The influence of a family program on adolescent tobacco and alcohol use. The efficacy of social-influence prevention programs versus "standard care": are new initiatives needed? Reducing the risks of alcohol use among urban youth: three-year effects of a computer-based intervention with and without parent involvement. Tobacco use measurement, prediction, and intervention in elementary schools in four states: the CATCH Study. The Tromsø Survey: the Family Intervention study--the effect of intervention on some coronary risk factors and dietary habits, a 6-year follow-up. An adaptive approach to family intervention: linking engagement in family-centered intervention to reductions in adolescent problem behavior. Long-term follow-up of the Busselton six-year controlled trial of prevention of children's behavior disorders. How generalizable are the effects of smoking prevention programs? Refusal skills training and parent messages in a teacher-administered program. Long-term effects of nurse home visitation on children's criminal and antisocial behavior: 15-year follow-up of a randomized controlled trial. Tobacco and alcohol use outcomes of a school-based intervention in New Delhi. Evaluation of two school smoking education programmes under normal classroom conditions. Effects of a controlled family-based health education/counseling intervention. Sustaining and broadening intervention impact: a longitudinal randomized trial of 3 adolescent risk reduction approaches. Effects of a school-based smoking prevention program among subgroups of adolescents. Randomized trial of brief family interventions for general populations: adolescent substance use outcomes 4 years following baseline. Longitudinal substance initiation outcomes for a universal preventive intervention combining family and school programs. Can parents who smoke socialise their children against smoking? Results from the Smoke-free Kids intervention trial. A randomized controlled trial of two primary school intervention strategies to prevent early onset tobacco smoking. A randomized trial of a family-based smoking prevention intervention in managed care. Preventing escalation in problem behaviors with high-risk young adolescents: immediate and 1-year outcomes.
This study examined a family-directed program's effectiveness in preventing adolescent tobacco and alcohol use in a general population.
                Adolescents aged 12 to 14 years and their families were identified by random-digit dialing throughout the contiguous United States. After providing baseline data by telephone interviews, they were randomly allocated to receive or not receive a family-directed program featuring mailed booklets and telephone contacts by health educators. Follow-up telephone interviews were conducted 3 and 12 months after program completion.
                The findings suggested that smoking onset was reduced by 16.4% at 1 year, with a 25.0% reduction for non-Hispanic Whites but no statistically significant program effect for other races/ethnicities. There were no statistically significant program effects for smokeless tobacco or alcohol use onset.
                The family-directed program was associated with reduced smoking onset for non-Hispanic Whites, suggesting that it is worthy of further application, development, and evaluation. This study evaluates the effects of a school-based smoking prevention program after 1 year, using school (22 middle/elementary schools, 15 high schools) as both the unit of randomization and the unit of analysis. The multigrade level (grades 6 through 9) intervention was designed to address comprehensively the social influence factors that encourage smoking. Teacher survey data indicated that treatment schools had a median of 10 classroom sessions devoted to tobacco/drug use education, 5 of which were the sessions designed for this evaluation, and control schools had also dedicated a median of 10 classroom sessions to tobacco/drug education. Thus, the study evaluated the incremental effects of the social influence intervention compared to "standard-care" curricula. Among those who reported smoking one or more cigarettes in the month prior to the intervention, there was a significant treatment effect on rate of smoking at one year, but no grade level, gender, or interaction effects. The 1-year covariate-adjusted smoking rate among pretest smokers in the treatment schools was 76.6 cigarettes per month, compared to 111.6 cigarettes per month in control schools, a 31.4% difference. These effects were not accounted for by differential subject attrition. The analyses for nonsmokers, however, showed no significant effects, and the program did not affect self-reported alcohol or marijuana use. Taken together with the results of other prevention studies, these results point to the need for the development and evaluation of new initiatives to prevent substance use. This study tested a CD-ROM intervention with and without a parent involvement component to reduce risk of alcohol use among an urban sample of early adolescents.
                Youths (N = 514, mean age 11.5 years at recruitment) were assigned randomly by community site to receive the CD-ROM intervention, the CD-ROM plus parent intervention, or no intervention. All youths completed pretest, posttest and three annual follow-up measurements. After pretesting, youths and parents received their respective interventions.
                Main effects of the intervention and for measurement occasion as well as interaction effects of the intervention by measurement occasion were seen for substance use and related outcomes. Over time, youths in all 3 groups reported increased use of alcohol, tobacco and marijuana; youths who received the interventions reported smaller increases than control youths. At 3-year follow-up, alcohol use was lower for CD-ROM plus parent intervention youths than for CD-ROM only youths, who, in turn, reported less use than controls. Cigarette use was lower for youths in either intervention group than in the control group at posttest and at 1-, 2- and 3-year follow-ups. Marijuana use was lower for youths in either intervention than for controls at 1-, 2- and 3-year follow-ups. Youths in both intervention groups outperformed control youths at posttest and at 1- and 3-year follow-ups on levels of negative and peer influence toward substance use. Finally, at the 3-year follow-up, youths in the CD-ROM plus parent intervention group reported more family involvement in their alcohol use prevention efforts than did youths in the CD-ROM group, who, in turn, reported more positive levels of family involvement than youths in the control group.
                Study findings modestly support the CD-ROM intervention with and without the parent intervention to reduce alcohol use risks among urban early adolescents. The Child and Adolescent Trial for Cardiovascular Health (CATCH) is a multistate field trial examining the effects of school environment, classroom curricula, and family intervention components in promoting the cardiovascular health of elementary school students. The purpose of this paper is to describe the CATCH tobacco use intervention and measurement, including the adoption of tobacco-free school policies.
                In this study, changes in school tobacco use policies and smoking experimentation among students were assessed. Smoking experimentation was measured in all CATCH schools when the students were in their fifth-grade year. A total of 6,527 subjects in 96 schools in California, Louisiana, Minnesota, and Texas answered questions about behaviors and potential correlates of smoking as part of the CATCH health behavior questionnaire in Spring 1994. School tobacco use policy, an important complement to classroom- and home-based prevention efforts, was promoted as part of the CATCH intervention. The degree to which such policy was implemented was measured using surveys of school officials.
                At the end of fifth grade, only 4.8% of the subjects indicated that they had experimented with tobacco. School intervention condition was not a factor in the prediction of experimentation. Those whose best friend or sibling smoked, or who had ready access to cigarettes in the home, were more likely to have experimented with smoking. In the 3 years of the study, the percentages of tobacco-free schools went up from 49.7 to 76.8%. Though differences in the rate of policy adoption could not be directly attributed to the CATCH intervention, the implementation of the tobacco-free schools' policies did vary substantially from state to state. Minnesota and Texas, with stronger state laws supporting local policy, had nearly completely smoke-free schools. In spite of a statewide tobacco control initiative, California was slower to implement school policies. Louisiana, which allows local decision making regarding smoking policy, had the most difficulty establishing a policy for all districts.
                Future studies should examine the impact of parallel policy interventions that are ongoing at both school and state levels. Tobacco-free policies appear to be a crucial part of school-based interventions and must be tailored to political and regional factors affecting a given school district. While most intervention studies on coronary heart disease have focused on the high-risk person only, the present study used the family as the unit of intervention. In the study 1373 high-risk men, ages 30-54 years, were identified on the basis of high total cholesterol (TC) and/or low relative high-density lipoprotein cholesterol (HDL-C) (HDL-C/TC) following the 1979/1980 survey in Tromsø. The men and their families were randomly allocated to a control or intervention condition. The intervention families were given advice on diet, smoking, and exercise. At rescreening in 1986/1987, significantly lower risk factor levels were found in both the intervention men and their spouses compared with those in the control group. For children, the differences were small and mostly nonsignificant. Men, spouses, and children in the intervention group reported more favorable dietary habits than those in the control group. No differences were found in smoking or leisure time physical activity. This study used Complier Average Causal Effect analysis (CACE; see G. Imbens & D. Rubin, 1997) to examine the impact of an adaptive approach to family intervention in the public schools on rates of substance use and antisocial behavior among students ages 11-17. Students were randomly assigned to a family-centered intervention (N = 998) in 6th grade and offered a multilevel intervention that included (a) a universal classroom-based intervention, (b) the Family Check-Up (selected; T. J. Dishion & K. Kavanagh, 2003), and (c) family management treatment (indicated). All services were voluntary, and approximately 25% of the families engaged in the selected and indicated levels. Participation in the Family Check-Up was predicted by 6th-grade teacher ratings of risk, youth reports of family conflict, and the absence of biological fathers from the youths' primary home. Relative to randomized matched controls, adolescents whose parents engaged in the Family Check-Up exhibited less growth in alcohol, tobacco, and marijuana use and problem behavior during ages 11 through 17, along with decreased risk for substance use diagnoses and police records of arrests by age 18. This study reports the follow-up in 1993 of 209 adults, aged 27 to 29 years, who as children had been enrolled in a controlled trial of the prevention of children's behavior disorders. One hundred four control subjects and 105 study subjects, representing 90% of the original cohort, responded to a questionnaire detailing their present social situation and habits, educational achievements, and emotional well-being. The study subjects overall reported significantly fewer neurotic symptoms (p <0.001) than the control subjects; the study women also reported significantly fewer depressive symptoms (p <0.001). A greater proportion of the study subjects, compared with control subjects, had undertaken a university degree or diploma (p <0.013), whereas fewer of the men had attended a school of technology (p <0.049). The study women were less likely to be obese, as defined by a body mass index of 25 or more (p <0.030). The study men and women tended to smoke less than their control subjects, though significant differences were not attained. These results in the experimental group reflected the behavior patterns recorded at 6 years of age, after initial preschool interventional therapy. It appears that the initial benefit obtained from active counseling of mothers about their preschool children's behavior may be long lasting, favorably affecting the individuals' psychologic well-being, educational achievements, and social habits as adults. This study investigated both substantive and methodological issues associated with school-based smoking prevention programs. Substantive issues included the efficacy of a refusal skills training curriculum and of parent messages mailed to students' homes. Methodological issues included the effects of assigning classrooms versus entire schools to experimental conditions and determination of the effects of attrition on internal and external validity. Results revealed differential impact for different subgroups of adolescents. The refusal skills program produced lower rates of smoking than the control condition for students who were smokers at the pretreatment assessment but may have produced detrimental effects among males who were nonsmokers at pretest. The provision of parent messages did not affect outcome. Method of assignment (schools versus classrooms) failed to produce significant effects, and attrition did not affect internal validity. However, the above differential findings, as well as the impact of attrition on external validity, raise questions concerning the generalizability of smoking prevention programs. A program of home visitation by nurses has been shown to affect the rates of maternal welfare dependence, criminality, problems due to use of substances, and child abuse and neglect. However, the long-term effects of this program on children's antisocial behavior have not been examined.
                To examine the long-term effects of a program of prenatal and early childhood home visitation by nurses on children's antisocial behavior.
                Fifteen-year follow-up of a randomized trial. Interviews were conducted with the adolescents and their biological mothers or custodial parents.
                Semirural community in New York.
                Between April 1978 and September 1980, 500 consecutive pregnant women with no previous live births were recruited, and 400 were enrolled. A total of 315 adolescent offspring participated in a follow-up study when they were 15 years old; 280 (89%) were born to white mothers, 195 (62%) to unmarried mothers, 151 (48%) to mothers younger than 19 years, and 186 (59%) to mothers from households of low socioeconomic status at the time of registration during pregnancy.
                Families in the groups that received home visits had an average of 9 (range, 0-16) home visits during pregnancy and 23 (range, 0-59) home visits from birth through the child's second birthday. The control groups received standard prenatal and well-child care in a clinic.
                Children's self-reports of running away, arrests, convictions, being sentenced to youth corrections, initiation of sexual intercourse, number of sex partners, and use of illegal substances; school records of suspensions; teachers' reports of children's disruptive behavior in school; and parents' reports of the children's arrests and behavioral problems related to the children's use of alcohol and other drugs.
                Adolescents born to women who received nurse visits during pregnancy and postnatally and who were unmarried and from households of low socioeconomic status (risk factors for antisocial behavior), in contrast with those in the comparison groups, reported fewer instances (incidence) of running away (0.24 vs 0.60; P = .003), fewer arrests (0.20 vs 0.45; P = .03), fewer convictions and violations of probation (0.09 vs 0.47; P<.001), fewer lifetime sex partners (0.92 vs 2.48; P= .003), fewer cigarettes smoked per day (1.50 vs 2.50; P= .10), and fewer days having consumed alcohol in the last 6 months (1.09 vs 2.49; P = .03). Parents of nurse-visited children reported that their children had fewer behavioral problems related to use of alcohol and other drugs (0.15 vs 0.34; P = .08). There were no program effects on other behavioral problems.
                This program of prenatal and early childhood home visitation by nurses can reduce reported serious antisocial behavior and emergent use of substances on the part of adolescents born into high-risk families. To reduce tobacco use among adolescents.
                Thirty schools in New Delhi, India, were randomly assigned to 3 conditions: school-based and family-based intervention, school-based intervention only, or control group. Students were in the seventh grade at pretest (N = 4,776). The smoking intervention included posters, booklets, classroom activities, debates, and a signature campaign. The family intervention involved home activities. The survey measured tobacco knowledge, attitudes, offers, use, and intentions.
                Intervention students were significantly less likely than controls to have been offered, received, experimented with, or have intentions to use tobacco.
                The project had a significant impact on tobacco use. To assess the effectiveness of two school based smoking education projects in delaying onset of smoking behaviour and in improving health knowledge, beliefs, and values.
                Cluster randomised controlled trial of two projects taught under normal classroom conditions. Schools were allocated to one of four groups to receive the family smoking education project (FSE); the smoking and me project (SAM); both projects in sequence (FSE/SAM); or no intervention at all.
                39 schools in Wales and England matched for size and catchment profile.
                All first year pupils in the schools were included and were assessed on three occasions (4538 before teaching (1988), 3930 immediately after teaching (1989), 3786 at one year follow up (1990)).
                Self reported smoking behaviour (backed by saliva sample) and change in relevant health knowledge, beliefs, and values.
                No consistent significant differences in smoking behaviour, health knowledge, beliefs, or values were found between the four groups. For never smokers at baseline the rate of remaining never smokers in 1990 was 74% (594/804) in the control group, 65% (455/704) in the FSE group, 70% (440/625) in the SAM group, and 69% (549/791) in the FSE/SAM group (chi 2adj = 6.1, df = 3, p = 0.1). Knowledge about effects of smoking rose in all groups from a mean score of 5.4 in 1988 to 6.4 in 1989 and 6.5 in 1990.
                More comprehensive interventions than school health education alone will be needed to reduce teenage smoking. Other measures including further restrictions on access to cigarettes and on the promotion of tobacco products need to be considered. Further research will be needed to develop effective school based health education projects, which should be formally field tested under normal conditions before widespread dissemination. To describe the effects of a controlled family-based health education/counseling intervention on health behaviors of children with a familial history of cardiovascular diseases (FH-CVDs).
                The intervention group (IG, n=432) received 5 counseling sessions. The control groups 1 (CG1, n=200) and 2 (CG2, n=423) received no counseling. Outcome measures comprised changes in diet, exercise, and cigarette smoking.
                The changes in the use of fats and salt, and in exercise, were more favorable in IG than in CG1 and/or CG2.
                Health education/counseling produced positive effects on diet and nutrition in particular and in part in exercise. To determine whether the addition of a parental monitoring intervention (Informed Parents and Children Together [ImPACT]) alone or with "boosters" could enhance (either broaden or sustain or both) the effect of a small group, face-to-face adolescent risk reduction intervention Focus on Kids (FOK).
                A longitudinal, randomized, community-based cohort study was conducted of 35 low-income, community-based, in-town settings. A total of 817 black youths aged 12 to 16 years at baseline were studied. After completion of baseline measures, youths were randomized to receive a face-to-face intervention alone (FOK only), a face-to-face intervention and a parental monitoring intervention (FOK plus ImPACT), or both of the above plus boosters (FOK plus ImPACT plus boosters). Risk and protective behaviors were assessed at 6 and 12 months after intervention.
                At 6 months' follow-up, youths in families that were assigned to FOK plus ImPACT reported significantly lower rates of sexual intercourse, sex without a condom, alcohol use, and cigarette use and marginally lower rates of "risky sexual behavior" compared with youths in families that were assigned to FOK only. At 12 months after intervention, rates of alcohol and marijuana use were significantly lower and cigarette use and overall risk intention were marginally lower among FOK plus ImPACT youths compared with FOK only youths. With regard to the boosters delivered at 7 and 10 months, 2 risk behaviors--use of crack/cocaine and drug selling--were significantly lower among the youths who were assigned to receive the additional boosters compared with youths without the boosters. The rates of the other risk behaviors and intentions did not differ significantly.
                The results of this randomized, controlled trial indicate that the inclusion of a parental monitoring intervention affords additional protection from involvement in adolescent risk behaviors 6 and 12 months later compared with the provision of an intervention that targets adolescents only. At the same time, the results of the present study do not provide sufficient evidence that booster sessions further improve targeted behaviors enough to include them in a combined parent and youth intervention. In autumn 1995 The Norwegian Cancer Society in cooperation with The Research Center for Health Promotion, University of Bergen started a study of school-based interventions aiming at preventing smoking among pupils in Norwegian secondary schools. The study comprised a nationwide sample of 4441 students at 99 schools (195 classes). This panel of students is followed through annual data collections till they graduate in spring 1997. Written consensus from students and parents was obtained from 95%. Schools were systematically allocated to one of four groups: Group A, control; Group B, intervention, containing classroom program, involvement of parents and teacher courses; Group C, like B, but without teacher courses; Group D, like B, but without parental involvement. Baseline data were collected by questionnaires administered in class in November 1994 and the first follow-up survey was carried out in May 1995. At follow-up the proportion of smokers had increased by 8.3 percentage points in Group A (control) and by 1.9 percentage points in Group B (most extensive intervention). As expected, the recruitment of smokers was higher in Groups C and D than in the ideal intervention, but lower than in the control group. Effects of the most extensive program among subgroups of students were examined by comparing Groups A and B. Students are categorized as high risk or low risk based on scores on scales measuring sensation seeking, physical maturity, antisocial behavior and parental smoking. The effect of the program on recruitment of smokers seems to have been at least as strong or even stronger among 'high-risk' students than among other students. This study examined the long-term substance use outcomes of 2 brief interventions designed for general population families of young adolescents. Thirty-three public schools were randomly assigned to 3 conditions: the 5-session Preparing for the Drug Free Years Program, the 7-session Iowa Strengthening Families Program, and a minimal contact control condition. The pretest involved 667 6th graders and their families. Assessments included multiple measures of initiation and current use of alcohol, tobacco, and marijuana. Pretest data were collected in the 6th grade and the reported follow-up data were collected in the 10th grade. Significant intervention-control differences in initiation and current use were found for both interventions. It is concluded that brief family skills-training interventions designed for general populations have the potential to reduce adolescent substance use and thus have important public health implications. This study evaluated the substance initiation effects of an intervention combining family and school-based competency-training intervention components. Thirty-six rural schools were randomly assigned to 1 of 3 conditions: (a) the classroom-based Life Skills Training (LST) and the Strengthening Families Program: For Parents and Children 10-14, (b) LST only, or (c) a control condition. Outcomes were examined 1 year after the intervention posttest, using a substance initiation index (SII) measuring lifetime use of alcohol, cigarettes, and marijuana and by rates of each individual substance. Planned intervention-control contrasts showed significant effects for both the combined and LST-only interventions on the SII and on marijuana initiation. Relative reduction rates for alcohol initiation were 30.0% for the combined intervention and 4.1% for LST only. To evaluate Smoke-free Kids, a new home based programme to assist parents who smoke in socializing their children against smoking.
                Two year randomised controlled trial.
                At baseline, 887 adult smokers who had an abstinent child in the third grade (ages 7-8 years); 671 adults and children were retained through the 24 month follow up.
                Programme modules, newsletters, incentives, support calls.
                Anti-smoking socialisation; susceptibility to smoking.
                Of 327 parents randomised to treatment, 210 obtained adequate treatment by using at least three of five core modules. Programme efficacy analyses, which compared these parents with controls (n = 344), showed that exposure to adequate treatment predicted significantly higher levels in nearly all categories of anti-smoking socialisation three months post-intervention. Two years post-baseline, children of parents who reported adequate treatment scored significantly higher than controls on attributes that reduce susceptibility to smoking, and they scored significantly lower than controls on attributes that raise susceptibility to smoking. Programme effectiveness analyses compared all parents randomised to treatment (n = 327) with controls (n = 344). Treatment effects were evident for several socialisation outcomes; however, these effects were smaller and less consistent than those from the efficacy analyses. Similarly, although treated children scored higher than controls on attributes that reduce susceptibility and lower than controls on attributes that raise susceptibility, several of these between-group differences were not significant.
                Given adequate exposure to the Smoke-free Kids programme, significant beneficial effects were observed on anti-smoking socialisation in households where parents smoke cigarettes, and significant beneficial effects were observed on children's susceptibility to smoking after two years. Improving programme acceptance and utilisation is necessary before programme effectiveness can be demonstrated. In this article, we examine the impact of two universal, grade 1 preventive interventions on the onset of tobacco smoking as assessed in early adolescence. The classroom-centered (CC) intervention was designed to reduce the risk for tobacco smoking by enhancing teachers' behavior management skills in first grade and, thereby, reducing child attention problems and aggressive and shy behavior-known risk behaviors for later substance use. The family-school partnership (FSP) intervention targeted these early risk behaviors via improvements in parent-teacher communication and parents' child behavior management strategies. A cohort of 678 urban, predominately African-American, public school students were randomly assigned to one of three Grade 1 classrooms at entrance to primary school (age 6). One classroom featured the CC intervention, a second the FSP intervention, and the third served as a control classroom. Six years later, 81% of the students completed audio computer-assisted self-interviews. Relative to controls, a modest attenuation in the risk of smoking initiation was found for students who had been assigned to either the CC or FSP intervention classrooms (26% versus 33%) (adjusted relative risk for CC/control contrast=0.57, 95% confidence interval (CI), 0.34-0.96; adjusted relative risk for FSP/control contrast=0.69, 95% CI, 0.50-0.97). Results lend support to targeting the early antecedent risk behaviors for tobacco smoking. Each day more than 2000 youth under age 18 become daily smokers and the age of tobacco initiation has been going down. Health care settings can partner with families to encourage parent-child interactions that prevent youth tobacco use. This study evaluates a smoking prevention intervention package for parents and children (aged 10-12) provided through their managed care organization.
                A two-arm (usual care vs intervention) randomized trial was employed. The intervention included a mailed parental smoking prevention kit, outreach follow-up telephone calls to the parent by a health educator, child materials, medical record cues for physicians to deliver prevention messages, and parent newsletter. Outcome measures were susceptibility to smoking, experimentation with smoking, and smoking in the past 30 days as assessed by 20-month follow-up surveys of children.
                A total of 4,026 families enrolled in the study. The response rate to the 20-month follow-up was 88%. There were no significant effects of the intervention on any of the primary outcomes. The intervention was associated with modest but statistically significant increases in parent-child discussions of smoking related topics.
                A minimal-intensity family-based prevention program did not significantly reduce rates of susceptibility or tobacco use among youth aged 10-12 at baseline and 11 to 14 at follow-up. Development and evaluation of innovative approaches to tobacco use prevention must continue, despite our disappointing results. Parents and health care systems are too important to abandon as channels for prevention messages. The study tested alternative intervention strategies to reduce escalation in problem behaviors among high-risk young adolescents (11 to 14 years old). A total of 158 families with young adolescents (male and female) participated in this study. Of these, 119 families were randomly assigned to 1 of the following intervention conditions: (a) parent focus, (b) teen focus, (c) parent and teen focus, (d) self-directed change (materials only). In addition, 39 families of young adolescents were recruited as a quasi-experimental control. Parent focus and teen focus interventions resulted in immediate beneficial effects in observed and reported family conflict. The parent intervention conditions showed immediate beneficial effects on behavior problems at school. Longitudinal trends suggest that the parent focus condition may reduce subsequent tobacco use, compared with all other approaches. Interventions that aggregated high-risk youths into groups, however, showed the highest escalations in tobacco use and problem behavior at school, beginning at termination and persisting to follow-up. These findings are discussed with respect to the need to re-evaluate strategies that aggregate high-risk youths into intervention programs and focus more on strategies to engage parents in prevention.
Some well-executed RCTs show family interventions may prevent adolescent smoking, but RCTs which were less well executed had mostly neutral or negative results. There is thus a need for well-designed and executed RCTs in this area.