Increasing Effectiveness of Family Planning Promoters in Mozambique through an SMS Intervention

Last registered on November 17, 2020


Trial Information

General Information

Increasing Effectiveness of Family Planning Promoters in Mozambique through an SMS Intervention
Initial registration date
February 18, 2020

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
February 19, 2020, 3:17 PM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
November 17, 2020, 7:13 PM EST

Last updated is the most recent time when changes to the trial's registration were published.


Primary Investigator


Other Primary Investigator(s)

PI Affiliation
PI Affiliation
American University
PI Affiliation
University of Exeter

Additional Trial Information

On going
Start date
End date
Secondary IDs
The objective of this evaluation is to use a randomized design to evaluate the effect of sending a series of mobile SMS follow-ups to beneficiaries who have received referrals for family planning services from a family planning promoter in urban and peri-urban Mozambique (Nampula and Sofala provinces). Currently, only about 50% of beneficiaries who receive referrals ever redeem them by visiting a family planning clinic. This evaluation seeks to understand whether behaviorally informed SMS messages can be a cost-effective means of increasing the referral redemption rate among beneficiaries. The project is implemented by the Office of Evaluation Sciences, supporting the USAID-funded Integrated Family Planning Program (IFPP) in Mozambique led by Pathfinder International; the component of the IFPP that will be evaluated in this project is led by Population Services International (PSI).
External Link(s)

Registration Citation

Hensly, Catherine et al. 2020. "Increasing Effectiveness of Family Planning Promoters in Mozambique through an SMS Intervention." AEA RCT Registry. November 17.
Experimental Details


The proposed intervention is a series of mobile message follow-ups for beneficiaries who have received referrals to encourage them to redeem their referral. The reminders will include basic information about when the referral was received, a reminder to redeem it, and encouragement to contact the promoter. Six substantive messages will be sent within the first month following the promoter's visit, on the following schedule: one day post-visit (or as soon as the respondent's consent can be verified), three days post-visit, and at one week, two weeks, three weeks, and four weeks. These messages will be supplemented by an additional introductory message and a thank-you message at the end of the month.

Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
Redemption of voucher for family planning services
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Beneficiaries will be randomized at the individual level into the following conditions.

Control (status quo) — Promoters will follow up as normal, according to the schedule laid out above based on each woman’s segment type.

Treatment — Beneficiaries will receive a series of electronic follow-ups reminding them to redeem their referrals or follow up with their promoter, as described above.

Enrollment will be conducted on an ongoing basis as promoters visit new beneficiaries; eligible beneficiaries who provide consent will be enrolled into the sample, and randomization will be conducted at least twice weekly.
Experimental Design Details
Randomization Method
Randomization will be conducted at least bi-weekly in Stata.
Randomization Unit
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
The projected sample size is between 3700 and 5100; the numbers will vary based on the promoters' ability to rapidly verify consent for beneficiaries in the field. These projections reflect estimates constructed post-piloting.
Sample size: planned number of observations
As above
Sample size (or number of clusters) by treatment arms
The sample size per treatment arm is between 1850 and 2550.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
The minimum detectable effect ranges between 3.9 and 4.6 percentage points, relative to a base redemption rate of vouchers of 50%.

Institutional Review Boards (IRBs)

IRB Name
Republica de Mozambique Comite National de Bioetica para a Saude
IRB Approval Date
IRB Approval Number
Analysis Plan

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Post Trial Information

Study Withdrawal

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Is the intervention completed?
Data Collection Complete
Data Publication

Data Publication

Is public data available?

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials