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Full-Text Articles in Medicine and Health Sciences

Perceived Accessibility As A Predictor Of Youth Smoking, Chyke Doubeni, Wenjun Li, Hassan Fouayzi, Joseph Difranza Jan 2012

Perceived Accessibility As A Predictor Of Youth Smoking, Chyke Doubeni, Wenjun Li, Hassan Fouayzi, Joseph Difranza

Chyke A. Doubeni

PURPOSE: Youths who smoke are more likely to perceive that cigarettes are easily accessible, but the relationship between perceived accessibility of cigarettes and the risk of smoking is not clear. The objective of this study was to determine whether perceived accessibility predicted future smoking among youths. METHODS: This study used data from the second Development and Assessment of Nicotine Dependence in Youth (DANDY-2) study, a 4-year (2002-2006) cohort study that began with 1,246 sixth-grade students in 6 Massachusetts communities. DANDY-2 comprised 11 waves of in-person interviews. A total of 1,195 students who were aged 11 to 14 years at the …


Perceived Accessibility Of Cigarettes Among Youth: A Prospective Cohort Study, Chyke Doubeni, Wenjun Li, Hassan Fouayzi, Joseph Difranza Jan 2012

Perceived Accessibility Of Cigarettes Among Youth: A Prospective Cohort Study, Chyke Doubeni, Wenjun Li, Hassan Fouayzi, Joseph Difranza

Chyke A. Doubeni

BACKGROUND: The accessibility of tobacco for youth is difficult to measure, partly because of the varied sources of cigarettes. Perceptions about the accessibility of cigarettes assesses availability from all potential sources and has been found to predict future smoking. This study examines the determinants of perceived accessibility from the perspective of a longitudinal study. METHODS: Data were derived from the second Development and Assessment of Nicotine Dependence in Youth study, a 4-year longitudinal study of 1246 sixth-grade students who underwent up to 11 in-person interviews from 2002 to 2006. Perceived accessibility was assessed prospectively by asking students whether they agreed …


Early Course Of Nicotine Dependence In Adolescent Smokers, Chyke Doubeni, George Reed, Joseph Difranza Jan 2012

Early Course Of Nicotine Dependence In Adolescent Smokers, Chyke Doubeni, George Reed, Joseph Difranza

Chyke A. Doubeni

OBJECTIVE: The goal was to characterize the early course of nicotine dependence. METHODS: Data were collected from 1246 sixth-graders in a 4-year (2002-2006) prospective study using 11 individual interviews. Subjects were monitored for 10 symptoms of dependence by using the Hooked on Nicotine Checklist. The bidirectional prospective relationship between the intensity of dependence (number of symptoms) and smoking frequency was examined by using cross-lagged analyses. RESULTS: Of the 370 subjects who had inhaled from a cigarette, 62% smoked at least once per month, 53% experienced dependence symptoms, and 40% experienced escalation to daily smoking. Smoking frequency predicted the number of …