C. Dent

发表

Omega: A General Formulation of the Rand Index of Cluster Recovery Suitable for Non-disjoint Solutions.

L. Collins, C. Dent, 1988, Multivariate behavioral research.

Group self-identification as a prospective predictor of drug use and violence in high-risk youth.

C. Dent, S. Sussman, W. J. McCullar, 2000, Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors.

The associations of social self-control, personality disorders, and demographics with drug use among high-risk youth.

C. Dent, S. Sussman, W. McCuller, 2003, Addictive behaviors.

Perceived invulnerability and cigarette smoking among adolescents.

C W Dent, C. Dent, S. Sussman, 2000, Addictive behaviors.

Community level alcohol availability and enforcement of possession laws as predictors of youth drinking.

A. Biglan, C. Dent, J. Grube, 2005, Preventive medicine.

Exposure to Alcohol Advertisements and Teenage Alcohol-Related Problems

Clyde W. Dent, Jerry L. Grenard, C. Dent, 2013, Pediatrics.

Psychosocial Predictors of Young Adolescent Cigarette Smoking: A Sixteen-Month, Three-Wave Longitudinal Study

Linda M. Collins, William B. Hansen, Brian R. Flay, 1987 .

Condom skills education and sexually transmitted disease reinfection

C. Dent, Matthew P. Cohen, D. Mackinnon, 1991 .

Use of focus groups in developing an adolescent tobacco use cessation program: Collective norm effects.

Brian R. Flay, Clyde W. Dent, Steve Sussman, 1991 .

Sensation seeking and drug use among high risk Latino and Anglo adolescents

C. Dent, S. Sussman, A. Stacy, 1994 .

Continuation High Schools: Youth at Risk for Drug Abuse

C. A. Johnson, C. Dent, S. Sussman, 1995, Journal of drug education.

Marijuana Use: Current Issues and New Research Directions

C. A. Johnson, C. Dent, S. Sussman, 1996 .

Refusal assertion versus conversational skill role-play competence: relevance to prevention of tobacco use.

B. Flay, C. Dent, S. Sussman, 1993, Statistics in medicine.

The television, school and family smoking prevention/cessation project. IV. Controlling for program success expectancies across experimental and control conditions.

B. Flay, C. A. Johnson, C. Dent, 1989, Addictive behaviors.

Characteristics of eighth-grade students who initiate self-care in elementary and junior high school.

B. Flay, C. A. Johnson, C. Dent, 1990, Pediatrics.

Evaluation of California's in-school tobacco use prevention education (TUPE) activities using a nested school-longitudinal design, 2003–2004 and 2005–2006

C. Dent, W. McCarthy, Hye-Youn Park, 2010, Tobacco Control.

Does free nicotine replacement therapy for young adults prompt them to call a quitline?

C. Dent, J. Maher, B. Pizacani, 2007, Tobacco Control.

Participants and nonparticipants of a mass media self-help smoking cessation program.

C. A. Johnson, C. Dent, S. Sussman, 1994, Addictive behaviors.

Tailoring outdoor tobacco advertising to minorities in Los Angeles County.

C. A. Johnson, C. Dent, S. Sussman, 1998, Journal of health communication.

The impact of clean indoor air exemptions and preemption policies on the prevalence of a tobacco-specific lung carcinogen among nonsmoking bar and restaurant workers.

C. Dent, S. Hecht, J. Maher, 2007, American journal of public health.

Prediction of violence perpetration among high-risk youth.

C. Dent, S. Sussman, S. Skara, 2004, American journal of health behavior.

Exercise training effects on premenstrual distress and ovarian steroid hormones

L. Bernstein, C. Dent, J. Stoddard, 2006, European Journal of Applied Physiology.

Motivation to quit as a mediator of tobacco cessation among at-risk youth.

C. Dent, S. Sussman, W. McCuller, 2006, Addictive behaviors.

Psychosocial Variables as Prospective Predictors of Violent Events among Adolescents.

B. Flay, C. Dent, S. Sussman, 1994 .

The association of current stimulant use with demographic, substance use, violence-related, social and intrapersonal variables among high risk youth.

C. Dent, S. Sussman, A. Stacy, 1999, Addictive behaviors.

One-Year Prediction of Violence Perpetration Among High-Risk Youth

C. Dent, S. Sussman, A. Stacy, 1999 .

Influence of a substance-abuse-prevention curriculum on violence-related behavior.

L. Dahlberg, C. Dent, S. Sussman, 2002, American journal of health behavior.

Does tobacco industry marketing excessively impact lesbian, gay and bisexual communities?

C. Dent, C. Spigner, B. Pizacani, 2008, Tobacco Control.

Relation between access to tobacco and adolescent smoking

A. Biglan, C. Dent, 2004, Tobacco Control.

Two-year behavior outcomes of project towards no tobacco use.

B. Flay, C. Dent, S. Sussman, 1995, Journal of consulting and clinical psychology.

Project Towards No Tobacco Use: implementation, process and post-test knowledge evaluation.

B. Flay, C. Dent, S. Sussman, 1993, Health education research.

Ethnic differences in adolescent smoking prevalence in California: are multi-ethnic youth at higher risk?

J. Unger, C. A. Johnson, C. Dent, 2000, Tobacco control.

Taking, Depressed Mood, and Academic Achievement Relationship Between After-School Care of Adolescents and Substance Use, Risk

B. Radziszewska, B. Flay, C. Dent, 2007 .

The integrity of smoking prevention curriculum delivery

B. Flay, C. A. Johnson, C. Dent, 1989 .

One-year follow-up evaluation of Project Towards No Drug Abuse (TND-4).

C. Dent, S. Sussman, L. Rohrbach, 2008, Preventive medicine.

Six-month and one-year effects of project EX-4: a classroom-based smoking prevention and cessation intervention program.

C. Dent, S. Sussman, L. Rohrbach, 2007, Addictive behaviors.

Project EX: outcomes of a teen smoking cessation program.

C. Dent, S. Sussman, K. Lichtman, 2001, Addictive behaviors.

Short-term effects of Project EX-4: a classroom-based smoking prevention and cessation intervention program.

C. Dent, S. Sussman, L. Rohrbach, 2007, Addictive behaviors.

Project EX: A Program of Empirical Research on Adolescent Tobacco Use Cessation

C. Dent, S. Sussman, W. McCuller, 2004, Tobacco Induced Diseases.

Project EX: A Program of Empirical Research on Adolescent Tobacco Use Cessation

C. Dent, S. Sussman, W. McCuller, 2004, Tobacco induced diseases.

Project Towards No Drug Abuse: generalizability to a general high school sample.

C. Dent, S. Sussman, A. Stacy, 2001, Preventive medicine.

The influence of observing carbon monoxide level on cigarette smoking by public prenatal patients.

G. Koch, K. Bauman, C. Dent, 1983, American Journal of Public Health.

ALCOHOLIC LIVER DISEASE (ALD): A NEW DOMAIN FOR PREVENTION EFFORTS

C. Dent, S. Sussman, H. Tsukamoto, 2002, Substance use & misuse.

Use of the “Theme Study” as Means of Curriculum Development in Continuation High Schools

C. Dent, S. Sussman, A. Stacy, 1996, Journal of drug education.

Adolescent smokeless tobacco incidence: relations with other drugs and psychosocial variables.

B. Flay, C. A. Johnson, C. Dent, 1987, Preventive medicine.

Explaining the link between violence perpetration, victimization and drug use.

C. Dent, S. Sussman, P. Sun, 2005, Addictive behaviors.

Which lesson components mediate refusal assertion skill improvement in school-based adolescent tobacco use prevention?

B. Flay, C. Dent, S. Sussman, 1993, The International journal of the addictions.

Naturalistic observation of adolescent tobacco use.

B. Flay, C. Dent, S. Sussman, 1993, The International journal of the addictions.

Drug Abuse Prevention Program Development

C. Dent, S. Sussman, L. Baezconde-Garbanati, 2003, Evaluation & the health professions.

Immediate Impact of Social Influence-Oriented Substance Abuse Prevention Curricula in Traditional and Continuation High Schools

C. A. Johnson, C. Dent, S. Sussman, 1995 .

Prospective correlates of exclusive or combined adolescent use of cigarettes and smokeless tobacco: a replication-extension.

B. Flay, C. Dent, S. Sussman, 1995, Addictive behaviors.

Activity involvement, risk-taking, demographic variables, and other drug use: prediction of trying smokeless tobacco.

J. Graham, B. Flay, C. A. Johnson, 1989, NCI monographs : a publication of the National Cancer Institute.

Psychosocial predictors of cigarette smoking onset by white, black, Hispanic, and Asian adolescents in Southern California.

B. Flay, C. A. Johnson, C. Dent, 1987, MMWR supplements.

higher risk ? prevalence in California : are multi-ethnic youth at Ethnic differences in adolescent smoking

J. Unger, C. Dent, L. Rohrbach, 2000 .

Predicting regular cigarette use among continuation high school students.

C. Dent, S. Sussman, S. Skara, 2001, American journal of health behavior.

Secondhand smoke exposure in Alaskan households with children.

C. Dent, J. Maher, D. Dowler, 2010, Rural and remote health.

Prospective psychosocial, interpersonal, and behavioral predictors of handgun carrying among adolescents.

B. Flay, C. Dent, C. Chou, 1998, American journal of public health.

One-year prospective prediction of marijuana use cessation among youth at continuation high schools.

C. Dent, S. Sussman, 1999, Addictive behaviors.

smokingbetween access to tobacco and adolescent

A. Biglan, C. Dent, 2006 .

Adolescents' first and most recent use situations of smokeless tobacco and cigarettes: similarities and differences.

B. Flay, C. Dent, S. Sussman, 1990, Addictive behaviors.

Self-generated drug outcomes in high-risk adolescents.

C. Dent, S. Sussman, A. Stacy, 1996 .

Tracking Procedures for Locating High-Risk Youth

C. Dent, S. Sussman, W. McCuller, 2002, Evaluation & the health professions.

Self-Initiated Quitting among Adolescent Smokers 1

B. Flay, C. Dent, S. Sussman, 1998 .

Correlates of exclusive or combined use of cigarettes and smokeless tobacco among male adolescents.

B. Flay, C. Dent, S. Sussman, 1993, Addictive behaviors.

The one-year prospective prediction of substance abuse and dependence among high-risk adolescents.

C. Dent, S. Sussman, L. Leu, 2000, Journal of substance abuse.

Use of the fagerstrom tolerance questionnaire for measuring nicotine dependence among adolescent smokers in China: a pilot test.

C. A. Johnson, S. Azen, J. Unger, 2002, Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors.

Development and Immediate Impact of a Self-Instruction Curriculum for an Adolescent Indicated Drug Abuse Prevention Trial

C. Dent, S. Sussman, W. McCuller, 2002, Journal of drug education.

The television, school, and family project. V. The impact of curriculum delivery format on program acceptance.

B. Flay, C. A. Johnson, C. Dent, 1989, Preventive medicine.

Five-year prospective prediction of self-initiated quitting of cigarette smoking of high-risk youth.

C. Dent, S. Sussman, 2007, Addictive Behaviours.

Project Toward No Tobacco Use: One-Year Behavior Outcomes

B. Flay, C. Dent, S. Sussman, 1993 .

Spirituality as a 1-Year Prospective Predictor of Violence Perpetration and Drug Use Among Youth at Continuation High Schools

C. Dent, S. Sussman, B. Hoffman, 2005 .

Influence of an objective measure on self-reports of behavior.

Karl E. Bauman, Clyde W. Dent, K. Bauman, 1982, The Journal of applied psychology.

Design and Analysis Issues in Community-Based Drug Abuse Prevention

Clyde W. Dent, Joel M. Moskowitz, David M. Murray, 1996 .

The protective influence of spirituality and "Health-as-a-Value" against monthly substance use among adolescents varying in risk.

J. Unger, C. Dent, S. Sussman, 2004, The Journal of adolescent health : official publication of the Society for Adolescent Medicine.

Outcome of a Tobacco Use Cessation Randomized Trial with High-School Students

B. Flay, C. Dent, S. Sussman, 2009, Substance use & misuse.

Tobacco Cessation Outcome of a Tobacco Use Cessation Randomized Trial with High-School Students

B. Flay, C. Dent, S. Sussman, 2009 .

Depression, Suicidal Ideation, and Substance Use Among Continuation High School Students

C. Dent, C. Chou, S. Sussman, 1998 .

Interpersonal conflict tactics and substance use among high-risk adolescents.

J. Unger, C. Dent, S. Sussman, 2003, Addictive behaviors.

Independent evaluation of the California Tobacco Control Program: relationships between program exposure and outcomes, 1996-1998.

G. Norman, K. Ribisl, J. Unger, 2002, American journal of public health.

Is a statewide tobacco quitline an appropriate service for specific populations?

C. Dent, J. Maher, B. Pizacani, 2007, Tobacco Control.

Peer group self-identification among alternative high school youth: A predictor of their psychosocial functioning five years later

J. Unger, C. Dent, S. Sussman, 2004 .

Developing School-Based Tobacco Use Prevention and Cessation Programs

B. Flay, C. Dent, S. Sussman, 1994 .

Relationship between after-school care of adolescents and substance use, risk taking, depressed mood, and academic achievement.

B. Radziszewska, B. Flay, C. Dent, 1993, Pediatrics.

Cost-effectiveness of a school-based tobacco-use prevention program.

L. Wang, C. Dent, S. Sussman, 2001, Archives of pediatrics & adolescent medicine.

Reasons for quitting and smoking temptation among adolescent smokers: gender differences.

B. Flay, C. Dent, S. Sussman, 1998, Substance use & misuse.

Concurrent prediction of drug use among high-risk youth.

C. Dent, S. Sussman, W. McCuller, 2001, Addictive behaviors.

The television, school, and family smoking prevention and cessation project. VIII. Student outcomes and mediating variables.

D. Hedeker, B. Flay, C. A. Johnson, 1995, Preventive medicine.

Implicit Cognition and Dissocative Experiences as Predictors of Adolescent Substance Use

C. Dent, S. Sussman, A. Stacy, 2005, The American journal of drug and alcohol abuse.

Adolescent nonsmokers, triers, and regular smokers' estimates of cigarette smoking prevalence: When do overestimations occur and by whom?

B. Flay, C. A. Johnson, C. Dent, 1988 .

Alcohol Advertising Exposure and Adolescent Alcohol Use: A Comparison of Exposure Measures

Jennifer B. Unger, Clyde W. Dent, J. Unger, 2003 .

Demographic, psychosocial and behavioral differences in samples of actively and passively consented adolescents.

B. Flay, C. Dent, S. Sussman, 1993, Addictive behaviors.

One-year outcomes of Project Towards No Drug Abuse.

C W Dent, A W Stacy, C. Dent, 1998, Preventive medicine.

Smoking patterns in Oregon youth: effects of funding and defunding of a comprehensive state tobacco control program.

A. Biglan, C. Dent, J. Maher, 2009, The Journal of adolescent health : official publication of the Society for Adolescent Medicine.

Substance use among eighth-grade students who take care of themselves after school.

B. Flay, C. A. Johnson, C. Dent, 1989, Pediatrics.

Availability of tobacco products at stores located near public schools.

B. Flay, C. Dent, S. Sussman, 1991, The International journal of the addictions.

Characteristics of Tobacco Users in the Lumber Industry

C. Dent, S. Sussman, S. Donaldson, 1997 .

Health Behavior, Quality of Work Life, and Organizational Effectiveness in the Lumber Industry

C. Dent, S. Sussman, S. Donaldson, 1999, Health education & behavior : the official publication of the Society for Public Health Education.

Psychosocial predictors of health risk factors in adolescents.

B. Flay, C. Dent, S. Sussman, 1995, Journal of pediatric psychology.

Tobacco, Alcohol, and other Drug use among High-Risk Young People: A Five-Year Longitudinal Study from Adolescence to Emerging Adulthood

C. Dent, S. Sussman, L. Rohrbach, 2005 .

Implementation effectiveness trial of a social influences smoking prevention program using schools and television

L. Collins, B. Flay, C. A. Johnson, 1987 .

Expectancy Accessibility and the Influence of Outcome Expectancies on Adolescent Smokeless Tobacco Use

B. Flay, C. Dent, S. Sussman, 1990 .

The Relations of Pro‐Drug‐Use Myths With Self‐Reported Drug Use Among Youth at Continuation High Schools1

C. Dent, S. Sussman, A. Stacy, 1996 .

Condoms for Men, Not Women: Results of Brief Promotion Programs

C. Dent, D. Mackinnon, D. Cohen, 1992, Sexually transmitted diseases.

Reducing HIV and Partner Violence Risk Among Women with Criminal Justice System Involvement: A Randomized Controlled Trial of Two Motivational Interviewing-based Interventions

C. Dent, B. Weir, J. Maher, 2009, AIDS and Behavior.

Effective Tobacco Control in Washington State: A Smart Investment for Healthy Futures

C. Dent, K. Rohde, M. Stark, 2007, Preventing chronic disease.

A meta-analysis of teen cigarette smoking cessation.

C. Dent, S. Sussman, P. Sun, 2006, Health psychology : official journal of the Division of Health Psychology, American Psychological Association.

Peer-group association and adolescent tobacco use.

B. Flay, C. Dent, S. Sussman, 1990, Journal of abnormal psychology.

Project towards no tobacco use: 1-year behavior outcomes.

B. Flay, C. Dent, S. Sussman, 1993, American journal of public health.

Self-initiated quitting among adolescent smokers.

B. Flay, C. Dent, S. Sussman, 1998, Preventive medicine.

Media Manipulation of Adolescents' Personal Level Judgments regarding Consequences of Smokeless Tobacco Use

B. Flay, C. Dent, S. Sussman, 1989, Journal of drug education.

Exposure to televised alcohol ads and subsequent adolescent alcohol use.

Jennifer B Unger, Alan W Stacy, J. Unger, 2004, American journal of health behavior.

Three Methods of Assessing Adolescent School-Level Experimentation of Tobacco Products

J. Graham, B. Flay, C. Dent, 1990 .

Moderators of Peer Social Influence in Adolescent Smoking

Brian R. Flay, Clyde W. Dent, Dee Burton, 1992 .

Self-generated alcohol outcomes in 8th and 10th graders: exposure to vicarious sources of alcohol information.

C. Dent, A. Stacy, J. Zogg, 2004, Addictive behaviors.

Pro-drug-use myths and competing constructs in the prediction of substance use among youth at continuation high schools: a one-year prospective study

C. Dent, S. Sussman, S. Ames, 1999 .

The Motivation, Skills, and Decision-Making Model of “Drug Abuse” Prevention

T. Wills, C. Dent, S. Sussman, 2004, Substance use & misuse.

Project towards no drug abuse: a review of the findings and future directions.

C. Dent, S. Sussman, A. Stacy, 2002, American journal of health behavior.

The Multilevel Structure of Four Adolescent Problems

J. Seeley, A. Biglan, C. Dent, 2006, Prevention Science.

Physical and relational aggression as predictors of drug use: gender differences among high school students.

C. Dent, S. Sussman, S. Skara, 2008, Addictive behaviors.

Parenting style and adolescent depressive symptoms, smoking, and academic achievement: Ethnic, gender, and SES differences

B. Radziszewska, C. Dent, B. Flay, 1996, Journal of Behavioral Medicine.

Is smokeless tobacco use becoming more common among U.S. male smokers? Trends in Alaska.

C. Dent, J. Maher, K. Rohde, 2012, Addictive behaviors.

Group self-identification and adolescent cigarette smoking: a 1-year prospective study.

B. Flay, C. Dent, S. Sussman, 1994, Journal of abnormal psychology.

The Longitudinal Guttman Simplex: A New Methodology for Measurement of Dynamic Constructs in Longitudinal Panel Studies

Linda M. Collins, Norman Cliff, Clyde W. Dent, 1988 .

Implementation and Process Evaluation of a Student "School-as-Community" Group

C. Dent, S. Sussman, M. Pentz, 1997, Evaluation review.

The Impact of a Written Parental Consent Policy On Estimates From a School-Based Drug Use Survey

C. Dent, S. Sussman, A. Stacy, 1997, Evaluation review.

Is Current Drug Abuse Prevention Programming Generalizable Across Ethnic Groups?

C. Dent, S. Sussman, P. Ellickson, 1996 .

The Use of Archival Data To Select and Assign Schools in a Drug Prevention Trial

B. Flay, C. Dent, S. Sussman, 1993 .

The Association of Group Self-Identification and Adolescent Drug Use in Three Samples Varying in Risk'

B. Flay, C. Dent, S. Sussman, 1999 .

Predictors of Misreporting Cigarette Smoking Initiation Among Adolescents

B. Flay, C. Dent, S. Sussman, 1996, Evaluation review.

Ingroup Versus Outgroup Perceptions of the Characteristics of High-Risk Youth: Negative Stereotyping1

B. Flay, C. Dent, S. Sussman, 1993 .

Relations of coping effort, coping strategies, perceived stress, and cigarette smoking among adolescents.

B. Flay, C. A. Johnson, C. Dent, 1993, The International journal of the addictions.

Music preference as a diagnostic indicator of adolescent drug use.

B. Flay, C. Dent, S. Sussman, 1992, American journal of public health.

Project Towards No Drug Abuse

C. Dent, S. Sussman, 2000 .

Prospective Prediction of Alternative High School Graduation Status at Emerging Adulthood1

C. Dent, S. Sussman, L. Rohrbach, 2004 .

SELF-REPORTED HIGH-RISK LOCATIONS OF DRUG USE AMONG DRUG OFFENDERS

C. Dent, S. Sussman, A. Stacy, 2001 .

Self-Reported High-Risk Locations of Drug Use among Drug Offenders: Ethnic and Gender Differences

C. Dent, S. Sussman, A. Stacy, 2000, The American journal of drug and alcohol abuse.

One-Year Prospective Prediction of Drug Use from Stress-Related Variables

C. Dent, S. Sussman, 2000, Substance use & misuse.

The correlates of substance abuse and dependence among adolescents at high risk for drug abuse.

C. Dent, S. Sussman, E. Galaif, 1997, Journal of substance abuse.

Corrigendum to “Six-month and 1-year Effects of Project EX-4, A Classroom-Based Smoking Prevention and Cessation Intervention Program” [Addictive Behaviors 32/12 (2007) 3005–3014]

C. Dent, S. Sussman, L. Rohrbach, 2010 .

Vulnerability to Victimization, Concurrent Problem Behaviors, and Peer Influence as Predictors of In-School Weapon Carrying Among High School Students

T R Simon, C W Dent, S Sussman, 1997, Violence and Victims.

Project Towards No Drug Abuse: long-term substance use outcomes evaluation.

C. Dent, S. Sussman, S. Skara, 2006, Preventive medicine.

The correlates of addiction concern among adolescents at high risk for drug abuse.

C. Dent, S. Sussman, 1996, Journal of substance abuse.

Fidelity of Implementation in Project Towards No Drug Abuse (TND): A Comparison of Classroom Teachers and Program Specialists

Louise A. Rohrbach, Clyde W. Dent, Steve Sussman, 2007, Prevention Science.

Five-year prospective prediction of marijuana use cessation of youth at continuation high schools.

C. Dent, S. Sussman, 2004, Addictive behaviors.

Context effects and false memory for alcohol words in adolescents.

C. Dent, A. Stacy, M. Zack, 2009, Addictive behaviors.

Implicit cognition in adolescent drug use.

C. Dent, S. Sussman, A. Stacy, 1996 .

Immediate impact of thirty-two drug use prevention activities among students at continuation high schools.

C. A. Johnson, C. Dent, S. Sussman, 1997, Substance use & misuse.

Implementation and Process Evaluation of a School-Based Drug Abuse Prevention Program: Project towards No Drug Abuse

C. Dent, S. Sussman, A. Stacy, 1998, Journal of drug education.

Project Towards No Drug Abuse: two-year outcomes of a trial that compares health educator delivery to self-instruction.

C. Dent, S. Sussman, W. McCuller, 2003, Preventive medicine.

Group counseling at STD clinics to promote use of condoms.

D. Mackinnon, C. Dent, D. Cohen, 1992, Public health reports.

One-Y ear Drug Use Variables Prospective Prediction of from Stress-Related

C. Dent, S. Sussman, 2000 .

A nonverbal test of naturalistic memory for alcohol commercials

J. Unger, C. Dent, A. Stacy, 2004 .

Project towards no tobacco use: 1-year behavior outcomes.

B. Flay, C. Dent, S. Sussman, 1993, American journal of public health.

Relation between access to tobacco and adolescent smoking

A. Biglan, C. Dent, 2004, Tobacco Control.

Smoking patterns in Oregon youth: effects of funding and defunding of a comprehensive state tobacco control program.

A. Biglan, C. Dent, J. Maher, 2009, The Journal of adolescent health : official publication of the Society for Adolescent Medicine.