ClinicalTrials.gg
CompletedNCT07800728GirlsUpdated Sep 2, 2026

Girls on Sexual Communication

An interventional study of Girls in Sexual Health, Mobile Application and Female Adolescents, sponsored by Kaohsiung Medical University Chung-Ho Memorial Hospital. Completed at 1 site in Taiwan. Open to female participants aged 15 Years to 24 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-02.

Sponsored by Kaohsiung Medical University Chung-Ho Memorial Hospital · Not applicable, Interventional, and Health services research

From the registry’s dates

  • Registered 5 years 8 months after the study started (first participant enrolled Nov 2020, registered Aug 2026).
Phase
Not applicable
Study type
Interventional
Enrollment
245
Allocation
Non-randomized
Ages
15 Years to 24 Years
Sex
Female
01

Study summary

Adolescents' sexual health has been an important issue for health care professionals, education and society. The purpose of this study was to examine the impact of a mobile application on adolescent girls' sexual communication self-efficacy and sexual health outcomes. A total of 245 adolescent girls were recruited through purposive sampling between November 2020 and July 2021, with 133 in the experimental group and 112 in the control group. Data were collected at three time points: baseline (T0), immediately after the 6-week intervention (T1), and 4 weeks post-intervention (T2).

Read the detailed description

Adolescents' sexual health has been an important issue for healthcare professionals, educators, and society. Conversations about sexual health are often sensitive and uncomfortable for young people. This is especially true for adolescent girls, who often struggle to assert their sexual desires or preferences in relationships. Empowering young women with communication and negotiation skills during sexual encounters is therefore crucial. To address this, we developed a sexual communication program based on the ADDIE instructional design model. The purpose of this study was to examine the impact of a mobile application on adolescent girls' sexual communication self-efficacy and sexual health outcomes. A total of 245 emerging adult women were recruited through purposive sampling between November 2020 and July 2021, with 133 in the experimental group and 112 in the control group. The experimental group received the sexual communication program, while the control group received routine care. Data were collected at three time points: baseline (T0), immediately after the 6-week intervention (T1), and 4 weeks post-intervention (T2).

02

Conditions studied

  • Sexual Health
  • Mobile Application
  • Female Adolescents
  • Dyadic Sexual Communication
  • Intervention Effectiveness

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Keywords

  • sexual communication self-efficacy
  • safer sexual behavior
  • adolescent girl
03

In context

Communication

719 studies on the registry are indexed under Communication; 159 are open to participants now.

This study's enrollment of 245 is above the median of 144 across 571 interventional studies indexed under Communication.

Browse Communication studies →

Lead sponsor

Kaohsiung Medical University Chung-Ho Memorial Hospital is the lead sponsor of 291 studies on the registry; 58 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
15 Years to 24 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

  • Adolescent girls who use smartphones and mobile internet and have a habit of using LINE
  • Adolescent girls aged 15-24 [based on the United Nations definition of youth.

Exclusion criteria

Exclusion Criteria

∙ individuals who are homosexual or have an uncertain sexual orientation.

05

Study design

Phase
Not applicable
Primary purpose
Health services research
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
245 participants (actual)

Study arms

  • Experimental
    experimental group

    mobile application

    Behavioral: Girls

  • No intervention
    control group

    routine care

Interventions

  • BehavioralGirls

    mobile application

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What researchers measure

Primary outcomes

  1. sexual communication self-efficacy

    The "Sexual Communication Self-Efficacy Scale" developed by Quinn-Nilas et al. (2016), including five factors: contraception communication, positive sexual messages, negative sexual messages, sexual history, and condom negotiation. The scale has 22 items, with scores ranging from 1 to 4. The higher the score, the more confident the respondent in communicating sexual issues with their partner.

    Time frame: baseline (T0), immediately after the 6-week intervention (T1), and 4 weeks post-intervention (T2)

07

Study locations

1 site
  • Kaohsiung Medical University Chung-Ho Memorial Hospital
    Kaohsiung, Taiwan 807378, Taiwan
08

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2020 to primary completion in May 2021, 6 months.

Of 390 non-industry interventional studies with no phase under Communication, half reached primary completion within 18 months of starting (the median), counting those still running; a quarter within 6 and three quarters within 36. This study's 6 months is below that.

Counting every sponsor, half of 394 studies reached it within 18 months; a quarter within 6 and three quarters within 36.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 3, 2026
First posted
Sep 2, 2026
StartActual
Nov 16, 2020
Primary completionActual
May 24, 2021
CompletionActual
May 24, 2021
Last update
Sep 2, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 2, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07800728
Responsible party
Sponsor
First posted
Sep 2, 2026
Start date
Nov 16, 2020
Primary completion
May 24, 2021
Completion
May 24, 2021
Last update
Sep 2, 2026

Oversight

Data monitoring committee
Yes
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 Jul 2026. You cannot join it, but the record below documents what was studied.

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