Guy S. Parcel

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The practice of health education involves three major program-planning activities: needs assessment, program development, and evaluation. Over the past 20 years, significant enhancements have been made to the conceptual base and practice of health education. Models that outline explicit procedures and detailed conceptualization of community assessment and(More)
OBJECTIVE To assess the outcomes of health behavior interventions, focusing on the elementary school environment, classroom curricula, and home programs, for the primary prevention of cardiovascular disease. DESIGN A randomized, controlled field trial at four sites with 56 intervention and 40 control elementary schools. Outcomes were assessed using(More)
An interactive multimedia computer game to enhance self-management skills and thereby improve asthma outcomes in inner city children with asthma was evaluated. Subjects aged 6-17 were recruited from four pediatric practices and randomly assigned to the computer intervention condition or to the usual-care comparison. The main character in the game could(More)
OBJECTIVES This study evaluated the long-term effectiveness of Safer Choices, a theory-based, multi-component educational program designed to reduce sexual risk behaviors and increase protective behaviors in preventing HIV, other STDs, and pregnancy among high school students. METHODS The study used a randomized controlled trial involving 20 high schools(More)
Health promotion interventions intended to improve dietary behavior frequently incorporate self-efficacy as a construct to enhance behavior change. This paper presents results from a study to establish psychometric properties of a scale to measure children's self-efficacy for selecting healthful food. As part of a series of pilot studies to develop(More)
This study evaluated the effects of an AIDS/STD curriculum for 9th- and 10th-grade students in the Netherlands. Curriculum development was based on (1) theory-based need assessments among students and teachers, (2) pilot testing of data-based and theory-based methods and materials, and (3) cooperation between researchers and students, teachers, and(More)
BACKGROUND National health objectives call for improved diet and more regular physical activity among children. We tested the effects of a school-based program to improve students' diet and physical activity behavior at school. METHODS Two of the four elementary schools in one Texas school district were assigned to intervention and two to control(More)
PURPOSE To measure the relative impact of a school-based human immunodeficiency virus (HIV)-, sexually transmitted disease (STD)-, and pregnancy-prevention intervention on sexual risk-taking behaviors of different subgroups of students. METHODS Twenty schools were randomly assigned to receive Safer Choices or a standard knowledge-based HIV-education(More)
This paper presents the results of theory-based intervention strategies to increase the adoption of a tobacco prevention program. The adoption intervention followed a series of dissemination intervention strategies targeted at 128 school districts in Texas. Informed by Social Cognitive Theory, the intervention provided opportunities for districts to learn(More)
OBJECTIVE To assess differences through grade 8 in diet, physical activity, and related health indicators of students who participated in the Child and Adolescent Trial for Cardiovascular Health (CATCH) school and family intervention from grades 3 through 5. DESIGN Follow-up of the 4-center, randomized, controlled field trial with 56 intervention and 40(More)