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Table 1 Sociodemographic characteristics of 72,435 adolescents with and without atopic dermatitis, the Ninth Korean Youth Risk Behavior Survey (2013), N (%)

From: Association of atopic dermatitis with depressive symptoms and suicidal behaviors among adolescents in Korea: the 2013 Korean Youth Risk Behavior Survey

Variables Adolescents without atopic dermatitis Adolescents with atopic dermatitis P-value
Sex
 Male 34,555 (52.9) 2,100 (44.5) <0.001
 Female 32,976 (47.1) 2,804 (55.5)
Age
 12–14 years (Middle school) 34,021 (48.7) 2,509 (49.7) 0.101
 15–17 years (High school) 33,510 (51.3) 2,395 (50.3)
Residencea
 Rural area 8,328 (6.9) 530 (6.2) 0.002
 Urban area 59,203 (93.1) 4,374 (93.8)
Family affluenceb
 Low 8,021 (11.4) 529 (10.4) <0.001
 Middle 35,285 (52.8) 2,482 (50.0)
 High 24,234 (36.8) 1,893 (39.6)
Father’s educational attainment
 <High school graduation 2,581 (3.8) 170 (3.5) 0.009
 High school graduation 22,283 (33.0) 1,652 (33.7)
 > College graduation 29,173 (43.2) 2,189 (44.6)
 Missinge 13,494 (20.0) 893 (18.2)
Mother’s educational attainment
 < High school graduation 2,396 (3.6) 174 (3.6) <0.001
 High school graduation 28,020 (41.2) 2,110 (43.0)
 > College graduation 23,981 (35.5) 1,794 (36.6)
 Missinge 13,134 (19.5) 826 (16.8)
Participation in physical activityc
 Do not 16,050 (23.8) 1,143 (23.2) 0.465
 Do ≥ 1 per week 51,481 (76.2) 3,761 (76.8)
Cigarette smoking
 Non-smoker 60,934 (90.3) 4,407 (89.6) 0.151
 <10 /day 5,296 (7.8) 383 (8.0)  
 ≥10 /day 1,301 (1.9) 114 (2.4)  
Alcohol consumption
 Non-drinker 56,425 (83.8) 4,044 (83.0) 0.002
 Drinker 6,552 (9.7) 464 (9.3)  
 Individuals with problem drinkingd 4,554 (6.5) 396 (7.7)  
Sleep duration
 <5 h 14,557 (21.2) 1,162 (23.4) <0.001
 5~7 h 24,350 (37.1) 1,763 (37.0)  
 7 h< 22,013 (31.5) 1,471 (28.9)  
 Missinge 6,611 (10.2) 508 (10.7)  
Sleep satisfaction
 Well enough 17,356 (25.6) 1,189 (24.2) <0.001
 Enough 21,791 (32.4) 1,442 (29.5)  
 Not enough 28,384 (42.0) 2,273 (46.3)  
Violence
 Never experienced 65,307 (96.7) 4,688 (95.8) <0.001
 Experienced ≥ 1 time 2,224 (3.3) 216 (4.2)  
  1. a Urban area: small, medium, or big city
  2. b Family Affluence Score = number of cars + holidays + personal computers + bedrooms. 0–2: Low, 3–5: Middle, >6: High
  3. c An activity such as jogging, playing sports over 20 min causing rapid breathing and a substantial increase in heart rate
  4. d Those who experienced problem drinking during the last 12 months
  5. e Those who did not answer