Table 1.
Baseline Characteristics of Women With Persistent Asthma in the Nurses’ Health Study, According to ICS Status (1998)*
| Characteristics | Receiving ICSs (n = 1,448) | Not Receiving ICSs (n = 1,223) |
|---|---|---|
| Age, yr | 62 ± 7 | 63 ± 7 |
| Asthma severity | ||
| Mild persistent | 47 | 52 |
| Moderate persistent | 42 | 44 |
| Severe persistent | 12 | 4 |
| Smoking | ||
| Never | 48 | 49 |
| Past | 48 | 43 |
| Current | 3 | 8 |
| History,† pack-yr | 18 ± 18 | 22 ± 22 |
| History of heart disease | 3 | 3 |
| History of cancer | 14 | 13 |
| History of stroke | 2 | 2 |
| Aspirin frequency | ||
| < 3 d/mo | 64 | 57 |
| 1–4 d/wk | 9 | 11 |
| > 5 d/wk | 19 | 23 |
| Missing | 8 | 9 |
| Statin use | 13 | 15 |
*
Values are given as the mean ± SD or %.
†
Among current and past smokers only.