Impact of Information Prescriptions on Medication Adherence in Emergency Department (ED) Patients

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01174706
Recruitment Status : Unknown
Verified June 2011 by Johns Hopkins University.
Recruitment status was:  Recruiting
First Posted : August 4, 2010
Last Update Posted : June 27, 2011
National Library of Medicine (NLM)
Information provided by:
Johns Hopkins University

August 3, 2010
August 4, 2010
June 27, 2011
November 2010
September 2011   (Final data collection date for primary outcome measure)
Medication adherence [ Time Frame: one week after index ED visit ]
Self-reported medication adherence.For subjects discharged with a prescription medication or an over the counter (OTC) medication with a specified dosage and frequency, medication adherence will be measured by the number of doses taken divided by the number of doses specified.
Same as current
Complete list of historical versions of study NCT01174706 on Archive Site
Filling of prescription medicine [ Time Frame: within one week of index ED visit ]
This outcome will measure whether a patient filled the medication he was prescribed at ED discharge .
Same as current
Not Provided
Not Provided
Impact of Information Prescriptions on Medication Adherence in Emergency Department (ED) Patients
Impact of Information Prescriptions on Medication Adherence in ED Patients

The main objectives of this research are:

  1. To identify factors that influence medication adherence rates in Emergency Department (ED) patients.
  2. To measure the effects of alternative information prescriptions on medication adherence rates of ED patients.
  3. To measure the effects of alternative information prescriptions (IRxs) on health and service utilization.

People who are prescribed self-administered medications frequently take less than half the doses. Poor adherence to medication regimens is associated with worsening of disease, death and increased health care costs in the United States. The few studies conducted in the emergency department (ED) setting suggest that between 7 to 45 percent of patients do not fill their prescription; one study conducted in Canada reported that 45% of ED patients did not follow their prescribed regimen. One strategy that may improve medication adherence among ED patients is a better information exchange between the patient, provider and the health care system. This study will use a randomized controlled trial to test the effect that two alternative ways of delivering information prescriptions (IRxs) have on medication adherence and treatment outcomes of ED patients.

ED patients treated and released with a prescribed medication(s) from three hospitals serving different patient populations in the Baltimore metropolitan area over a 9 month period will be included in the study. Research assistants will consent eligible patients, interview them prior to ED discharge and randomize subjects to one of four study groups: (1) usual care (medication prescription and instructions provided at discharge); (2) practical assistance which consists of giving information to help subject obtain medicine (i.e. programs that offer drugs more cheaply, pharmacy hours of operation, etc)(3) an IRx that includes a MedlinePlus referral plus written information from MedlinePlus customized to the subject's health problem and prescribed medication; or (4) an IRx that consists of practical assistance and MedlinePlus referral plus customized written information from MedlinePlus plus access to information services provided by a medical librarian, herein referred to as a clinical informationist or informationist. Subjects will be contacted by telephone one week post ED visit and queried about medication use and patient outcomes (self-reported health, satisfaction with ED visit, and ED revisits or hospitalizations) and use of Internet to access health information. Medication instructions and ED discharge diagnosis data will be extracted from subjects' electronic medical record and use of informationist services documented. Medication adherence rates and patient outcomes will be compared among study groups. Self-reported use of MedlinePlus will also be compared to electronic data for all subjects. Self-reported medication and ED revisits/hospitalizations will be compared to pharmacy claims and utilization data for subjects covered by Medicaid.

Not Applicable
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Single (Investigator)
Primary Purpose: Health Services Research
  • Patient Compliance
  • Medication Adherence
  • Medication Non-Adherence
Behavioral: Information prescriptions
One arm will receive usual care at discharge. The other three arms will receive practical assistance and/or an information prescription which will consist of written information from Medline Plus and access to a clinical informationist if subject has additional information needs.
  • Experimental: Usual care arm
    Patients randomized to this group will receive usual care. Usual care at the three study sites varies but will be defined as whatever information is usually given to patients regarding the prescription medication or over the counter medicine they were prescribed at emergency department discharge.
    Intervention: Behavioral: Information prescriptions
  • Experimental: Information prescription
    Patients randomized to this arm will receive written information from Medline Plus regarding the prescription or over the counter medicine they have been prescribed at ED discharge plus information on their health condition.
    Intervention: Behavioral: Information prescriptions
  • Experimental: Informationist
    Patients in this arm will receive the same information as patients in group 2 but will also be given contact information for a clinical informationist if they have further questions about their prescription medicine or over the counter medicine prescribed at ED discharge.
    Intervention: Behavioral: Information prescriptions
  • Experimental: practical assistance
    Subjects will be offered practical assistance with obtaining prescription such as location of most convenient pharmacy and hours of operation, programs that offer drugs more cheaply, fax prescription from ED to pharmacy
    Intervention: Behavioral: Information prescriptions
Not Provided

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
Unknown status
December 2011
September 2011   (Final data collection date for primary outcome measure)

Inclusion Criteria: The study population will consist of adult patients who present to one of these three EDs during a 6 - 9 month period and are discharged with a medication regimen, either a prescription or over the counter (OTC) medication.

Exclusion Criteria: Patients will be excluded for the following reasons: (1) less than 18 years of age at time of ED visit; (2) non English or non Spanish speaking; (3) unable to understand consent or complete the baseline interview for cognitive, psychiatric or substance abuse reasons.

Sexes Eligible for Study: All
18 Years and older   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
United States
RC1LM010424-01( U.S. NIH Grant/Contract )
Not Provided
Not Provided
Melissa McCarthy, Johns Hopkins University
Johns Hopkins University
National Library of Medicine (NLM)
Principal Investigator: Melissa L McCarthy, ScD Associate Professor
Principal Investigator: Nancy Roderer, MLS Professor and Director of the Welch Medical Library
Johns Hopkins University
June 2011

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP