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Clinical Trials/NCT01200849
NCT01200849
Completed
Not Applicable

Enhanced Spanish Drug Label Design to Promote Patient Understanding and Use

Northwestern University1 site in 1 country420 target enrollmentOctober 2010

Overview

Phase
Not Applicable
Intervention
Not specified
Conditions
Medication Understanding
Sponsor
Northwestern University
Enrollment
420
Locations
1
Primary Endpoint
Understanding of prescription medication
Status
Completed
Last Updated
11 years ago

Overview

Brief Summary

The overall objective of this study is to test the efficacy of an evidence-based, enhanced Rx container label design to improve Spanish speaking patients' understanding of instructions for use.

Detailed Description

The investigators will conduct a randomized controlled trial (N=960) to evaluate the efficacy of the enhanced Rx container label to improve, Spanish speaking, diabetic and/or hypertensive patients' understanding of actual prescribed medicines, compared to a standard label format. Spanish-speaking patients with type II diabetes and/or hypertension at safety-net clinics affiliated with one central-fill pharmacy (Nova Scripts Central - NSC) receive all their prescribed medicines from this location. Recruited diabetic and/or hypertensive subjects in this study will be randomly assigned to either intervention (enhanced Rx container label) or control (standard Rx label). All pill-form, regular dosing schedule medicines, including diabetes and hypertensive (i.e. ACE inhibitor) medicines associated with patients' treatment will be labeled according to study arm by the central-fill pharmacy. Study subjects will be interviewed at the time of dispensing the prescribed medicines at the clinic, again three months later (dispensing of refill), and finally nine months after baseline (dispensing of refill). Pharmacy refill data and medical record information - linked at these clinics - will be collected for exploratory analyses. Patients' ability to read and demonstrate Rx label instructions, including auxiliary warnings, will be the primary outcomes for this aim. Data from the actual use trial will be processed, reviewed, analyzed (in order of hypotheses), and reports prepared during the final months of this last phase of the study. We anticipate several manuscripts to be developed as a result of this project, supported by the diverse key personnel and collaborating faculty enlisted.

Registry
clinicaltrials.gov
Start Date
October 2010
End Date
January 2014
Last Updated
11 years ago
Study Type
Interventional
Study Design
Parallel
Sex
All

Investigators

Responsible Party
Principal Investigator
Principal Investigator

Michael S. Wolf

Professor

Northwestern University

Eligibility Criteria

Inclusion Criteria

  • Diagnosis of Type II diabetes or hypertension in their medical chart
  • Spanish speaking
  • 30 years or older

Exclusion Criteria

  • Uncorrectable hearing or visual impairment.
  • Too ill to participate

Outcomes

Primary Outcomes

Understanding of prescription medication

Time Frame: Baseline, 3 month follow-up, 9 month follow-up

Difference in understanding and comprehension of medication use as compared to control.

Secondary Outcomes

  • Change in HbA1c or blood pressure readings(Baseline, 3 month follow-up, 9 month follow-up)

Study Sites (1)

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