Table 1 Descriptive characteristics of a sample of young South Korean adults aged 20 to 39 years --2010–12 Korea National Health and Nutrition Examination Survey (KNHANES) (N = 6055)
|  | Total (Mean ± SD) (N = 6055) | Men (Mean ± SD) (n = 2572) | Women (Mean ± SD) (n = 3483) |
|---|---|---|---|
Age (years) | 30.06 ± 5.5 | 29.93 ± 5.5 | 30.21 ± 5.5 |
Body mass index (kg/m2) | 23.17 ± 3.7 | 24.20 ± 3.6 | 21.99 ± 3.5 |
| Â | Total (%) | Men (%) | Women (%) |
Education | |||
  ≥ Post-sec graduate | 47.9 | 50.3 | 45.1 |
Household incomea | |||
 Quartile 1 | 8.3 | 8.9 | 7.6 |
 Quartile 2 | 27.7 | 27.1 | 28.3 |
 Quartile 3 | 35.0 | 35.5 | 34.3 |
 Quartile 4 | 29.1 | 28.4 | 29.7 |
Marital status | |||
 Never married | 49.9 | 56.5 | 42.2 |
 Married living with spouse | 48.3 | 42.5 | 55.0 |
 Previously marriedb | 1.8 | 1.0 | 2.8 |
Employment status (unemployed)c | 34.1 | 22.2 | 47.5 |
Area of residenced | |||
 Metro Seoul | 29.5 | 28.5 | 30.7 |
 Non-Metro Seoul | 70.5 | 71.5 | 69.3 |
Self-rated health | |||
 Healthy | 42.7 | 47.0 | 37.7 |
 Neutral | 48.4 | 45.1 | 52.1 |
 Not healthy | 8.9 | 7.9 | 10.2 |
Currently smoking | 32.3 | 52.9 | 8.9 |
High-risk drinkinge | 16.9 | 23.0 | 10.0 |
Physical activity | |||
 Vigorous-intensity ≥ 20 min/session, ≥ 3 day/week | 15.5 | 19.5 | 11.0 |
 Moderate-intensity ≥ 30 min/session, ≥ 5 day/week | 9.5 | 11.7 | 6.9 |
 Walking ≥ 30 min/session, ≥ 5 day/week | 43.5 | 47.0 | 39.4 |
 Muscular strengthening ≥ 2 day/week | 22.5 | 32.3 | 11.2 |
Body Mass Index (kg/m2) | |||
 Underweight < 18.5 | 7.5 | 2.9 | 12.7 |
 Normal 18.5–22.9 | 39.3 | 30.5 | 49.2 |
 Overweight 23–24.9 | 26.2 | 30.6 | 21.0 |
 Obese ≥ 25 | 27.1 | 35.9 | 17.1 |
Body weight perception | |||
 Under-perception | 43.3 | 66.9 | 16.3 |
 Accurate-perception | 48.9 | 32.2 | 68.0 |
 Over-perception | 7.7 | 0.8 | 15.6 |
Psychological distress | |||
 Stressed | 30.9 | 27.8 | 34.4 |
 Depressed | 9.5 | 6.8 | 12.7 |
 Suicidal ideation | 10.9 | 6.5 | 16.0 |