Pattern of 9th- and 10th-grade new smoker trends: 1991-2011
Purpose: This study aimed to explore the trends of new smokers in the 9th and 10th grade-cohorts separately.
Significance: This is the first study that analyzed adolescents smoking behavior from the perspective of a grade cohort.
Methodology: Based on nationally representative YRBS data, 9th grader's ever smoking prevalence rate is ecologically comparable to 11th grader's rate for 2 subsequent years. The 2-year incidence rate of cigarette smoking among 9th graders to their prospective 11th grade was calculated by subtracting 9th grader's ever smoking rate from the 11th grader's. The 10th grade-cohort was defined in the corresponding manner.
Findings/Results: Instead of looking at one same grade level across the survey years, this study examined the smoking prevalence rates as the grade-cohorts progressed in school. The results showed that the vast majority of grade-cohort ever smoking trends ascended in both sexes separately and combined. In view of new smoker prevalence 1991-2011 trends with or without gender stratification, a two-peak distribution was identified. The lowest new smoker prevalence was found in the 1999 cohorts. The 2-year new smoker prevalence rates went up gradually and reached a peak in 2009.
Conclusions/Recommendations: This study showed an alarmingly ascending national new smoker trends among adolescents. Hence, cohort-specific tobacco prevention and control strategies are suggested.
Public health or related education
Public health or related research
Social and behavioral sciences
Identify the pros and cons of using grade-cohort trend analysis. Describe the 1991-2009 grade-cohort new smoker trends. Compare the grade cohort trends of new smokers between genders.
Keyword(s): Adolescent Health, Tobacco
Qualified on the content I am responsible for because: I am a certified health education specialist. I conducted this study.
Any relevant financial relationships? No
I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.