Table 1 Baseline characteristics of 100 participants
Age | 56.4 ± 8.3 [range: 40, 69] |
Male:Female | 59:41 |
Region, n | |
 Gangwon | 20 |
 Gyeonggi/Incheon | 14 |
 Gyeongsang | 36 |
 Busan/Daegu | 30 |
Education level, n | |
 less than middle school | 25 |
 High school graduate | 42 |
 College graduation or higher | 33 |
Income, KRW/mo, n | |
  < 1.5 million | 25 |
 1.5–3 million | 27 |
 3–6 million | 32 |
  > 6 million | 11 |
Smoke, n | |
 Never | 59 |
 Ex-smoker (> 20pk) | 19 |
 Current-smoker (> 20pk) | 22 |
Drink, n | |
 Never | 50 |
 Ex-drinker | 4 |
 Current-drinker | 46 |
Regular moderate-intensity exercise, n | |
 No | 39 |
 Yes | 61 |