| Asthma onset > 12 years, n (%) |  | |
---|---|---|---|
 | No | Yes | P |
(n = 253) | (n = 450) | ||
Age, years | 38.8 ± 5.1 | 38.3 ± 4.8 | 0.2 |
Sex | Â | Â | 0.1 |
 Male | 100 (39.5) | 152 (33.8) |  |
 Female | 153 (60.5) | 298 (66.2) |  |
BMI | 23.8 ± 3.8 | 23.8 ± 4.0 | 0.9 |
Education | Â | Â | Â |
 Middle school or less | 62 (24.5) | 117 (26.0) | 0.3 |
 High school | 119 (47.0) | 228 (50.7) |  |
 College or beyond | 72 (28.5) | 105 (23.3) |  |
Family income | Â | Â | 0.02 |
  < 13,300 USD | 75 (29.6) | 180 (40.0) |  |
 13,300–33,000 USD | 147 (58.1) | 228 (50.7) |  |
  > 33,000 USD | 31 (12.3) | 42 (9.3) |  |
Current smoking | 62 (25.6) | 96 (21.9) | 0.3 |