REALL: A Retrospective Observational Study to Compare the Effectiveness and Cost-Effectiveness Between Different Step-3 Asthma Treatment Strategies (REALL)

February 26, 2016 updated by: University of Aberdeen

REALL STUDY: A Retrospective Observational Study to Compare the Effectiveness and Cost-effectiveness Between Different Step-3 Asthma Treatment Strategies in Real Life Patients in Primary Care

This is a retrospective observational study utilising anonymised individual patient clinical and prescribing information routinely collected by UK General Practitioners (GPs). This information will be observed for two years, one year pre and one year post- "Index Prescription Date" (IPD). The IPD is the date when a patient was first switched to any option of the step-3 asthma treatment regimen. The one year before the IPD is the baseline period and will be reviewed for risk factors and confounding factors. The one year after the IPD is the outcome period and will be observed to see the outcomes of the new treatment.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

50000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

  1. Patients with a physician diagnosis of asthma who have stepped-up to any option of step-3 asthma treatment (trial therapy), and;
  2. Patients with the trial therapy who have data in their records for at least one year for the baseline period and at least one year for the outcome period.

Description

Inclusion Criteria:

  1. Patients with a physician diagnosis of asthma who have stepped-up to any option of step-3 asthma treatment (trial therapy), and;
  2. Patients with the trial therapy who have data in their records for at least one year for the baseline period and at least one year for the outcome period.

Exclusion Criteria:

  1. Patients who were not prescribed with any option of step-3 treatment (the trial therapy) during the study period.
  2. Patients treated with the trial therapy, but do not have data in their records for at least one year for the baseline period and at least one year for the outcome period.
  3. Patients treated with long-acting anticholinergic drugs, either alone or in combination with other therapy.
  4. Patients with a physician diagnosis of COPD with or without asthma.
  5. Patients who have resolved from asthma; i.e. patients who were previously diagnosed as having asthma, have now been undiagnosed.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Time Perspectives: Retrospective

Cohorts and Interventions

Group / Cohort
1
Asthma patients

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
The achievement of asthma control. This will be assessed by evaluating the patient data for one year in the outcome period. On this basis patients will be divided into two groups
Time Frame: 1 year
1 year

Secondary Outcome Measures

Outcome Measure
Time Frame
The asthma control will be monitored, directly from patients' point of view, by Royal College of Physician (RCP) 3 questions at least after 6 months of IPD (British Thoracic Society (BTS) July, 2007).
Time Frame: 1 year
1 year

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Aberdeen

Investigators

  • Principal Investigator: David Price, University of Aberdeen

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2007

Primary Completion (Actual)

December 1, 2015

Study Completion (Actual)

December 1, 2015

Study Registration Dates

First Submitted

January 31, 2008

First Submitted That Met QC Criteria

February 26, 2008

First Posted (Estimate)

March 5, 2008

Study Record Updates

Last Update Posted (Estimate)

February 29, 2016

Last Update Submitted That Met QC Criteria

February 26, 2016

Last Verified

February 1, 2016

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GP501RGD0685

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Asthma

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Canada

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

3
Subscribe