Non-integrated Costs Increase Effectiveness of Incentives

Carnegie Mellon University logo

Carnegie Mellon University

Status

Completed

Conditions

Direct Incentive
Control - No Incentive for Flu Vaccine
Indirect Incentive

Treatments

Behavioral: Incentive for completing a short survey
Behavioral: Incentive for Vaccination
Behavioral: Email Message

Study type

Interventional

Funder types

Other

Identifiers

NCT03507231
P30AG0345462017

Details and patient eligibility

About

The investigators will test the hypothesis that the control (no incentive) condition will have the lowest vaccination rate, the main task condition will have a significantly higher vaccination rate while the indirect condition will have the highest vaccination rate. Participants will be randomly assigned to one of the three message conditions and their vaccination records obtained from the university Occupational Health Department.

Full description

The investigators will send e-mails to a complete mailing list of faculty and staff at a university. Each recipient will be randomly assigned to one of three conditions: control, main task incentive or indirect incentive. Our main dependent variable will be whether or not participants decide to get vaccinated. The investigators will obtain their actual vaccination records from the university Occupational Health Department. Within the e-mail message, participants will indicate whether or not they intend to get vaccinated. Intention serves as an indirect dependent outcome. Upon clicking to indicate their intention, participants are redirected to a page which gives further instructions on how to proceed. Participants who vaccinate will be asked to complete a brief follow-up questionnaire to evaluate their experience with vaccination and (for those offered and incentive) to provide contact information to receive their payment.

Enrollment

12,531 patients

Sex

All

Ages

18 to 100 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

  • Must be faculty or staff at Rutgers University.

Exclusion criteria

Trial design

Primary purpose

Prevention

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

12,531 participants in 3 patient groups

Control
Active Comparator group
Description:
Participants will receive an E-mail Message encouraging them to get vaccinated, and asking them to indicate if they intend to do so and to complete a brief questionnaire after vaccination.
Treatment:
Behavioral: Email Message
Direct Incentive
Experimental group
Description:
Participants will receive an E-mail Message encouraging them to get vaccinated, and asking them to indicate if they intend to do so and to complete a brief questionnaire after vaccination. They are offered an Incentive for Vaccination ($5 Amazon Gift Card).
Treatment:
Behavioral: Email Message
Behavioral: Incentive for Vaccination
Indirect Incentive
Experimental group
Description:
Participants will receive an E-mail Message encouraging them to get vaccinated, and asking them to indicate if they intend to do so and to complete a brief questionnaire after vaccination. They are offered an Incentive for completing a short survey ($5 Amazon Gift Card).
Treatment:
Behavioral: Email Message
Behavioral: Incentive for completing a short survey

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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