Table 2.
Summary of simulating cohort in Korea, Singapore, and the United States
| Korea | United States | Singapore | |
|---|---|---|---|
| Percentage of current smokers in initial cohort | 27.9 | 29.5 | 9.78 |
| Mean cumulative pack‐years of light smokersa (30th percentile smokers) | 9.90 (4.01) | 20.6 (5.07) | 5.83 (4.03) |
| Mean cumulative pack‐years of heavy smokersb (70th percentile smokers) | 39.9 (16.2) | 35.3 (5.16) | 43.1 (15.9) |
Light smokers were defined as having less than the 30th percentile of cumulative pack‐years at age 50 for each country. Mean cumulative pack‐years for male light smokers in Korea, the United States, and Singapore were 9.9, 20.6, and 5.8 pack‐years, respectively. Pack‐years are defined as the cumulative number of packs of cigarettes a person self‐reports as having smoked up to age 50, expressed as the equivalent number of packs per day for a single year.
Heavy smokers were defined as having greater than the 70th percentile of cumulative pack‐years at age 50 for each country. Mean cumulative pack‐years for male heavy smokers in Korea, the United States, and Singapore were 39.9, 35.3, and 43.1 pack‐years, respectively.