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Vaccine Health Literacy Related Text Message Reminders to Increase Receipt of Second Dose of Influenza Vaccine for Young, Low Income, Urban Children

This study has been completed.
Information provided by (Responsible Party):
Melissa Stockwell, MD, MPH, Columbia University Identifier:
First received: August 8, 2012
Last updated: July 19, 2015
Last verified: July 2015
Influenza remains a potentially significant and largely preventable source of morbidity and mortality, yet vaccine coverage is low. Young children are at particular risk for underimmunization because they may need to receive 2 doses in a current season. Even among those young children that initiate vaccination, only 40% receive the important second dose, yet one dose does not confer adequate protection. Low-income, urban children may be at particular risk of not receiving two doses. While traditional mail and phone immunization reminders notifying families that a vaccine is due have had limited efficacy in low-income, urban populations, we have demonstrated the success of using text messages. Comparing the effectiveness of different forms of reminders on receipt of this critical second dose of influenza vaccine has not been studied. Besides failure to remember to return for subsequent doses, receipt of 2 doses of influenza vaccine in a season can be affected by limited health literacy regarding influenza vaccination, particularly associated with understanding the need for a second dose since not all children require it. Text messaging offers the ability to combine health literacy promoting information and reminders in a scalable, efficient manner for populations at high risk for underimmunization, limited health literacy, and influenza spread. Therefore, the purpose of this study is to determine whether the provision of interactive vaccine health literacy-promoting information in text message vaccine reminders improves receipt and timeliness of the second dose of influenza vaccine within a season for underserved children in need of two doses.

Condition Intervention
Other: Text Message
Other: Written reminder

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single Blind (Outcomes Assessor)
Primary Purpose: Health Services Research
Official Title: Pragmatic Clinical Trial of Vaccine Health Literacy Related Text Message Reminders to Increase Receipt of Second Dose of Influenza Vaccine for Young, Low Income, Urban Children

Resource links provided by NLM:

Further study details as provided by Melissa Stockwell, MD, MPH, Columbia University:

Primary Outcome Measures:
  • Receipt of 2nd Dose of the Influenza Vaccine. [ Time Frame: by April 30th after receipt of first dose (up to 8 months) ]

Secondary Outcome Measures:
  • Number of Subjects Who Receive the 2nd Dose of the Influenza Vaccine on Time. [ Time Frame: by 42 days after dose of first vaccination ]

Enrollment: 660
Study Start Date: September 2012
Study Completion Date: June 2013
Primary Completion Date: March 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Educational Text Message
Educational text message reminder
Other: Text Message Other: Written reminder
Experimental: Plain Text Message
plain text message reminder
Other: Text Message Other: Written reminder
Written reminder only
written reminder at time of vaccination
Other: Written reminder


Ages Eligible for Study:   6 Months to 9 Years   (Child)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Parenting adult of child age 6 months through 8 years
  • Child receives care at study site (visit in last 12 mths)
  • child received influenza vaccine and needs a second this season
  • Parent has cell phone has text message capability
  • Parent speak English or Spanish
  • Can read text messages

Exclusion Criteria:

  • Parent does not speak English or Spanish
  • Parent does not have cell phone with text messages
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Please refer to this study by its identifier: NCT01662583

United States, New York
Columbia University
New York, New York, United States, 10032
Sponsors and Collaborators
Columbia University
Principal Investigator: Melissa Stockwell, MD MPH Columbia University
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Melissa Stockwell, MD, MPH, Assistant Professor of Pediatrics and Population and Family Health, Columbia University Identifier: NCT01662583     History of Changes
Other Study ID Numbers: AAAJ9354
Study First Received: August 8, 2012
Results First Received: May 17, 2015
Last Updated: July 19, 2015

Keywords provided by Melissa Stockwell, MD, MPH, Columbia University:
text message

Additional relevant MeSH terms:
Influenza, Human
Orthomyxoviridae Infections
RNA Virus Infections
Virus Diseases
Respiratory Tract Infections
Respiratory Tract Diseases
Immunologic Factors
Physiological Effects of Drugs processed this record on May 25, 2017