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This trial evaluated the impact of N2K, a three-year quasi-experimental study to delay sexual initiation and increase condom and contraception use among high school students. The program was administered to treatment students beginning in the fall of 2012 (9th grade) and continued through the spring of 2015 (11th grade). The purpose of this study was to measure: 1) the impact of N2K on sexual initiation at the end of the three-year program and 2) the impact of N2K on condom or contraception non-use at the end of the program.
Need to Know is based on a framework of positive youth development intended to delay sexual initiation and reduce the rate of teenage pregnancy. The N2K curriculum is designed to support the treatment participants throughout their high school career with consecutive dosage for three years from 9th through 11th grade. The intended dosage for treatment participants is 16 lessons (25 minutes each) each year of the program (8 in the fall and 8 in the spring). The program consists of 3 years (48 lessons) of curriculum to be delivered in a group or classroom setting of up to 32 students. There are 16 lessons in each year of the curriculum. Eight lessons are intended to be taught in the fall semester and eight in the spring. Each lesson is 25 minutes long, and can be taught in any class period that allows for 25 minutes of content instruction.
The 9th grade course is N2K: Basics and consists of lessons that encourage self-discovery and goal setting, discuss human growth and development, adolescent risk behaviors, communication, STDs, abstinence, contraceptives, teen dating violence, legal issues, responsible media use, refusal skills, and role-playing. The 10th grade N2K: Decisions consists of lessons that increase decision making skills, clarify values, promote healthy relationships and the benefits of delaying sex, and review of anatomy, contraceptives, STDs, and legal issues. It promotes the development of critical thinking skills and application of the facts to real life situations. N2K: Decisions includes an original webisode series of 11 episodes, the first of which is viewed in class, and the others can be viewed online outside of class. The webisode series adds narrative to the basic facts being presented in class. The series runs, in conjunction with the 10th grade curriculum lessons 3-8. The 11th grade N2K: Relationships reinforces basic themes taught in prior years. It emphasizes healthy relationships, healthy living, and taking responsibility for personal health as an adolescent matures into adult life. The last three lessons are a culminating activity that allows participants to express what they have learned and present it to others. About 35% of the 48 sessions focuses on abstinence, 27% highlight positive youth development (PYD), 13% discuss risky behaviors, 12% address STDs, 8% cover contraceptives, and 5% discuss anatomy and puberty in the cumulative three years of the N2K Curriculum.
A paper and pencil survey was administered in school to assess program impacts. Treatment and comparison students were surveyed at baseline (fall 2011 for comparison and fall 2012 for treatment), and for the treatment group, surveying took place before the intervention began. Surveys were administered at the end of each year of programming (end of 9th grade, end of 10th grade, and end of 11th grade), which for the treatment students was after the N2K programming was completed for the year.
Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Prevention
The Need to Know students received the N2K curriculum as described previously
The University of Texas Health Science Center at San Antonio
Published on BioPortfolio: 2015-09-04T00:08:23-0400
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