Measles Vaccination Cash Incentives Experimental Evidence From Nigeria

IDinsight is conducting a randomized controlled trial to assess the impact of various sized cash incentives for caretakers of infants that require a 9-month measles vaccination on the completion rate for the vaccine in Nigeria. The purpose of the experiment is to help New Incentives (NI) determine the optimal size of the incentive as they scale to the North West region of Nigeria.

Study Overview

• Status: Completed
• Conditions: Measles
• Intervention / Treatment: Behavioral: Call; Behavioral: Cash Incentive

• Study Type: Interventional
• Enrollment (Actual): 1088
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Nigeria
  • Federal Capital Territory
    • Abuja, Federal Capital Territory, Nigeria
      • All Babies are Equal Initiative (New Incentives)

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 9 months and older (Child, Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Caregiver and infant registered with the New Incentives program
• The infant was nine months or older at the start of the study (note there was no upper age limit as New Incentives only began enrolling infants in October 2016)
• Infant had received at least one previous conditional cash transfer for immunization at an All Babies are Equal Initiative clinic,
• Infant had received their Penta-3 vaccine.
• The caregiver had provided a phone number (either a personal number or a number of someone who can reach them) during registration.

Exclusion Criteria:

• Infant had already received a measles vaccine

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

4

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
No Intervention: Pure Control; Respondents received New Incentives' normal program.
Placebo Comparator: Reminder Call; Respondents received a call from a New Incentives' staff member similar to the treatment arms, but weren't offered additional incentives.	Behavioral: Call; A New Incentives' team member reminded caregivers of their child's measles immunization date and the total amount of incentive they would receive once their child was vaccinated. If the caregiver could not be reached on the first attempt, the team made additional attempts at different times of the day on five different days across two weeks (up to 10 attempts were made per caregiver).
Experimental: Small Additional Incentive; Respondents were told they would receive 1000 NGN more than originally promised by New Incentives' (either 2000 or 3000 NGN) when they brought their child for measles immunization.	Behavioral: Call; A New Incentives' team member reminded caregivers of their child's measles immunization date and the total amount of incentive they would receive once their child was vaccinated. If the caregiver could not be reached on the first attempt, the team made additional attempts at different times of the day on five different days across two weeks (up to 10 attempts were made per caregiver).; Behavioral: Cash Incentive; During the phone call, New Incentives' team member promised a greater cash payment from New Incentives' staff members at primary health care facilities when infants enrolled in the program and received their measles vaccination.
Experimental: Large Additional Incentive; Respondents were told they would receive 3000 NGN more than originally promised by New Incentives' (either 2000 or 3000 NGN) when they brought their child for measles immunization.	Behavioral: Call; A New Incentives' team member reminded caregivers of their child's measles immunization date and the total amount of incentive they would receive once their child was vaccinated. If the caregiver could not be reached on the first attempt, the team made additional attempts at different times of the day on five different days across two weeks (up to 10 attempts were made per caregiver).; Behavioral: Cash Incentive; During the phone call, New Incentives' team member promised a greater cash payment from New Incentives' staff members at primary health care facilities when infants enrolled in the program and received their measles vaccination.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Measles Vaccination Coverage Rate	The outcome of interest is the measles coverage rate among the eligible randomized infants. Coverage is measured using the measles vaccination information recorded on the child's health card. The child health card information was immediately entered into the New Incentives' database by their field staff when they disbursed the cash incentives at program clinics. Information from the New Incentives' database was used for the analysis.	We assessed whether eligible infants received measles vaccination at any time during the 4 month study period. Children were a minimum of 9 months at the beginning of the study and a maximum of 7 years at the end of the study.

Collaborators and Investigators

• Sponsor: IDinsight
• Collaborators: GiveWell
• Investigators: Principal Investigator: Alison Connor, IDinsight

Study record dates

Study Major Dates

• Study Start (Actual): May 12, 2017
• Primary Completion (Actual): September 11, 2017
• Study Completion (Actual): September 11, 2017

Study Registration Dates

• First Submitted: June 27, 2019
• First Submitted That Met QC Criteria: July 6, 2019
• First Posted (Actual): July 9, 2019

Study Record Updates

• Last Update Posted (Actual): July 9, 2019
• Last Update Submitted That Met QC Criteria: July 6, 2019
• Last Verified: July 1, 2019

More Information

Terms related to this study

• Keywords: Immunization; Incentives
• Additional Relevant MeSH Terms: RNA Virus Infections; Virus Diseases; Infections; Morbillivirus Infections; Paramyxoviridae Infections; Mononegavirales Infections; Measles
• Other Study ID Numbers: 004

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: YES
• IPD Plan Description: Include anonymized data and study protocol as supplementary materials for the published article.
• IPD Sharing Time Frame: At the time of publication.
• IPD Sharing Supporting Information Type: STUDY_PROTOCOL

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No