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Teen CHAT: Improving Physician Communication With Adolescents About Healthy Weight (TeenCHAT)

This study has been completed.
National Heart, Lung, and Blood Institute (NHLBI)
Information provided by (Responsible Party):
Duke University Identifier:
First received: December 29, 2009
Last updated: September 22, 2016
Last verified: September 2016

The purpose of this study is to teach primary care physicians effective ways to counsel overweight and obese adolescent patients to attain a healthy weight. Fifty physicians and up to 660 adolescent patients from Duke University Health System (DUHS) Primary Care Clinics will take part in this study.

Patients will be identified by research study staff and asked if they would be willing to have their clinic visit audio recorded for research purposes. There are three phases of data collection. First, baseline encounters (n=200, 4 per physician) are audio recorded. Then, half of the physicians will be randomized to receive a tailored web-based intervention containing information about evidence-based techniques to help adolescents attain a healthy weight. A new set of 200 encounters (4 per physician) will be audio recorded. Then, all physicians will receive a Summary Report that outlines the adolescent's high risk behaviors that contribute to weight (sweetened beverages, fast food, breakfast, physical activity, screen time, and sleep) and a new set of 200 encounters will be audio recorded.

Data will be collected by trained data technicians, in-person and over the phone. Data is collected on laptop computers and then downloaded into password protected electronic files on a secure network server. All participants (adolescent patients and physicians) will be assigned a code number that is the sole identifier on all study data forms. Prior to and after coding, digital files will be stored in password protected directories to which only the data technicians and project manager have access. The web-based intervention will be password protected.

Condition Intervention
Communication Obesity Nutrition Physical Activity Sleep Behavioral: Web-based intervention targeting MD communication; Summary Report

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Primary Purpose: Health Services Research
Official Title: Teen CHAT: Improving Physician Communication With Adolescents About Healthy Weight

Further study details as provided by Duke University:

Primary Outcome Measures:
  • Physician communication [ Time Frame: after CD-ROM phase ]

Secondary Outcome Measures:
  • Summary Report [ Time Frame: After Summary Report Phase ]
    Assess whether summary report increases whether physicians address six health risk behaviors

  • Adolescent Nutrition, Physical Activity, and BMI Z-score [ Time Frame: 3 months post-visit ]
    Examine whether patients whose MD was in the MI education arm improved their nutrition, physical activity, and BMI z-score 3 months post-visit more than patients whose MD was in the control arm.

Enrollment: 684
Study Start Date: September 2009
Study Completion Date: February 2014
Primary Completion Date: December 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Motivational Interviewing intervention
Web-based intervention targeting MD communication and Summary Report
Behavioral: Web-based intervention targeting MD communication; Summary Report
Web-based intervention targeting MD communication; Summary Report detailing 6 risk factors for adolescent overweight/obesity developed by study team
Other Names:
  • Tailored Web-based intervention developed by study team
  • Tailored Summary Report
No Intervention: Control
MD receives Summary Report only


Ages Eligible for Study:   12 Years to 18 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria for MDs:

  • Specialty is Family Practice or Pediatrics
  • Located in participating clinic
  • Not planning to leave clinic in the next two years

Inclusion Criteria for teen patients:

  • English-speaking
  • BMI z-score >85th percentile
  • age 12-18
  • not pregnant
  • have parental consent to participate if over 18
  • have visit at least 7 days in the future
  • have access to a telephone

Exclusion Criteria for teen patients:

  • BMI z-score <85th percentile
  • not English speaking
  • pregnant
  • <12 or older than 18
  • incompetent for interview
  • seen primarily by non-physician provider
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01040975

United States, North Carolina
Duke University Medical Center - Cancer Prevention, Detection and Control
Durham, North Carolina, United States, 27710
Sponsors and Collaborators
Duke University
National Heart, Lung, and Blood Institute (NHLBI)
Principal Investigator: Kathryn I Pollak, PhD Duke University