The P4 Intervention Study to Improve Adolescent Health
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ClinicalTrials.gov Identifier: NCT02554682 |
Recruitment Status :
Completed
First Posted : September 18, 2015
Results First Posted : March 25, 2019
Last Update Posted : April 10, 2019
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Condition or disease | Intervention/treatment | Phase |
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Adolescent Behavior | Behavioral: Sexual Health Behavioral: Alcohol Prevention Behavioral: Teen Driving | Not Applicable |
Primary care provides a means by which to connect evidence-based interventions with patients; however, many interventions have been evaluated using randomized controlled trials (RCTs) in non-healthcare settings.
The primary objective is to conduct a pilot study to determine the effect of evidence-based interventions delivered in primary care clinic settings on parent-teen communication about alcohol use, sexual health, and safe driving.
Eligible participants are healthy adolescent patients from the Children's Hospital of Philadelphia (CHOP) primary care network with a well-child visit scheduled between the ages of 14 to 17 years with one parent willing to participate. Adolescents that hold an intermediate driver's license, that are pregnant, or that have pervasive development disorder or a developmental delay are excluded from this study.
Parents will be given written psychoeducational intervention materials on communicating with their adolescents about alcohol use, sexual health, or safe driving (e.g.,booklets, tip sheet brochures, activity workbooks, web links), receive coaching about using the intervention materials, and provider endorsement of the materials during the well-child visit, as well as follow-up phone health coaching 2 weeks after the appointment.
The primary endpoints are evaluating the difference between the intervention and control groups on parent-teen communication on the targeted health topics.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 348 participants |
Allocation: | Randomized |
Intervention Model: | Factorial Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Prevention |
Official Title: | A Pilot Efficacy and Implementation Study of the Patients, Parents and Professionals Partnering to Improve Adolescent Health (P4) Intervention |
Study Start Date : | January 2016 |
Actual Primary Completion Date : | April 10, 2017 |
Actual Study Completion Date : | April 10, 2017 |

Arm | Intervention/treatment |
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Sexual Health
Parents of teens between the ages of 14 and 15 will review psychoeducational workbooks related to sexual health at a well-child visit appointment with the primary care giver (baseline); 2 weeks after baseline they will received a follow-up phone call and health coaching session to review the materials and ask questions; and then at 4 to 5 months post baseline we will collect data to assess the efficacy of the study materials.
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Behavioral: Sexual Health
Psychoeducational workbook, worksheets, tip sheets, and health coaching session about sexual health, sexually transmitted disease (STD) prevention, and safe sex practices for teenager. |
Alcohol Prevention
Parents of teens between the ages of 14 and 15 will review psychoeducational workbooks related to alcohol prevention at a well-child visit appointment with the primary care giver (baseline); 2 weeks after baseline they will received a follow-up phone call and health coaching session to review the materials and ask questions; and then at 4 to 5 months post baseline we will collect data to assess the efficacy of the study materials.
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Behavioral: Alcohol Prevention
Psychoeducational workbook, worksheets, tip sheets, and health coaching session about alcohol prevention and safety, underage drinking, and drinking and driving. |
No Intervention: Sexual Health & Alcohol Control Group
Parents of teens between the ages of 14 and 15 will receive their usual care at their well-child visit appointment with their primary care giver (baseline) and then at 4 to 5 months post baseline we will collect data. At the end of the post data collection, the control group will get all of the study materials from both the sexual health and alcohol prevention groups.
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Teen Driving
Parents of teens between the ages of 16 and 17 who are planning on having the medical certification for the permit application completed and plan on taking their driving permit test in the next 8 weeks will review psychoeducational workbooks related to teen driving at a well-child visit appointment with the primary care giver (baseline); 2 weeks after baseline they will received a follow-up phone call and health coaching session to review the materials and ask questions; and then at 6 months post baseline we will collect data to assess the effectiveness of the study materials.
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Behavioral: Teen Driving
Psychoeducational workbook, worksheets, videos, tip sheets, and health coaching session about how parents can help supervise their teens' safe driving practices and how to talk with their teen about important safety topics for teen drivers. |
No Intervention: Teen Driving Control
Parents of teens between the ages of 16 and 17 who are planning on having the medical certification for the permit application completed and plan on taking their driving permit test in the next 8 weeks will receive their usual care at their well-child visit appointment with their primary care giver (baseline) and then at 6 months post baseline we will collect data. At the end of the post data collection, the control group will get all of the study materials from the teen driving group.
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- Quality of Parent-teen Communication (General- All Groups) [ Time Frame: 4-6 months post-enrollment ]Parents completed the 20-item Parent-Adolescent Communication Scale (PACS) (Barnes & Olson, 1985) which is scored such that a higher total score (sum of all items across scales) indicated better parent-adolescent communication. Teens answered the same questions, with only minor changes in wording when necessary. Scores were summed into an index that ranged from 41-96, α parent = 0.84, and 43-96, α teen = 0.87.
- Frequency of Communication About Alcohol [ Time Frame: 4-6 months post-enrollment ]Frequency of communication about alcohol was measured with a single item followed by 4-point Likert-type response categories. Parents were asked: Since your teen's last well-child visit how much have you talked with your teen about alcohol? (Not at all (1), A little bit (2), Quite a bit (3), or A lot (4)). Teens were asked: Since your last well-child visit, how often have you and your (mother/father) talked about alcohol? (Never (1), Rarely (2), Sometimes (3), or Often (4)).
- Frequency of Communication About Sex [ Time Frame: 4-6 months post-enrollment ]Frequency of communication about sex was measured with a single item followed by 4-point Likert-type response categories. Parents were asked: Since your teen's last well-child visit how much have you talked with your teen about sex? (Not at all (1), A little bit (2), Quite a bit (3), or A lot (4)). Teens were asked: Since your last well-child visit, how often have you and your (mother/father) talked about sex? (Never (1), Rarely (2), Sometimes (3), or Often (4)).
- Parent-teen Communication About Reasons the Teen Wants to Drive [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about reasons the teen wants to drive. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About the Kinds of Risky Driving Situations That Might Come up in His or Her Friend Group [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about the kinds of risky driving situations that might come up in his or her friend group. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About Pennsylvania's Graduated Driver Licensing Laws [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about about Pennsylvania's GDL laws. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About Wearing a Seatbelt [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about wearing a seatbelt. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About Dangers of Distracted Driving [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about dangers of distracted driving. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About Being a Safe Passenger [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about being a safe passenger. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About What to do in a Crash [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about what to do in a crash. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About What to do if Stopped by a Police Officer [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about what to do if stopped by a police officer. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About Driving Under the Influence of Drugs or Alcohol [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about driving under the influence of drugs or alcohol. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About What to do if the Teen Needs a Safe Ride Home [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about what to do if the teen needs a safe ride home. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).
- Parent-teen Communication About Stopping a Friend From Driving Under the Influence of Drugs or Alcohol [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about stopping a friend from driving under the influence of drugs or alcohol. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).stopping a friend from riding with a driver who is under the influence of drugs or alcohol
- Parent-teen Communication About Stopping a Friend From Riding With a Driver Who is Under the Influence of Drugs or Alcohol [ Time Frame: 6 months post-enrollment ]Six months after baseline, parents reported on the frequency that they talked about stopping a friend from riding with a driver who is under the influence of drugs or alcohol. Parents selected from one of the following response choices: "never talked about" (0); "talked about once or twice" (1); "talked about three or four times" (2); "talked about a lot, about 5 times or more" (3).

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Ages Eligible for Study: | 14 Years to 17 Years (Child) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | Yes |
Inclusion Criteria:
- CHOP Primary Care patient
- Scheduled for a well-child visit that parent and teen both plan to attend within 3 weeks of enrollment
- [Teen Driving Arm Only] Planning on having the medical certification for the permit application completed at their next well child visit and planning on taking their driving permit test in the next 8 weeks
Exclusion Criteria:
- Not fluent in written or spoken English
- Developmental Delay or Pervasive Developmental Disorder
- Pregnant female
- [Teen Driving Arm Only] Already has driving permit (has taken and passed the knowledge test) and/or the medical certification for the permit application was not completed at the well child visit

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT02554682
United States, Pennsylvania | |
The Children's Hospital of Philadelphia | |
Philadelphia, Pennsylvania, United States, 19104 |
Principal Investigator: | Carol A Ford, MD | Children's Hospital of Philadelphia |
Documents provided by Children's Hospital of Philadelphia:
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Children's Hospital of Philadelphia |
ClinicalTrials.gov Identifier: | NCT02554682 |
Other Study ID Numbers: |
15-011732 |
First Posted: | September 18, 2015 Key Record Dates |
Results First Posted: | March 25, 2019 |
Last Update Posted: | April 10, 2019 |
Last Verified: | April 2019 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Adolescent Health Sexual Health Parent-Teen Communication Teen Driving Alcohol Prevention |