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Comparison of a Step-Up Versus a Step-Down Treatment Strategy for Patients With New Onset Dyspepsia in General Practice (The DIAMOND-Study)

Comparison of an Antacid/H2-Receptor Antagonist/Proton Pump Inhibitor Versus a Proton Pump Inhibitor/H2-Receptor Antagonist/Antacid Treatment Strategy for Patients With New Onset Dyspepsia in General Practice (The DIAMOND-Study)

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00247715
Enrollment
664
Registered
2005-11-02
Start date
2003-10-31
Completion date
2007-01-31
Last updated
2007-08-29

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

Conditions

Dyspepsia, Gastrointestinal Diseases

Keywords

uninvestigated dyspepsia, cost effectiveness, acid suppressive medicine, primary care, gastrointestinal complaints, Gastrointestinal drugs

Brief summary

The purpose of this study was to determine which treatment strategy, the step-up or the step-down treatment strategy, is the most cost-effective treatment for patients with new onset dyspepsia in primary care.

Detailed description

Dyspepsia is very common in the population. On an annual basis, 20%-40% of the general population suffers from upper gastrointestinal symptoms. The prevalence of dyspepsia presenting in primary care is about 3%, on average 24% of these patients are referred for secondary care in the same year. In spite of consensus statements and guidelines, the most effective treatment strategy for managing dyspepsia in primary care remains to be determined. In 2000 the Health Council of the Netherlands published some advice for the Minister of Health, Welfare and Sport with special consideration to the most cost-effective strategies for the management of dyspepsia. The Health Counsel Committee agrees in general with the existing guidelines of the Dutch College of General Practitioners to start with empirical treatment. However, the committee concluded that more research is necessary for management of dyspepsia in primary care, especially in uninvestigated patients as most research has been conducted in patients with persistent dyspeptic symptoms referred for secondary care. Comparison: In this study empirical treatment according to the existing guidelines of the Dutch College of General Practitioners (the step-up treatment strategy) is compared to a step-down treatment strategy. According to this step-down treatment strategy the patient begins treatment with a proton pomp inhibitor, which is an expensive acid-suppressor and is often prescribed by general practitioners. Step-up strategy: Algeldrate-magnesium oxide, in case of persisting/relapsing symptoms continued with ranitidine, if necessary continued with pantoprazole. Step-down strategy: Pantoprazole, in case of persisting or relapsing symptoms continued with ranitidine, if necessary continued with algeldrate-magnesium oxide.

Interventions

DRUGalgeldrate/magnesium oxide
DRUGranitidine
DRUGpantoprazole

Sponsors

ZonMw: The Netherlands Organisation for Health Research and Development
CollaboratorOTHER
Radboud University Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Presence of a new episode of dyspepsia, defined as episodic or persistent symptoms including abdominal pain or discomfort and which are, in the opinion of the general practitioner, referable to the upper gastrointestinal tract. * Over 18 years of age * Informed consent (written) given.

Exclusion criteria

* Use of prescribed acid suppressive medication during 3 months before consult * Investigated by upper gastrointestinal endoscopy one year before inclusion * Malignancy * Contraindication to the study medication * Pregnancy * Alarming symptoms like weight loss, bleeding, and disturbed food passage * Patients with insufficient comprehension of the Dutch language

Design outcomes

Primary

MeasureTime frame
Cost-efficacy6 months

Secondary

MeasureTime frame
Severity of gastrointestinal symptoms2 weeks, after each treatment steps, and 6 months
Quality of life2 weeks, after each treatment step, and 6 months
Genetic and psychosocial determinantsbaseline and 6 months
Patient compliance after treatment0 to 6 months

Countries

Netherlands

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 4, 2026