Table 1. Baseline characteristics according to atopic dermatitis in Korean adults.
| Variable | Normal (n=14,598) | AD (n=302) | p-value |
|---|---|---|---|
| Age (yr) | <0.001* | ||
| 19~29 | 1,433 (17.81) | 116 (55.85) | |
| 30~39 | 2,508 (20.27) | 56 (15.8) | |
| 40~49 | 2,551 (22.26) | 32 (10.6) | |
| 50~59 | 2,878 (18.91) | 41 (10.83) | |
| 60~69 | 2,683 (11.09) | 34 (4.41) | |
| ≥70 | 2,545 (9.65) | 23 (2.52) | |
| Sex | 0.428 | ||
| Male | 5,842 (49.04) | 114 (51.85) | |
| Female | 8,756 (50.96) | 188 (48.15) | |
| House income | 0.597 | ||
| Quartile 1 | 2,020 (13.51) | 28 (10.81) | |
| Quartile 2 | 3,062 (27.05) | 66 (26.71) | |
| Quartile 3 | 3,421 (30.53) | 85 (32.47) | |
| Quartile 4 | 3,443 (28.90) | 86 (30.02) | |
| Education level | <0.001* | ||
| ≤Elementary school | 2,695 (15.06) | 25 (5.10) | |
| Middle school graduate | 1,269 (9.32) | 15 (4.95) | |
| High school graduate | 4,176 (40.76) | 123 (54.78) | |
| ≥College graduate | 3,910 (34.86) | 108 (35.18) | |
| Occupation | <0.001* | ||
| White collar | 4,479 (36.9) | 119 (43.26) | |
| Blue collar | 3,863 (27.29) | 45 (13.2) | |
| Unemployed | 6,205 (35.81) | 137 (43.54) | |
| Region | 0.068 | ||
| Rural | 4,908 (29.8) | 75 (23.79) | |
| Urban | 9,690 (70.2) | 227 (76.21) | |
| Smoking status | 0.714 | ||
| Nonsmoker | 8,923 (54.37) | 185 (57.34) | |
| Ex-smoker | 2,998 (20.72) | 60 (19.09) | |
| Smoker | 2,644 (24.91) | 57 (23.58) | |
| Alcohol-drinking | 0.033* | ||
| None | 4,390 (23.71) | 72 (18.01) | |
| Occasional (<2/wk) | 7,289 (53.74) | 179 (62.78) | |
| Frequent (≥2/wk) | 2,833 (22.56) | 48 (19.21) | |
| Overweight (BMI ≥25 kg/m2) | 4,612 (32.05) | 84 (29.46) | 0.457 |
| Diagnosis of HTN | 1,469 (24.26) | 16 (10.18) | <0.001* |
| Diagnosis of DM | 1,451 (8.49) | 19 (4.05) | <0.001* |
| Diagnosis of hypercholesterolemia | 1,227 (7.26) | 20 (3.61) | 0.011* |
| Family history of ocular disease | 2,920 (20.87) | 70 (20.75) | 0.965 |
Data are presented as numbers (weighted percentage). Numbers may not sum to 14,900 because of missing values in the database. AD: atopic dermatitis, BMI: body mass index, HTN: hypertension, DM: diabetes mellitus. p-values were calculated using the Rao–Scott chi-square test, and those in asterisks (*) are statistically significant.