Demographic and smoking variables among 189 adults with asthma
| Demographic and smoking variables | Frequency |
|---|---|
| Age in years, mean (SD) | 46 (8.8) |
| Female sex, n (%) | 131 (69) |
| Education | |
| High school or less, n (%) | 32 (17) |
| Some college, n (%) | 64 (34) |
| College graduate, n (%) | 93 (49) |
| Annual family income | |
| <$20 000, n (%) | 19 (10) |
| $20 000–40 000, n (%) | 37 (20) |
| $40 000–80 000, n (%) | 53 (28) |
| ⩾$80 000, n (%) | 80 (42) |
| White, non-Hispanic, n (%) | 134 (71) |
| Smoking status | |
| Never, n (%) | 124 (66) |
| Ex smoker, n (%) | 55 (29) |
| Current smoker, n (%) | 10 (5) |