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Middle School Cluster Randomized Controlled Trial (RCT) to Evaluate E-Cigarette Prevention Program: CATCH My Breath

Middle School Cluster RCT to Evaluate E-Cigarette Prevention Program: CATCH My Breath

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04843501
Enrollment
2059
Registered
2021-04-13
Start date
2020-12-13
Completion date
2024-12-30
Last updated
2026-02-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

E-cigarette Use

Keywords

E-cigarette Prevention

Brief summary

This is a two-arm, cluster randomized trial designed to to evaluate the effectiveness of an e-cigarette curriculum \[called the CATCH My Breath (CMB) program\] in delaying the onset of e-cigarette use in middle schoolers. Schools will be assigned to either the CMB program or usual care, which is Texas Education Agency (TEA) required tobacco prevention program. 10 schools will be assigned to each arm arm, and each school will include 70 students in the study, for a total of 700 students per arm and 1400 total students in the study. Both programs will be administered to participating students over 3 years.

Detailed description

The goal of this research is to empirically assess the three year immediate effects and 12 year follow-up of the CATCH My Breath (CMB) program on delaying the onset of e-cigarette use with a 6th-9th grade cohort, using a 20-school group randomized controlled trial (RCT), with 1,400 students. E-cigarettes are the most commonly used tobacco product by US youth. Recent research, strongly suggests that youth who only smoke e-cigarettes exhibit symptoms of addiction, and are more likely to experiment combustible tobacco. Unfortunately, few e-cigarette prevention programs exist, and none have been tested for longer-term efficacy. Although some tobacco prevention programs have included an e-cigarette add -on component, to our knowledge, none of these revised programs have been formally evaluated. The lack of e-cigarette specific program content, and lack of rigorous evaluation, warrants the proposed project. CMB was developed with input from school administrators, health education coordinators, tobacco prevention educators, classroom teachers, students, and parents. CMB has been formatively evaluated and pilot tested at 59 middle schools in 7 states, resulting in positive feedback from over 100 middle school teachers and 9,578 6th-8th grade students. Our second pilot pretest-posttest controlled experiment (2017-2018), and resulted in an treatment-control difference of 3.8% in ever smoking over a 16-month period. Given CMB's current popularity with schools as a 'best practice' program, and with initial positive results, a full scale randomized control trial is needed to determine longer term, 6th-9th grade efficacy.

Interventions

BEHAVIORALCATCH My Breath (CMB) program for E-cigarette prevention among adolescents

CMB has 4 developmentally appropriate e-cigarette lessons, 20-30 minutes in each of 6th-8th grades. Strategies include small and large group discussions, parent interviews, role-plays, media literacy, and goal setting. E-cigarette focused science and humanities activities (2 per school year) are also provided. An informational tool kit will be provided to parents. Finally, 8 activity-based E-cig PE lessons are intended for either 7th or 8th grades, depending on school calendar. CMB provides study materials to teachers through an online access portal. A site-based management team will oversee program implementation. Teachers in CMB intervention schools will be provided with CMB-specific training for implementing the lessons with fidelity through a one-hour live webinar, offered at multiple times to accommodate teaching schedules. Project staff will meet routinely with participating schools to answer study questions.

BEHAVIORALTexas Education Agency (TEA) required tobacco prevention program

The TEA tobacco prevention program is a state-supported program that meets the mandates of the state. It includes TEA developed online lessons and support materials and also includes elements of the CDC Know the Risks e-cigarette prevention program. This can be considered 'usual care'

Sponsors

The University of Texas Health Science Center, Houston
Lead SponsorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE

Intervention model description

10 schools will receive the experimental CATCH My Breath program and 10 schools will receive the usual care Texas Education Agency required tobacco prevention program. Each school will include 70 students.

Eligibility

Sex/Gender
ALL
Age
10 Years to 15 Years
Healthy volunteers
Yes

Inclusion criteria

School Inclusion Criteria: * enrollment of at least 70 students in each of the 6th, 7th, and 8th grades * school location is 100 miles of research site School

Exclusion criteria

* schools that have participated in the previous 2 pilot tests * currently implementing CMB Student Inclusion Criteria: * enrollment in the 6th grade at a study school * willingness to complete the measurements six times during the study Student

Design outcomes

Primary

MeasureTime frameDescription
Number of Students Who Currently Use E-cigarettesbaselineCurrent use is defined as e-cigarette use in the last 30 days.
Number of Students Who Have Ever Used E-cigarettes in Their Lifetimebaseline
Number of Students Who Are Susceptible to E-cigarette UsebaselineSusceptibility to e-cigarette use is defined as never used an e-cigarette but having tendencies that indicate that e-cigarette use is likely. Susceptibility is assessed with a questionnaire that asks "Do any of your friends use e-cigarettes?," "Are you curious about e-cigarettes?," and "Do you think you will try an e-cigarette in the next year?" Yes to any of these three questions indicates susceptibility to e-cigarette use.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORSteven H Kelder, PhD, MPH

The University of Texas Health Science Center, Houston

Participant flow

Pre-assignment details

Of the 2059 participants enrolled in the study, 5 participants withdrew before starting the study. Eligible individuals could enroll at the start of any semester. Participation was not required to be continuous, and participant numbers varied by semester.

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
2059 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
784 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
328 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
28 Participants
Race (NIH/OMB)
American Indian or Alaska Native
22 Participants
Race (NIH/OMB)
Asian
83 Participants
Race (NIH/OMB)
Black or African American
233 Participants
Race (NIH/OMB)
More than one race
175 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
4 Participants
Race (NIH/OMB)
Unknown or Not Reported
223 Participants
Race (NIH/OMB)
White
693 Participants
Region of Enrollment
United States
1332 participants
Sex/Gender, Customized
Female
995 Participants
Sex/Gender, Customized
Male
672 Participants
Sex/Gender, Customized
Unknown or Not Reported
17 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 1,3320 / 727
other
Total, other adverse events
0 / 1,3320 / 727
serious
Total, serious adverse events
0 / 1,3320 / 727

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 7, 2026