Youth employment, income, and smoking initiation: results from Korean panel data
Young Kyung Do1, Eric Andrew Finkelstein
1Program in Health Services and Systems Research, Duke-NUS Graduate Medical School Singapore, Singapore. young.do@duke-nus.edu.sg
Purpose:
To estimate the effect of youth employment and income on smoking initiation, this study tests whether youth with higher incomes from either employment or allowance are more likely to smoke, and, if so, whether it is the employment effect or the income effect that affects youth smoking initiation.
Methods:
Data from the 2003-2007 Korea Youth Panel Study were used to estimate the effect of youth employment and income on smoking initiation. A fixed-effects linear probability model was estimated to control for unobserved individual heterogeneity, which may affect both youth employment/income and smoking initiation.
Results:
Even after controlling for unobserved individual heterogeneity, youth employment raised the probability of smoking initiation by 4.4% points, but neither employment income nor allowance was significantly associated with youth smoking initiation.
Conclusions:
Youth employment is an important risk factor for smoking initiation in South Korea, suggesting that workplaces that hire youth may be an appropriate target for antismoking interventions.
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Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and case-control studies.

