Table 2

Price elasticities (95% CI) of smoking prevalence and smoking intensity by income group, Korea

Smoking prevalenceSmoking intensity
Elasticity95% CIElasticity95% CI
Overall−0.442(−0.494 to −0.396)−0.241(−0.282 to −0.199)
Income Q1 (lowest)−0.471(−0.592 to −0.361)−0.225(−0.311 to −0.137)
Income Q2−0.420(−0.582 to −0.270)−0.120(−0.243 to −0.016)
Income Q3−0.371(−0.526 to −0.213)−0.276(−0.429 to −0.128)
Income Q4−0.300(−0.472 to −0.146)−0.109(−0.249 to 0.014)
Income Q5 (highest)−0.318(−0.470 to −0.172)−0.281(−0.427 to −0.144)
  • The price elasticity of −0.442 indicates that a 10% increase in tobacco price would lead to a 4.42% reduction in current smoking prevalence. The price elasticity of −0.241 indicates that a 10% increase in tobacco price would lead to 2.41 cigarettes/day reduction in amount of smoking intensity by current smokers. The 95% CI for price elasticity represents the 95% bootstrap CI estimated by the 2.5th and 97.5th percentiles of the each price elasticity distribution of smoking prevalence and smoking intensity calculated from 1000 bootstrap samples drawn from the Korea National Health and Nutrition Examination Survey.