Summary statistics*
| Total | Smoker | Non-smoker | |
|---|---|---|---|
| Dummy variable for smoking | 0.276 (0.446) | 1 (0) | 0 (0) |
| Age (years) | 44.504 (15.916) | 41.378 (14.114) | 45.611 (16.337) |
| Monthly household total income (million won, nominal income) | 331.743 (715.431) | 311.253 (729.345) | 339.523 (729.345) |
| Male | 0.488 (0.500) | 0.88 (0.326) | 0.339 (0.473) |
| Female | 0.512 (0.500) | 0.12 (0.326) | 0.661 (0.473) |
| Rural area | 0.196 (0.397) | 0.196 (0.397) | 0.196 (0.397) |
| Marital status | |||
| Married | 0.689 (0.463) | 0.654 (0.476) | 0.704 (0.457) |
| Never-married | 0.206 (0.404) | 0.268 (0.443) | 0.182 (0.386) |
| Divorced | 0.027 (0.163) | 0.041 (0.199) | 0.022 (0.147) |
| Widowed | 0.072 (0.259) | 0.029 (0.168) | 0.088 (0.283) |
| Highest level of education | |||
| Elementary school | 0.200 (0.400) | 0.131 (0.338) | 0.226 (0.418) |
| Middle school | 0.106 (0.307) | 0.109 (0.311) | 0.104 (0.306) |
| High school | 0.393 (0.489) | 0.452 (0.498) | 0.371 (0.483) |
| College | 0.301 (0.459) | 0.308 (0.462) | 0.299 (0.458) |
| Occupational category | |||
| Professionals, managers | 0.126 (0.331) | 0.136 (0.343) | 0.122 (0.327) |
| White-collar | 0.088 (0.283) | 0.098 (0.298) | 0.084 (0.278) |
| Service and sales | 0.145 (0.352) | 0.171 (0.377) | 0.135 (0.342) |
| Agriculture and fisheries | 0.056 (0.230) | 0.055 (0.227) | 0.056 (0.231) |
| Construction | 0.200 (0.400) | 0.31 (0.462) | 0.158 (0.365) |
| Not holding a job | 0.385 (0.487) | 0.229 (0.42) | 0.444 (0.497) |
| Consumption of cigarettes (number of cigarettes per day) | 4.444 (8.422) | 15.551 (8.617) | 0 (0.000) |
| Duration of smoking (years) | 10.363 (13.708) | 20.997 (12.942) | 0 (0.000) |
| Price (real price, per pack of 20 cigarettes) | 2436.924 (300.593) | 2423.695 (309.293) | 2441.954 (298.593) |
| N | 54 167 | 14 071 | 40 096 |
*The means are weighted averages using the time-series sample weights that are provided by the survey.