Background. Most adult smokers report trying their first cigarette before age 18 years.
Understanding the impact of smoking initiation at young ages may help public health policy …

Objectives Evidence suggests that age at smoking initiation has implications for tobacco
use, nicotine dependence, and resulting long-term health and chronic disease outcomes …

Purpose To describe the incidence and identify predictors of smoking initiation in young
adults. Methods Data were collected in self-report questionnaires in 22 cycles over 13 years …

Objectives. Our study presents national estimates of the proportion of youths in each of 7
stages of smoking and investigates the associations between risk/protective factors and …

PURPOSE: To examine the extent to which young adults initiate smoking between the ages
of 18 and 21 years; to characterize the frequency and quantity of use among initiators; and to …

Objectives Evidence that age of smoking initiation represents a risk factor for regular
smoking in adolescence is complicated by inconsistencies in the operational definition of …

Purpose: To identify predictors of smoking onset and cessation between early (age 13
years) and late adolescence (age 18 years) and between late adolescence (age 18 years) …

The continuum of smoking behavior among children and adolescents can be described in
stages of preparation, trying, experimentation, regular smoking, and nicotine dependence or …

PURPOSE: To identify predictors of the transition from experimentation to regular smoking in
middle adolescence, late adolescence, and young adulthood. METHODS: California and …

Objectives. The predictive value of perceptions of smoking-related risks and benefits with
regard to adolescent smoking initiation has not been adequately established. We used …