NCT01207232

Brief Summary

The investigators conducted a 3-arm randomized controlled trial to test whether a low-cost planning intervention could increase influence vaccination rates.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
3,272

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Oct 2009

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 2009

Completed
1 month until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2009

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

April 1, 2010

Completed
6 months until next milestone

First Submitted

Initial submission to the registry

September 20, 2010

Completed
2 days until next milestone

First Posted

Study publicly available on registry

September 22, 2010

Completed
Last Updated

September 22, 2010

Status Verified

September 1, 2010

Enrollment Period

1 month

First QC Date

September 20, 2010

Last Update Submit

September 21, 2010

Conditions

Seasonal Influenza

Keywords

seasonal influenzabehavioral economicsimplementation intentionsplanning promptnudge

Outcome Measures

Primary Outcomes (1)

  • Receipt of 2009 Seasonal Influenza Vaccination

    up to 30 weeks

Study Arms (3)

Time Plan Condition

EXPERIMENTAL

A basic reminder mailing prompted each subject to write down a planned date and time for getting their flu shot.

Behavioral: Planning Prompt

Date Plan Condition

EXPERIMENTAL

A basic reminder mailing prompted each subject to write down a planned date for getting their flu shot.

Behavioral: Planning Prompt

Control Condition

ACTIVE COMPARATOR

A basic reminder mailing prompted each subject to receive a flu shot.

Behavioral: Control Condition

Interventions

Planning PromptBEHAVIORAL

A prompt to write down a planned date (or date and time) for getting a flu shot

Date Plan ConditionTime Plan Condition
Control ConditionBEHAVIORAL

A basic reminder mailing prompted each subject to get their flu shot.

Control Condition

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Vaccine indications according to fall 2009 CDC criteria (age \>= 50 or chronic disease
  • Employee at partner corporation that implemented the study

You may not qualify if:

  • None

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

University of Pennsylvania

Philadelphia, Pennsylvania, 19104, United States

Location

Study Officials

  • Katherine L Milkman, Ph.D.

    University of Pennsylvania

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
HEALTH SERVICES RESEARCH
Intervention Model
PARALLEL
Sponsor Type
OTHER

Study Record Dates

First Submitted

September 20, 2010

First Posted

September 22, 2010

Study Start

October 1, 2009

Primary Completion

November 1, 2009

Study Completion

April 1, 2010

Last Updated

September 22, 2010

Record last verified: 2010-09

Locations

US(1)