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Table 1 Sample characteristics by age group from 2017 Korean Community Health Survey

From: Body mass index, subjective body shape, and suicidal ideation among community-dwelling Korean adults

Variables M(SD)/W% P-value
All (N = 222,037) Young adults (N = 99,831) Middle-aged adults (N = 84,913) Older adults (N = 37,293)
Suicidal ideation (yes) 6.8% 5.3% 6.7% 11.0% ***
BMI (kg/m2) 23.4 (3.3) 23.1 (3.7) 23.7 (2.9) 23.3 (3.0) ***
Body shape discordance      ***
 Underweight-skinny 3.7% 5.0% 1.8% 4.3%  
 Underweight-normal/fat 1.2% 2.0% 0.4% 0.7%  
 Healthyweight-skinny 12.2% 10.9% 11.0% 18.6%  
 Healthyweight-normal (ref.) 38.8% 37.6% 39.9% 39.7%  
 Healthyweight-fat 16.5% 17.8% 17.5% 10.6%  
 Overweight-skinny/normal 4.7% 3.0% 5.3% 7.5%  
 Overweight-fat 22.9% 23.6% 24.0% 18.7%  
Sex (female) 49.9% 48.0% 50.0% 54.3% ***
Education      ***
 Less than elementary school graduate 12.3% 0.2% 8.9% 52.0%  
 Middle school graduate 8.4% 1.2% 12.9% 17.2%  
 High school graduate 37.6% 39.4% 43.0% 20.3%  
 College and more (ref.) 41.8% 59.2% 35.2% 10.5%  
Monthly household income      ***
 < $1000 10.3% 3.2% 6.4% 38.2%  
 < $2000 12.1% 7.7% 12.0% 24.4%  
 < $3000 17.1% 18.1% 16.9% 15.3%  
 < $4000 18.0% 21.5% 18.0% 8.8%  
 < $5000 15.2% 18.2% 16.1% 5.1%  
 < $6000 10.1% 12.1% 10.9% 2.9%  
 ≥ $6000 (ref.) 17.1% 19.2% 19.8% 5.4%  
Living alone (yes) 10.0% 8.1% 8.1% 19.0% ***
Economic activity (yes) 65.1% 69.8% 75.0% 29.7% ***
Self-rated health (fair/poor) 14.4% 5.3% 13.8% 39.8% ***
Depression (0–27) 2.1 (0.0) 2.1 (0.0) 1.8 (0.0) 2.7 (0.0) ***
Current drinking status (yes) 76.1% 87.0% 76.1% 46.6% ***
Current smoking status (yes) 20.4% 23.8% 21.3% 9.3% ***
Weight control practice (yes) 68.3% 75.5% 68.7% 48.0% ***
Physical activity (yes) 22.4% 23.4% 23.5% 17.1% ***
  1. M Mean, SD Standard Deviation, W% Weighted %, p-value ANOVA or x2 test
  2. *** P < .001