Evidence Rating: Promising | More than one study
Date:
A national smoking prevention campaign that uses advertisements with anti-tobacco messages targeted at youths ages 12 to 17 who are most at risk of smoking. The program is rated Promising. The evaluation found a reduction in smoking prevalence and a decreased risk of smoking initiation among youth.
A Promising rating implies that implementing the program may result in the intended outcome(s).
Program Goals, Target Population, and Program Components
The truth® campaign is a national smoking prevention campaign that uses advertisements with anti-tobacco messages targeted at youths ages 12 to 17 who are most at risk of smoking. Young adults ages 18 to 24 are an important secondary audience. The truth® campaign is based on the tobacco-prevention program launched by the Florida Department of Health in 1998. The Florida program known as “truth” includes television advertisements that deglamorized smoking and portrayed youths confronting the tobacco industry. The marketing portion of the campaign was developed by a team of advertising and public relations firms but was driven by grassroots advocacy. The theory behind the campaign is that “truth” will change youths’ attitudes toward smoking, and that, in turn, will change their smoking behaviors, prevent them from initiating smoking, or both.
Program Theory
The truth® campaign was launched nationally in 2000. It is run by the American Legacy Foundation, which was founded under the terms of the Master Settlement Agreement between the U.S. tobacco companies and 46 U.S. states and 5 territories. The core strategy of the campaign is to market its message as a brand, like other youth brands (e.g., Nike®, Sprite®) to appeal to youths most at risk of smoking. The TV and print commercials feature “edgy” youths (i.e., those who are on the cutting edge of trends), promotional items (T-shirts, stickers), street marketing, and a Web site. Although “truth” is a national multiethnic campaign, special components were developed to reinforce its appeal to African Americans, Hispanics, and Asians.
The objective of the campaign is to allow youths to make informed choices about tobacco use by giving them facts about the tobacco industry and its products. The messages of the truth® campaign focus on smoking addiction, death and disease attributed to smoking, ingredients in cigarettes, and the social consequences of smoking. They feature historical statements from the tobacco industry’s dubious marketing tactics and its efforts to obscure the health effects of tobacco. Rather than use obvious and directive messages that tell teens not to smoke, campaign advertisements use graphic images that depict stark facts about the consequences caused by tobacco use. For example, a well-known commercial titled “Body Bags” showed youths piling 1,200 body bags outside the headquarters of a major tobacco company to illustrate the daily death toll from tobacco use.
Users should interpret these outcomes with some caution based on the methodological limitations to the studies’ designs (for an explanation of the limitations, please see the Evaluation Methodology section).
Study 1
Smoking Prevalence
The descriptive data from the Monitoring the Future surveys showed a large decline in current youth smoking prevalence overall and for each grade between 1997 and 2002 in the Farrelly and colleagues’ 2005 study. Among all grades combined, the current smoking prevalence decreased by 36 percent. Eighth grade students exhibited the largest percentage decline at 45 percent, whereas 12th grade students showed the smallest decline at 27 percent. The annual decline of smoking prevalence for all grades was significantly greater in the post–truth® campaign time period (2000–02) than the pre–truth® campaign time period (1997–99), with a 3.2 percent decline before the campaign launched compared with a 6.8 percent decline after the campaign launched. The results showed a statistically significant dose–response relationship, meaning that youths with greater exposure to the truth® campaign were less likely to be current smokers (odds ratio = 0.78, p<.05). The dose–response relationship was significant even when controlling for potentially confounding variables, such as median household income and the percentage of the population who were college graduates. The results also showed the increasing effects of the relationship between overall youth smoking prevalence and the campaign as it strengthened over time. For instance, in 2000, a few months after the campaign launch, the truth® campaign showed little effect. But by 2001 the effect of the campaign on youth smoking prevalence was statistically significant (odds ratio = 0.66, p<.05). The results also showed that the prevalence of smoking among students in all grades combined would have declined by only 5.7 percentage points to 19.6 percent instead of the actual decline of 7.3 percentage points to 18.0 percent had the campaign not existed. Therefore, about 22 percent of the total decline in youth smoking prevalence between 1999 and 2002 is attributable to the truth® campaign. By 2002, smoking rates overall were 1.5 percentage points lower than they would have been in the absence of the campaign, which translates to roughly 300,000 fewer youth smokers (based on 2002 U.S. Census population statistics).
Study 2
Smoking Initiation
The outcome results of Farrelly and colleagues (2009) showed that exposure to the truth® campaign is associated with a decreased risk of smoking initiation. An increase in cumulative campaign exposure of 10,000 GRPs is associated with a 20 percent decrease in the risk of initiation (relative risk=0.80, p=0.001). As part of the analysis, the authors calculated the proportion of the sample who had initiated smoking by age and the estimated proportion of the sample who would have initiated smoking in the absence of the truth® campaign. The difference between the two proportions represents the difference attributable to the truth® campaign. For example, 6.8 percent of 20-year-olds initiated smoking (among those who had not previously initiated). The analysis found that in the absence of the truth® campaign, this percentage would have been higher—at 8.5 percent. The difference translates to roughly 73,000 fewer adolescents initiating smoking nationwide. This amounts to approximately 456,281 fewer smokers attributable to the truth® campaign from 2000 through 2004. Several other factors were associated with a decreased risk of smoking initiation, including high school graduation, African American race, Hispanic ethnicity, and living with both parents at baseline. Factors associated with an increased risk of smoking initiation included ever being suspended from school at baseline, baseline income, and highest parental education of college graduate.
Study
A second study by Farrelly and colleagues (2009) used a similar quasi-experimental design to relate changes in smoking initiation to levels of exposure to the truth? campaign over time and across media markets in the United States using longitudinal data. The study analyzed data from the National Longitudinal Survey of Youth 1997 (NLSY97). The NLSY97 is designed to provide information about youths? transition from school to the labor market and into adulthood. Members of the longitudinal cohort were interviewed annually beginning in 1997 and were ages 15?20 when the truth? campaign began in 2000. Data from Rounds 1?8 (1997?2004) were used in the analyses. The baseline sample included a national representative sample of 8,904 adolescents between the ages of 12 and 17 years during the initial survey round in January 1997.
The outcome measure included the age of initiation of trying smoking based on three questions from the NLSY97. All youths were asked: have you ever smoked a cigarette? If youths answered ?yes,? they were asked a follow-up question to determine the age of initiation: how old were you when you smoked your first cigarette? For subsequent surveys, youths were asked: have you smoked a cigarette since the last interview? If youths answered ?yes? to this question, the age of initiation was based on their age at the time of the survey.
The authors again used gross rating points (GRPs) to quantify the reach and frequency of exposure to the campaign on television. The cumulative sum of exposure (the GRPs) was calculated for each study participant for each wave of the survey, based on the participant?s media market of residence each year. For example, if a market received 1,000 GRPs per year, cumulative exposure would be 5,000 GRPs by 2004 for a cohort member who lived in this market for all years since the campaign launch in 2000. The precampaign period before February 2000 (1997?99) was set to zero (GRP=0).
Several confounding variables were controlled for in the study, including individual/family confounders (race/ethnicity, gender, total individual income, living with both parents, ever being suspended from school, etc.), market-level characteristics (average disposable family income, average high school completion rates, and percentage of population living in rural areas), and time-varying confounders (such as cumulative GRPs, annual inflation-adjusted per capita state-level funding for tobacco control programs, and state cigarette prices). The study used discrete-time survival analysis to assess the influence of the truth campaign on smoking initiation. The process allowed for the calculation of the probability that an individual will initiate smoking for each age represented in the sample, given that he or she had not previously begun smoking.
Study
The Farrelly and colleagues 2005 study used a pre?post quasi-experimental design that relates changes in youth smoking prevalence to varied exposure to the truth? campaign over time and across media markets in the United States. The study used media delivery data as well as data from the Monitoring the Future (MTF) surveys during 1997?2002. The MTF survey is given annually in the spring to a nationally representative sample of roughly 50,000 8th, 10th, and 12th grade students and asks questions designed to monitor alcohol, tobacco, and illicit drug use among youths.
The study outcome was a dichotomous variable for reporting any quantity of smoking in the past 30 days, based on the following question from the MTF survey: how frequently have you smoked cigarettes in the past 30 days? The variable was coded as zero for students who answered ?none per day,? and was coded as 1 for students who answered ?less than 1 cigarette,? ?1 to 5 cigarettes,? ?about ? pack,? ?about 1 pack,? ?about 1? packs,? or ?2 packs or more per day.? The years 1997?99 represented a precampaign study period. The years 2000?02 represented the years the campaign was launched nationally, although the dose of campaign messages varied considerably across media markets and over time.
Student?s exposure to the truth? campaign was measured by cumulative gross rating points (GRPs) in each of the 210 television markets in the United States. GRPs measure the total volume of delivery of a media campaign to a target audience. They are equal to the percentage of the target audience that is reached by the campaign times the frequency of exposure. Student?s exposure was defined as the cumulative number of truth? campaign GRPs that were delivered in a school?s media market from the beginning of the campaign in February 2000 to the time of the MTF survey in the springs of 2000, 2001, and 2002. Students from 1997?99 served as a historical unexposed comparison group (GRP=0).
Potential confounding variables were controlled for, including individual-level variables (grade, race/ethnicity, gender, parental education), media market-level variables (median household income, percentage of the population who were college graduates, population size), and state-level variables (inflation-adjusted cigarette prices, investments in tobacco control programs). The study used population average logistic regression models to estimate current youth smoking prevalence as a function of individual-, media market?, and state-level influences. Regressions were estimated by combining the cross-sectional MTF surveys from 1997 through 2002 to relate the odds that an individual smoked to the media market dose of the campaign, measured at the time of the survey.
Because of the nature of the intervention (a national tobacco awareness campaign), there are some limitations to the evaluations of the truth® campaign. The delivery of the program to youths nationwide through various national advertising media campaigns creates certain methodological difficulties for researchers trying to isolate the effect of the program from the effect of other factors that may have influenced adolescent tobacco use (such as school-based prevention programs or local laws passed to reduce selling of tobacco products to youth). Although there are methodological reservations in this regard, the studies included in the program’s evidence base made suitable efforts to minimize these limitations. The quasi-experimental design and sampling strategies were determined to meet the standards for inclusion on CrimeSolutions. However, users should still interpret the outcomes with some caution.
These sources were used in the development of the program profile:
Study
Farrelly, Matthew C., James Nonnemaker, Kevin C. Davis, and Altijani Hussin. 2009. “The Influence of the National truth® Campaign on Smoking Initiation.” American Journal of Preventive Medicine 36(5):379–84.
Farrelly, Matthew C., Kevin C. Davis, M. Lyndon Haviland, Peter Messeri, and Cheryl G. Healton. 2005. “Evidence of a Dose–Response Relationship Between ‘truth’ Antismoking Ads and Youth Smoking Prevalence.” American Journal of Public Health 95(3):425–31.
These sources were used in the development of the program profile:
Age: 12 - 17
Gender: Male, Female
Race/Ethnicity: White, Black, Hispanic, American Indians/Alaska Native, Asian/Pacific Islander, Other
Geography: Suburban Urban Tribal Rural
Setting (Delivery): Other Community Setting
Program Type: Alcohol and Drug Prevention, Community Awareness/Mobilization
Current Program Status: Active
1724 Massachusetts Avenue NW
American Legacy Foundation
DC 20036
United States