Table 2.
Characteristics of the study participants: adults aged ≥20 years, Korea National Health and Nutrition Examination Survey, 2008–2011
| Total (n 17 338) | ||
|---|---|---|
| Variable | n or Mean | % or sd |
| Obesity prevalence by EOSS†, n and % | ||
| Obese | 5762 | 33·23 |
| Non-obese | 11 576 | 66·77 |
| Obesity prevalence by BMI‡, n and % | ||
| Obese | 636 | 3·67 |
| Non-obese | 16 702 | 96·33 |
| Obesity prevalence by WC§, n and % | ||
| Obese | 4553 | 26·26 |
| Non-obese | 12 785 | 73·74 |
| Obesity prevalence by WHtR║, n and % | ||
| Obese | 7508 | 43·30 |
| Non-obese | 9830 | 56·70 |
| Obesity prevalence by %BF¶, n and % | ||
| Obese | 8028 | 46·30 |
| Non-obese | 9310 | 53·70 |
| Sex, n and % | ||
| Male | 7472 | 43·10 |
| Female | 9866 | 56·90 |
| Age (years), mean and sd | 49·315 | 15·880 |
| Age group, n and % | ||
| 20–29 years old | 2055 | 11·85 |
| 30–39 years old | 3466 | 19·99 |
| 40–49 years old | 3455 | 19·93 |
| 50–59 years old | 3230 | 18·63 |
| 60–69 years old | 2901 | 16·73 |
| 70–79 years old | 1916 | 11·05 |
| 80 years or older | 315 | 1·82 |
| Marital status, n and % | ||
| Married | 15 063 | 86·88 |
| Single | 2275 | 13·12 |
| Residential area††, n and % | ||
| Large city | 7934 | 45·76 |
| Small city | 5746 | 33·14 |
| Rural | 3658 | 21·10 |
| Education level, n and % | ||
| College diploma or higher qualification | 4903 | 28·28 |
| High-school diploma | 5829 | 33·62 |
| No high-school diploma | 6606 | 38·10 |
| Number of household members, mean and sd | 3·292 | 1·334 |
| Monthly household income‡‡ (unit: 10 000 won), mean and sd | 108·583 | 38·031 |
| Occupation§§ | ||
| White-collar worker | 5678 | 32·75 |
| Blue-collar worker | 4887 | 28·19 |
| Non-employed | 6773 | 39·06 |
| Current smoking status║║ | ||
| Yes | 5689 | 32·81 |
| No | 11 649 | 67·19 |
| Excessive alcohol consumption¶¶ | ||
| Yes | 3810 | 21·97 |
| No | 13 528 | 78·03 |
| Year | ||
| 2011 | 2192 | 12·64 |
| 2010 | 5308 | 30·61 |
| 2009 | 6609 | 38·12 |
| 2008 | 3229 | 18·62 |
EOSS, Edmonton Obesity Staging System; WC, waist circumference; WHtR, waist-to-height ratio; %BF, percentage of body fat.
Obesity is determined if individuals belong to the EOSS stage 2 or higher.
Obesity is determined if BMI≥30 0 kg/m2.
Obesity is considered to exist when WC is >90 and >85 cm for men and women, respectively.
Obesity is considered to exist when WHtR is >0·53 and >0·49 for men and women, respectively.
Obesity is considered to exist when %BF is >25 and >32 % for men and women, respectively.
Large city=business or financial hub; small city=metropolitan city, rural area=county/town.
Monthly household income calculated by dividing total household income by the number of family members in the household (unit: 10000 won).
Those with no occupation=those who responded that they do not have job, including housewives and students. Blue-collar workers=skilled workers in the agriculture, forestry and fisheries industries, workers employed in device and machine manipulation and assembly, and manual workers. White-collar workers=managers, professionals, office workers, and service and sales staff.
Smoking=those who smoke currently; non-smokers=those who do not smoke currently.
Excessive drinking=those who responded that they drink more than five times per week.