Table 1.
Association of gender and birthplace outside the US with adult onset atopic dermatitis.
| Variable | Age of AD onset$ | ||
|---|---|---|---|
| Childhood (<18) (n=207) | Adulthood (≥18) (n=149) | ||
| Freq (%) | Freq (%) | P# | |
| Sex | |||
| Male | 70 (33.8%) | 56 (37.6%) | 0.46 |
| Female | 137 (66.2%) | 93 (62.4%) | |
| Race/ethnicity | |||
| White, non-Hispanic | 127 (61.4%) | 101 (67.8%) | 0.72* |
| Black | 30 (14.5%) | 15 (10.1%) | |
| Hispanic | 13 (6.3%) | 9 (6.0%) | |
| Asian | 34 (16.4%) | 22 (14.8%) | |
| Multiracial/Other | 3 (1.4%) | 2 (1.3%) | |
| Current cigarette smoker | |||
| No | 169 (88.0%) | 126 (91.3%) | 0.62 |
| Yes | 23 (12.0%) | 12 (8.7%) | |
| Current alcohol consumption | |||
| No | 67 (35.3%) | 37 (27.0%) | 0.11 |
| Yes | 123 (64.7%) | 100 (73.0%) | |
| Birthplace in US | |||
| Yes | 170 (88.5%) | 107 (77.5%) | 0.008 |
| No | 22 (11.5%) | 31 (22.5%) | |
| Continent of birth (outside US) | |||
| North America | 3 (13.6%) | 0 (0.0%) | 0.057* |
| South America | 1 (4.6%) | 7 (22.6%) | |
| Europe | 7 (31.8%) | 8 (25.8%) | |
| Asia | 10 (45.5%) | 16 (51.6%) | |
| Africa | 1 (4.6%) | 0 (0.0%) | |
| Timing of migration | |||
| AD preceded migration | 20 (90.9%) | 9 (29.0%) | <0.0001* |
| AD developed after migration | 2 (9.1%) | 22 (71.0%) | |
#
Chi-square test was used for all tests unless where indicated.
*
Fisher-exact test
$
Column percentages are presented. Some frequencies may not sum to the total number of childhood and adult-onset cases due to missing values.