/dl, % < 70 mg/dl, % > 180 mg/dl, % < 54 mg/dl, % > 250 mg/dl, Glucose variability (Coefficient of variation), Mean glucose
|
From enrollment to the end of the study at 6 weeks
|
|
Personal experiences
Zeitfenster: After the study period of 6 weeks
|
Qualitative interviews to gain deeper insights into the personal experiences, expectations, handling, perceived advantages and disadvantages, wishes, etc. of users
|
After the study period of 6 weeks
|
Mitarbeiter und Ermittler
Sponsor
Sponsor
Mitarbeiter
Mitarbeiter
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- Ehrmann D, Laviola L, Priesterroth LS, Hermanns N, Babion N, Glatzer T. Fear of Hypoglycemia and Diabetes Distress: Expected Reduction by Glucose Prediction. J Diabetes Sci Technol. 2024 Sep;18(5):1027-1034. doi: 10.1177/19322968241267886. Epub 2024 Aug 19.
- Glatzer T, Ehrmann D, Gehr B, Penalba Martinez MT, Onvlee J, Bucklar G, Hofer M, Stangs M, Wolf N. Clinical Usage and Potential Benefits of a Continuous Glucose Monitoring Predict App. J Diabetes Sci Technol. 2024 Sep;18(5):1009-1013. doi: 10.1177/19322968241268353. Epub 2024 Aug 19.
- Hussain S, Polonsky W, Scibilia R, Glatzer T. Beyond the Trend Arrow: Potential Value of Artificial Intelligence-Supported Glucose Predictions for People with Type 1 Diabetes Using Continuous Glucose Monitoring Systems. Diabetes Technol Ther. 2025 Nov;27(11):943-949. doi: 10.1089/dia.2025.0293. Epub 2025 May 29.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn (Tatsächlich)
Studienbeginn
Primärer Abschluss (Geschätzt)
Primärer Abschluss
Studienabschluss (Geschätzt)
Studienabschluss
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Tatsächlich)
Zuerst gepostet
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Tatsächlich)
Letztes Update gepostet
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Schlüsselwörter
Zusätzliche relevante MeSH-Bedingungen
- Erkrankungen des endokrinen Systems
- Erkrankungen des Nervensystems
- Psychische Störungen
- Stoffwechselerkrankungen
- Autoimmunerkrankungen
- Erkrankungen des Immunsystems
- Störungen des Glukosestoffwechsels
- Schlaf-Wach-Störungen
- Schlafstörungen, intrinsisch
- Dyssomnien
- Ernährungs- und Stoffwechselerkrankungen
- Diabetes mellitus, Typ 2
- Diabetes Mellitus
- Schlafeinleitungs- und -erhaltungsstörungen
- Diabetes mellitus, Typ 1
- Untersuchungstechniken
- Klinische Labortechniken
- Diagnosetechniken und Verfahren
- Diagnose
- Blutchemische Analyse
- Klinische Chemie -Tests
- Diagnosetechniken, endokrin
- Überwachung, physiologisch
- Kontinuierliche Glukoseüberwachung
Andere Studien-ID-Nummern
Andere Studien-ID-Nummern
- FIDAM-IIS-2501
Plan für individuelle Teilnehmerdaten (IPD)
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Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt
Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt
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