Study group 1991 | Subjects with complete data in 1991 | Responders in 1999# | |
Total | 2633 | 1513 (57% of total) | 1794 (70% of survivors) |
Females | 1321 (50.2) | 773 (51.1) | 911 (50.8) |
Age yrs | |||
18–35 | 740 (28.1) | 317 (21.0) | 403 (22.5) |
36–50 | 979 (37.2) | 587 (38.8) | 704 (39.2) |
51–70 | 914 (34.7) | 609 (40.3) | 687 (38.3) |
Smoking | |||
Lifetime nonsmoker | 1306 (49.6) | 785 (51.9) | 939 (52.3) |
Current smoker | 597 (22.7) | 283 (18.7) | 343 (19.1) |
Asthma | |||
Self-reported doctor-diagnosed asthma | 236 (9.0) | 122 (8.1) | 144 (8.0) |
Symptomatic asthma* | 211 (8.0) | 106 (7.0) | 127 (7.1) |
Data are presented as N (column %)
*: self-reported doctor-diagnosed asthma with current asthma-like symptoms
#: subjects died since 1991