From: A survey of severe asthma in Canada: results from the CASCADE practice reflective program
Patient sex, % | |
 Female | 60% |
 Male | 39% |
 Other | 1% |
Patient age | |
 Median, years | 55 |
 Range, years | 12–93 |
Age at diagnosis | |
 Median, years | 35 |
 Range, years | 1–84 |
Time since severe asthma diagnosis, % | |
 0–1 years | 8% |
 2–5 years | 24% |
 6–10 years | 18% |
 11–20 years | 17% |
 21 or more years | 32% |