ClinicalTrials.gg
CompletedNCT03253783Updated Jan 23, 2018

The Evaluation of Pulse: A Mobile Health App and Teen Pregnancy Prevention Program

An interventional study of Pulse in Unprotected Sex, Contraceptive Usage and Reproductive and Sexual Health Care Utilization, sponsored by Healthy Teen Network. Completed at 1 site in United States. Open to female participants aged 18 Years to 20 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-01-23.

Primary conditionContraception BehaviorRegistry: Unsafe SexReclassifiedWhy we changed it
Registry
Unsafe Sex — the first condition term the registry derived for this study.
ClinicalTrials.gg
Contraception Behavior
Why
  1. Unsafe Sex is a broad heading, used only when no more specific condition is named.
  2. The study's listed conditions name Contraception Behavior.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Healthy Teen Network · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 9 months after the study started (first participant enrolled Nov 2016, registered Aug 2017).
Phase
Not applicable
Study type
Interventional
Enrollment
1,304
Ages
18 Years to 20 Years
Sex
Female
01

Study summary

This study uses a randomized controlled design to evaluate the efficacy of a new mobile app, Pulse, in reducing the incidence of unprotected sex among young women. Pulse is a web-based mobile health application that can be accessed through mobile smartphones and computers. Pulse was designed to increase highly effective birth control use and reproductive and sexual health care utilization, and ultimately decrease teen pregnancy. The sample is comprised of women with the following characteristics at study enrollment: aged 18-20, not pregnant or trying to become pregnant, has daily access to a smartphone, currently living in the United States or a U.S. territory, and speaks either English or Spanish. Most of the sample (at least 70%) will be women who identify as Black and/or Latina. The evaluation team plans to enroll up to 1,300 participants over a one-year enrollment period using social media, including Facebook, Instagram, and Twitter.

Users access Pulse autonomously, on their own terms, and in their own time and place. The app consists of 6 sections and includes 3 hours of unique content. It does not require the user to follow a specific sequence of content viewed; however, all users will receive a monetary incentive after registering with the apps. Youth randomized to the intervention condition are given access to Pulse indefinitely and receive daily text messages related to sexual health for 6 weeks. Control participants are directed to a free general health/fitness web-based mobile application, also called Pulse, and receive text messages related to general health for 6 weeks. The control and treatment apps look and feel similar aesthetically but contain different content. Participants in both the intervention and comparison groups receive a baseline survey and a 6-week follow-up survey. Participants will also receive incentives once they complete the baseline and post-intervention survey. Both surveys are conducted online via an electronic survey platform. This study is being conducted as a Rigorous Evaluation of New or Innovative Approaches to Prevent Teen Pregnancy funded by the U.S. Department of Health and Human Services' Office of Adolescent Health.

02

Conditions studied

  • Unprotected Sex
  • Contraceptive Usage
  • Reproductive and Sexual Health Care Utilization

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03

In context

Contraception Behavior Reclassified

132 studies on the registry are indexed under Contraception Behavior; 20 are open to participants now.

This study's enrollment of 1,304 is above the median of 382 across 106 interventional studies indexed under Contraception Behavior.

Browse Contraception Behavior studies →

Lead sponsor

This is the only study on the registry with Healthy Teen Network as lead sponsor.

Compared within Contraception Behavior, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Unsafe Sex. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
18 Years to 20 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Gender: Female
  • Age Limit: 18-20
  • Must have daily access to a smartphone that receives text messages and can access to the Internet
  • Must speak English or Spanish
  • Must live in the United States or a U.S. territory

Exclusion criteria

Exclusion Criteria:

  • Currently pregnant or trying to get pregnant
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Masking
None (open label)
Enrollment
1,304 participants (actual)

Interventions

  • BehavioralPulse
06

What researchers measure

Primary outcomes

  1. Unprotected sex, no contraceptive

    Ever having sexual intercourse without using any method of contraception (among full sample)

    Time frame: 6-week post-baseline (in the past 6 weeks)

  2. Unprotected sex, no highly effective contraceptive

    Ever having sexual intercourse without using a hormonal or LARC method of contraception (among full sample)

    Time frame: 6-week post-baseline (in the past 6 weeks)

Secondary outcomes

  1. Reproductive and sexual health care utilization (among full sample)

    Visiting a health care provider for reproductive or sexual health services within the past 6 weeks for the 1st follow-up survey

    Time frame: 6-weeks post-baseline

07

Study locations

1 site
  • Healthy Teen Network
    Baltimore, Maryland 21202, United States
08

References and documents

Publications

  • Palmer MJ, Henschke N, Villanueva G, Maayan N, Bergman H, Glenton C, Lewin S, Fonhus MS, Tamrat T, Mehl GL, Free C. Targeted client communication via mobile devices for improving sexual and reproductive health. Cochrane Database Syst Rev. 2020 Jul 14;8(8):CD013680. doi: 10.1002/14651858.CD013680. PubMed 32779730 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03253783
Lead sponsor
Healthy Teen Network
Collaborators
Child Trends, Ewald and Wasserman, Meta Media
Responsible party
Martinez Garcia (Dr. Genevieve Martínez-García, Healthy Teen Network) — Principal investigator
First posted
Aug 18, 2017
Start date
Nov 2016
Primary completion
Dec 2017
Completion
Jan 2018
Last update
Jan 23, 2018

Study contacts

Genevieve Martinez-Garcia, PhD
principal investigator · Healthy Teen Network
Jennifer Manlove, PhD
principal investigator · Child Trends

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2018. You cannot join it, but the record below documents what was studied.

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