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Changes in Person-reported Outcomes and Behavior Using the Accu-Chek SmartGuide CGM and Predict App

5. september 2026 oppdatert av: Dominic Ehrmann, FIDAM RDC

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.

Studieoversikt

Status

Rekruttering

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

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.

Studietype

Intervensjonell

Registrering (Antatt)

89

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

  • Navn: Dominic Ehrmann, Prof. Dr.
  • Telefonnummer: +49 7931 96192 42
  • E-post: ehrmann@fidam.de

Studiesteder

  • Tyskland
    • Baden-Wurttemberg
      • Bad Mergentheim, Baden-Wurttemberg, Tyskland, 97980
        • Rekruttering
        • Fidam Rdc
        • Ta kontakt med:
          • Dominic Ehrmann, Prof. Dr.
          • Telefonnummer: +49 7931 96192 42
          • E-post: ehrmann@fidam.de

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

Beskrivelse

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)

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Ikke-randomisert
  • Intervensjonsmodell: Enkeltgruppeoppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Aktiv komparator: SmartGuide CGM without Predict App
Enhet: SmartGuide CGM without Predict App
SmartGuide CGM without Predict App Accu-Check SmartGuide CGM solution will be tested without the prediction function
Andre navn:
  • continuous glucose monitoring without predictive algorithm
  • CGM without predictive algorithm
  • Accu-Check SmartGuide CGM without Predict App
Eksperimentell: SmartGuide CGM with Predict App
Enhet: 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
Andre navn:
  • continuous glucose monitoring with predictive algorithm
  • CGM with predictive algorithm
  • Accu-Check SmartGuide CGM and Predict App

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Fear of hypoglycemia (HFS-II)
Tidsramme: 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)

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Overall sleep quality (PSQI)
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

FIDAM RDC

Samarbeidspartnere

Roche Diabetes Care

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. februar 2026

Primær fullføring (Antatt)

31. oktober 2026

Studiet fullført (Antatt)

31. oktober 2026

Datoer for studieregistrering

Først innsendt

5. september 2026

Først innsendt som oppfylte QC-kriteriene

5. september 2026

Først lagt ut (Faktiske)

11. september 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

11. september 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

5. september 2026

Sist bekreftet

1. september 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • FIDAM-IIS-2501

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