The Effect of Working for Pay on Adolescent Tobacco Use
Rajeev Ramchand, PhD,
Nicholas S. Ialongo, PhD and
Howard D. Chilcoat, ScD
At the time of the study, Rajeev Ramchand, Nicholas S. Ialongo, and Howard D. Chilcoat were with the Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, Md.
FIGURE 1——Kaplan–Meier failure estimates of age of first use of tobacco, by year-10 work intensity: Prevention and Intervention Research Center Study, Baltimore, Md, 1993–2004