Personal characteristics of work aggravated and new onset asthma cases
| Characteristic | Categories | WAA (n = 210) | NOA (n = 891) |
|---|---|---|---|
| *p<0.01, by t test. | |||
| †p<0.01, by χ2 test. | |||
| Source of case reports | Physician reports | 91% | 90% |
| Hospital discharge data | 8.5% | 8% | |
| Other | 0.5% | 2% | |
| Total | 100% | 100% | |
| Demographic features | Mean age (SEM)* | 38.0 (0.68) | 42.0 (0.35) |
| Female, %† | 69% | 53% | |
| Non-white, %† | 31% | 21% | |
| Ever smoke cigarettes, %† | 39% | 53% | |
| History of allergies | Ever told had allergies† | 75% | 42% |
| Family history of allergies or asthma† | 57% | 35% | |